Merge pull request #2 from yoksnod/marker-interface-improvements

Added jitpack integration

.github/FUNDING.yml

@@ -0,0 +1,12 @@
+# These are supported funding model platforms
+
+github: # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
+patreon: mpandroidchart
+open_collective: philippjahoda
+ko_fi: # Replace with a single Ko-fi username
+tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
+community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
+liberapay: # Replace with a single Liberapay username
+issuehunt: # Replace with a single IssueHunt username
+otechie: # Replace with a single Otechie username
+custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,37 @@
+<!---
+BEFORE YOU SUBMIT please read the following:
+
+Please search open/closed issues before submitting since someone might have asked
+the same thing before!
+
+If you have a support request or question please submit them on StackOverflow:
+  https://stackoverflow.com/questions/tagged/mpandroidchart
+using the tags `android` & `mpandroidchart`
+
+Please also look at the CONTRIBUTING file before opening an issue:
+  https://github.com/PhilJay/MPAndroidChart/blob/master/CONTRIBUTING.md
+
+Issues on GitHub are only related to problems with MPAndroidChart itself and we
+cannot answer support questions here. We will close your issue without a response.
+-->
+
+**Summary**
+<!-- A clear and concise description of what the bug is. -->
+
+**Expected Behavior**
+<!-- A clear and concise description of what you expected to happen. -->
+
+**Possible Solution**
+<!-- Not required, but suggest a fix/ reason for the bug, -->
+<!-- or ideas how to implement the addition or change -->
+
+**Device (please complete the following information):**
+ - Device: [e.g. Google Pixel]
+ - Android Version [e.g. 7.0]
+ - Library Version (e.g. 3.1.0-alpha)
+
+**Additional Context**
+<!-- Add any other context about the problem here.
+If you have source code demonstrating this bug, create a Gist:
+  https://help.github.com/articles/creating-gists/
+and link to it here. -->

.github/ISSUE_TEMPLATE/Bug_report.md

@@ -0,0 +1,44 @@
+---
+name: Bugs
+about: Create a bug report to help us improve
+
+---
+
+<!---
+BEFORE YOU SUBMIT please read the following:
+
+Please search open/closed issues before submitting since someone might have asked the same thing before!
+
+If you have a support request or question please submit them on StackOverflow:
+  https://stackoverflow.com/questions/tagged/mpandroidchart
+using the tags `android` & `mpandroidchart`
+
+Please also look at the CONTRIBUTING file before opening an issue:
+  https://github.com/PhilJay/MPAndroidChart/blob/master/CONTRIBUTING.md
+
+Issues on GitHub are only related to problems with MPAndroidChart itself and we cannot answer
+support questions here. We will close your issue without a response.
+-->
+
+**Summary**
+<!-- A clear and concise description of what the bug is. -->
+
+**Expected Behavior**
+<!-- A clear and concise description of what you expected to happen. -->
+
+**Possible Solution**
+<!-- Not required, but suggest a fix/ reason for the bug, -->
+<!-- or ideas how to implement the addition or change -->
+
+**Device (please complete the following information):**
+ - Device: [e.g. Google Pixel]
+ - Android Version [e.g. 7.0]
+ - Library Version (e.g. 3.1.0-alpha)
+
+**Additional Context**
+<!-- Add any other context about the problem here.
+If you have source code demonstrating this bug, create a Gist:
+  https://help.github.com/articles/creating-gists/
+and link to it here. -->
+
+ADD A REWARD using [Speed](speedoss.com) to SOLVE this issue QUICKLY and SUPPORT this project.

.github/ISSUE_TEMPLATE/Feature_request.md

@@ -0,0 +1,34 @@
+---
+name: Feature Request
+about: Suggest an idea for this project
+
+---
+
+<!---
+BEFORE YOU SUBMIT please read the following:
+
+Please search open/closed issues before submitting since someone might have asked the same thing before!
+
+If you have a support request or question please submit them on StackOverflow:
+  https://stackoverflow.com/questions/tagged/mpandroidchart
+using the tags `android` & `mpandroidchart`
+
+Please also look at the CONTRIBUTING file before opening an issue:
+  https://github.com/PhilJay/MPAndroidChart/blob/master/CONTRIBUTING.md
+
+Issues on GitHub are only related to problems with MPAndroidChart itself and we cannot answer
+support questions here. We will close your issue without a response.
+-->
+
+**Is your feature request related to a problem? Please describe.**
+<!-- A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] -->
+
+**Describe the solution you'd like**
+<!-- A clear and concise description of what you want to happen. -->
+
+**Describe alternatives you've considered**
+<!-- A clear and concise description of any alternative solutions or features you've considered. -->
+
+**Additional context**
+<!-- Add any other context or screenshots about the feature request here. -->
+ADD A REWARD using [Speed](speedoss.com) to SOLVE this issue QUICKLY and SUPPORT this project.

.github/ISSUE_TEMPLATE/Support_help.md

@@ -0,0 +1,27 @@
+---
+name: Support
+about: I need help!
+
+---
+
+# *STOP RIGHT THERE!*
+
+Issues are ***NOT*** for getting help, only for reporting bugs and feature requests.
+
+Search open and closed issues to see if your question already has an answer. However, **do not create a new issue.**
+
+Instead, do the following:
+
+1. Download the [Example App](https://play.google.com/store/apps/details?id=com.xxmassdeveloper.mpchartexample) and check out the [source code](https://github.com/PhilJay/MPAndroidChart/tree/master/MPChartExample/src/com/xxmassdeveloper/mpchartexample). 90% of the time there is an example that does exactly what you are trying to do.
+
+1. Look at the [Wiki](https://github.com/PhilJay/MPAndroidChart/wiki) for the official documentation for MPAndroidChart. You can also browse the [javadoc](https://jitpack.io/com/github/philjay/mpandroidchart/v3.1.0-alpha/javadoc/) for a more detailed tutorial of the API.
+
+1. Go to [StackOverflow](https://stackoverflow.com/questions/tagged/mpandroidchart) and ask your questions there. The community will be much more helpful and willing to offer guidance.
+
+
+### You have been warned!
+
+From now on, any issues asking for help will get closed with a link to this file.
+
+### Additional Context
+ADD A REWARD using [Speed](speedoss.com) to SOLVE this issue QUICKLY and SUPPORT this project.

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,15 @@
+## PR Checklist:
+- [ ] I have tested this extensively and it does not break any existing behavior.
+- [ ] I have added/updated examples and tests for any new behavior.
+- [ ] If this is a significant change, an issue has already been created where the problem / solution was discussed: [N/A, or add link to issue here]
+       <!-- If you'd like to suggest a significant change, please
+            create an issue to discuss those changes and gather
+            feedback BEFORE submitting your PR. -->
+
+
+## PR Description
+<!-- Describe Your PR Here! -->
+
+<!-- What does this add/ remove/ fix/ change? -->
+
+<!-- WHY should this PR be merged into the main library? -->

.gitignore

@@ -12,8 +12,8 @@
 bin/
 gen/
 generated/
-docs/
 finalOutput/
+projectFilesBackup/
 
 build.xml
 
@@ -23,6 +23,8 @@ local.properties
 # Eclipse project files
 .classpath
 .project
+.settings/
+.vscode/
 
 # Proguard folder generated by Eclipse
 proguard/
@@ -31,7 +33,8 @@ proguard/
 *.iml
 *.ipr
 *.iws
-.idea/
+/.idea/*
+!/.idea/runConfigurations
 
 .directory
 

.idea/runConfigurations/MPChartExample.xml

@@ -0,0 +1,52 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="MPChartExample" type="AndroidRunConfigurationType" factoryName="Android App" activateToolWindowBeforeRun="false">
+    <module name="MPChartExample" />
+    <option name="DEPLOY" value="true" />
+    <option name="DEPLOY_APK_FROM_BUNDLE" value="false" />
+    <option name="ARTIFACT_NAME" value="" />
+    <option name="PM_INSTALL_OPTIONS" value="" />
+    <option name="DYNAMIC_FEATURES_DISABLED_LIST" value="" />
+    <option name="ACTIVITY_EXTRA_FLAGS" value="" />
+    <option name="MODE" value="default_activity" />
+    <option name="CLEAR_LOGCAT" value="false" />
+    <option name="SHOW_LOGCAT_AUTOMATICALLY" value="false" />
+    <option name="SKIP_NOOP_APK_INSTALLATIONS" value="true" />
+    <option name="FORCE_STOP_RUNNING_APP" value="true" />
+    <option name="TARGET_SELECTION_MODE" value="SHOW_DIALOG" />
+    <option name="USE_LAST_SELECTED_DEVICE" value="false" />
+    <option name="PREFERRED_AVD" value="" />
+    <option name="SELECTED_CLOUD_MATRIX_CONFIGURATION_ID" value="-1" />
+    <option name="SELECTED_CLOUD_MATRIX_PROJECT_ID" value="" />
+    <option name="DEBUGGER_TYPE" value="Auto" />
+    <Auto>
+      <option name="USE_JAVA_AWARE_DEBUGGER" value="false" />
+      <option name="SHOW_STATIC_VARS" value="true" />
+      <option name="WORKING_DIR" value="" />
+      <option name="TARGET_LOGGING_CHANNELS" value="lldb process:gdb-remote packets" />
+      <option name="SHOW_OPTIMIZED_WARNING" value="true" />
+    </Auto>
+    <Hybrid>
+      <option name="USE_JAVA_AWARE_DEBUGGER" value="false" />
+      <option name="SHOW_STATIC_VARS" value="true" />
+      <option name="WORKING_DIR" value="" />
+      <option name="TARGET_LOGGING_CHANNELS" value="lldb process:gdb-remote packets" />
+      <option name="SHOW_OPTIMIZED_WARNING" value="true" />
+    </Hybrid>
+    <Java />
+    <Native>
+      <option name="USE_JAVA_AWARE_DEBUGGER" value="false" />
+      <option name="SHOW_STATIC_VARS" value="true" />
+      <option name="WORKING_DIR" value="" />
+      <option name="TARGET_LOGGING_CHANNELS" value="lldb process:gdb-remote packets" />
+      <option name="SHOW_OPTIMIZED_WARNING" value="true" />
+    </Native>
+    <Profilers>
+      <option name="ADVANCED_PROFILING_ENABLED" value="false" />
+      <option name="STARTUP_CPU_PROFILING_ENABLED" value="false" />
+      <option name="STARTUP_CPU_PROFILING_CONFIGURATION_NAME" value="Sampled (Java)" />
+    </Profilers>
+    <option name="DEEP_LINK" value="" />
+    <option name="ACTIVITY_CLASS" value="" />
+    <method />
+  </configuration>
+</component>

.settings/gradle/org.springsource.ide.eclipse.gradle.core.prefs

@@ -1,4 +0,0 @@
-#org.springsource.ide.eclipse.gradle.core.preferences.GradleProjectPreferences
-#Mon Jan 18 23:02:46 CET 2016
-build.family.org.gradle.tooling.model.eclipse.HierarchicalEclipseProject=;MPChartExample;MPChartLib;
-org.springsource.ide.eclipse.gradle.rootprojectloc=

CONTRIBUTING.md

@@ -1,49 +1,66 @@
+> ### Notice
+> *Before you continue, this is the* **ANDROID** *library. If you have an* **iOS** *device, please go here instead*:
+> 
+> – https://github.com/danielgindi/Charts
+> 
+> They might tell you to come back here, if they do, listen to them and ignore this notice.
+
 # How to contribute
 
-Bug-fixes and features often come from users of the MPAndroidChart library and improve it greatly. We want to keep it as easy as possible to contribute changes that improve the experience for users all around the world. There are a few guidelines that we
-need contributors to follow so that we can have a chance of keeping on
-top of things.
+Bug-fixes and features often come from users of the MPAndroidChart library and improve it greatly. We want to keep it as easy as possible to contribute changes that improve the experience for users all around the world. There are a few guidelines that we need contributors to follow so that we can have a chance of keeping on top of things.
 
-## Simple issues and bug reports
+## Creating Issues
 
-If you are reporting a bug which can be observed visually, please add to your issue either:
+There are two main issue templates, one for bugs and another for feature requests. Please use them! You're issue will be much easier to understand, and bugs easier to fix, if you follow the templates. If your issue doesn't fit into those, just use the generic template.
 
-* Screenshots, if the bug is easily explainable
-* A working sample project that we can compile, run, and immediately observe the issue
+Search existing [issues] to see if your bug has already been reported or if a feature request already exists. Don't forget to remove `is:open` so you see all the issues! If you find that one already exists, use reactions to show how much you care!
 
-## Getting Started with Contributions
+## Making Pull Requests
 
-* Make sure you have a [GitHub account](https://github.com/signup/free)
-* Submit a ticket for your issue, assuming one does not already exist.
-  * Clearly describe the issue including steps to reproduce when it is a bug.
-  * Make sure you fill in the earliest version (or commit number) that you know has the issue.
-* Fork the repository on GitHub
+Careful! If you fail to follow these guidlines, you're pull request may be closed, *even if it's really awesome*. 
 
-## Making Changes
+  0. **Search** open [pull requests] AND existing [issues] to make sure what you want to do isn't already being worked on or already has an open pull request.
+  1. **Fork** the repository
+  1. **Create** a new branch based on `master`, and name it according to your changes
+  1. **Add** your commits, they MUST follow the [Commit Style](#commit-style) below
+  1. **Test** your changes by actually running the example app, or create a new example
+  1. **Create** a pull request, following the auto-generated template
+  1. ???
+  1. Profit :money_with_wings:
+  
+You are encouraged to use [GitHub Desktop] to inspect your code changes before committing them. It can reveal small changes that might have gone unnoticed, and would be requested for removal before merging.
 
-* Create a topic branch from where you want to base your work. This is usually the master branch.
-* Make commits of logical units.
-* Make sure your code conforms to the code style around it. It's easy, just look around!
-* If you have made changes back and forth, or have made merges, your commit history might look messy and hard to understand. A single issue or change should still be in one commit. So please squash those commits together and rebase them however you need to - to make our lives easier when reading it later.
-* Check for unnecessary whitespace with `git diff --check` before committing.
-* Make sure your commit messages are in the proper format.
+Check out [#3975](https://github.com/PhilJay/MPAndroidChart/pull/3975) for an example of a good-made-better pull request.
 
-````
-    First line must be up to 50 chars (Fixes #1234)
+## Commit Style
 
-    The first line should be a short statement as to what have changed, and should also include an issue number, prefixed with a dash.
-    The body of the message comes after an empty new line, and describes the changes
-    more thoroughly, especially if there was a special case handled there,
-    or maybe some trickery that only code wizards can understand.
-````
+  * **Make commits of logical units**  
+  Don't load your commits with tons of changes, this makes it hard to follow what is happening. However, if you have done a lot of work, and there are commits and merges all over the place, squash them down into fewer commits.
+  
+  * **Conform to the code style**  
+  It's easy, just look around!
+  
+  * **Write good commit messages**  
+  You may prefer [Tim Pope's style], you might like the [commitizen-friendly] way. Regardless of the color you pick, you MUST stay within the lines!  
+  ```
+The commit title CANNOT exceed 50 characters
 
-* Make sure you have tested your changes well.
-* If your changes could theoretically affect some other component or case, which you do not necessarily use, you still have to test it.
-* Create a Pull Request from your topic branch to the relevant branch in the main repo. If you go to the main repo of the framework, you'll see a big green button which pretty much prepares the PR for you. You just have to hit it.
+The body of the message comes after an empty new line, and describes the
+changes more thoroughly. If the change is obvious and self-explanatory
+from the title, you can omit the body. You should describe all changes
+if many were made, or maybe some trickery that only code wizards can
+understand.
 
-## Making Trivial Changes
+Be polite and wrap your lines to 72 characters, but if you prefer going
+to 100 characters then I guess we can't stop you.
+```
 
-For changes of a trivial nature to comments and documentation, it is not
-always necessary to create a new ticket. In this case, it is
-appropriate to start the first line of a commit with '(doc)' instead of
-a ticket number. Even the default commit message the GitHub generates is fine with us.
+## Final Notes
+
+Thanks for reading the contributing file! Have some cake! :cake:
+
+[issues]: https://github.com/PhilJay/MPAndroidChart/issues
+[pull requests]: https://github.com/PhilJay/MPAndroidChart/pulls
+[GitHub Desktop]: https://desktop.github.com/
+[Tim Pope's style]: https://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html
+[commitizen-friendly]: https://github.com/commitizen/cz-cli

LICENSE

@@ -0,0 +1,201 @@
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+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

MPChartExample/.gitignore

@@ -1 +1,2 @@
 /build
+/release

MPChartExample/.settings/gradle/org.springsource.ide.eclipse.gradle.core.prefs

@@ -1,3 +0,0 @@
-#org.springsource.ide.eclipse.gradle.core.preferences.GradleProjectPreferences
-#Mon Jan 18 23:02:46 CET 2016
-org.springsource.ide.eclipse.gradle.rootprojectloc=..

MPChartExample/AndroidManifest.xml

@@ -1,71 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.xxmassdeveloper.mpchartexample"
-    android:versionCode="55"
-    android:versionName="3.0.2" >
-
-    <uses-sdk
-        android:minSdkVersion="16"
-        android:targetSdkVersion="25" />
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
-
-    <application
-        android:allowBackup="true"
-        android:hardwareAccelerated="true"
-        android:icon="@drawable/ic_launcher" 
-        android:label="@string/app_name"
-        android:theme="@style/AppTheme" >
-        <activity
-            android:name="com.xxmassdeveloper.mpchartexample.notimportant.MainActivity"
-            android:label="@string/app_name" >
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN" />
-
-                <category android:name="android.intent.category.LAUNCHER" />
-            </intent-filter>
-        </activity>
-        <activity android:name="LineChartActivity1"></activity> <!--  android:configChanges="keyboardHidden|orientation|screenSize"  -->
-        <activity android:name="LineChartActivity2"></activity>
-        <activity android:name=".LineChartTime"></activity>
-        <activity android:name="BarChartActivity"></activity>
-		<activity android:name="HorizontalBarChartActivity"></activity>
-        <activity android:name="PieChartActivity"></activity>
-        <activity android:name="PiePolylineChartActivity"></activity>
-        <activity android:name="MultiLineChartActivity"></activity>
-        <activity android:name="BarChartActivityMultiDataset"></activity>
-        <activity android:name="DrawChartActivity"></activity>
-        <activity android:name="ScatterChartActivity"></activity>
-        <activity android:name="BubbleChartActivity"></activity>
-        <activity android:name="com.xxmassdeveloper.mpchartexample.fragments.SimpleChartDemo"></activity>
-        <activity android:name="ListViewBarChartActivity"></activity>
-        <activity android:name="ListViewMultiChartActivity"></activity>
-        <activity android:name="StackedBarActivity"></activity>
-        <activity android:name="AnotherBarActivity"></activity>
-        <activity android:name="InvertedLineChartActivity"></activity>
-        <activity android:name="CandleStickChartActivity"></activity>
-        <activity android:name="CubicLineChartActivity"></activity>
-        <activity android:name="RadarChartActivitry"></activity>
-        <activity android:name="LineChartActivityColored"></activity>
-        <activity android:name="DynamicalAddingActivity"></activity>
-        <activity android:name=".realm.RealmDatabaseActivityLine"></activity>
-        <activity android:name=".realm.RealmDatabaseActivityBar"></activity>
-        <activity android:name=".realm.RealmDatabaseActivityHorizontalBar"></activity>
-        <activity android:name=".realm.RealmDatabaseActivityScatter"></activity>
-        <activity android:name=".realm.RealmDatabaseActivityCandle"></activity>
-        <activity android:name=".realm.RealmDatabaseActivityBubble"></activity>
-        <activity android:name=".realm.RealmDatabaseActivityPie"></activity>
-        <activity android:name=".realm.RealmDatabaseActivityRadar"></activity>
-        <activity android:name=".realm.RealmMainActivity"></activity>
-        <activity android:name="RealtimeLineChartActivity"></activity>
-        <activity android:name="CombinedChartActivity"></activity>
-        <activity android:name="PerformanceLineChart"></activity>
-        <activity android:name="BarChartActivitySinus"></activity>
-        <activity android:name="ScrollViewActivity"></activity>
-        <activity android:name="StackedBarActivityNegative"></activity>
-        <activity android:name=".realm.RealmWikiExample"></activity>
-        <activity android:name=".BarChartPositiveNegative"></activity>
-        <activity android:name=".FilledLineActivity"></activity>
-        <activity android:name=".HalfPieChartActivity"></activity>
-    </application>
-
-</manifest>

MPChartExample/build.gradle

@@ -1,65 +1,26 @@
 apply plugin: 'com.android.application'
-apply plugin: 'realm-android'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion '25.0.0'
+    compileSdkVersion 28
     defaultConfig {
+        applicationId "com.xxmassdeveloper.mpchartexample"
         minSdkVersion 16
-        targetSdkVersion 25
-        versionCode 55
-        versionName '3.0.2'
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
-
-        sourceSets {
-            main {
-                java.srcDirs = ['src']
-                res.srcDirs = ['res']
-                assets.srcDirs = ['assets']
-                manifest.srcFile 'AndroidManifest.xml'
-            }
-        }
+        targetSdkVersion 28
+        versionCode 57
+        versionName '3.1.0'
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
 
     buildTypes {
-
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }
-
-    lintOptions {
-        abortOnError false
-    }
-}
-
-buildscript {
-    repositories {
-        jcenter()
-    }
-    dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.0'
-        //classpath 'io.realm:realm-gradle-plugin:0.88.2'
-        // NOTE: Do not place your application dependencies here; they belong
-        // in the individual module build.gradle files
-    }
-}
-
-repositories {
-    maven { url "https://jitpack.io" }
-    maven { // this is for realm-db
-        url 'http://oss.jfrog.org/artifactory/oss-snapshot-local'
-    }
 }
 
 dependencies {
-    //compile fileTree(dir: 'libs', include: ['*.jar'])
-    //compile project(':MPChartLib-Realm') // clone "https://github.com/PhilJay/MPAndroidChart-Realm" to get this or uncomment the gradle dependency below:
-    compile 'com.github.PhilJay:MPAndroidChart-Realm:v2.0.2@aar'
-
-    compile project(':MPChartLib')
-    compile 'com.android.support:appcompat-v7:24.2.1'
-    //compile 'io.realm:realm-android:0.87.5' // dependency for realm-database API (http://realm.io)
-    //compile 'com.github.PhilJay:MPAndroidChart:v2.2.5'
+    implementation "androidx.appcompat:appcompat:1.0.2"
+    implementation 'com.google.android.material:material:1.0.0'
+    implementation project(':MPChartLib')
 }

MPChartExample/proguard-project.txt

@@ -1,20 +0,0 @@
-# To enable ProGuard in your project, edit project.properties
-# to define the proguard.config property as described in that file.
-#
-# Add project specific ProGuard rules here.
-# By default, the flags in this file are appended to flags specified
-# in ${sdk.dir}/tools/proguard/proguard-android.txt
-# You can edit the include path and order by changing the ProGuard
-# include property in project.properties.
-#
-# For more details, see
-#   http://developer.android.com/guide/developing/tools/proguard.html
-
-# Add any project specific keep options here:
-
-# If your project uses WebView with JS, uncomment the following
-# and specify the fully qualified class name to the JavaScript interface
-# class:
-#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
-#   public *;
-#}

MPChartExample/proguard-rules.pro

@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

MPChartExample/project.properties

@@ -1,15 +0,0 @@
-# This file is automatically generated by Android Tools.
-# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
-#
-# This file must be checked in Version Control Systems.
-#
-# To customize properties used by the Ant build system edit
-# "ant.properties", and override values to adapt the script to your
-# project structure.
-#
-# To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir, user.home):
-#proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
-
-# Project target.
-target=android-23
-android.library.reference.1=../MPChartLib

MPChartExample/res/drawable/new_background.xml

@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<shape xmlns:android="http://schemas.android.com/apk/res/android">
-    <stroke
-        android:width="2dp"
-        android:color="#FA6185" />
-
-    <solid android:color="#FA6185" />
-    <corners android:radius="5dp" />
-</shape>

MPChartExample/res/layout/activity_bubblechart_noseekbar.xml

@@ -1,11 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent" >
-
-    <com.github.mikephil.charting.charts.BubbleChart
-        android:id="@+id/chart1"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent" />
-
-</RelativeLayout>

MPChartExample/res/layout/activity_candlechart_noseekbar.xml

@@ -1,11 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent" >
-
-    <com.github.mikephil.charting.charts.CandleStickChart
-        android:id="@+id/chart1"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent" />
-
-</RelativeLayout>

MPChartExample/res/layout/activity_horizontalbarchart_noseekbar.xml

@@ -1,11 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent" >
-
-    <com.github.mikephil.charting.charts.HorizontalBarChart
-        android:id="@+id/chart1"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent" />
-
-</RelativeLayout>

MPChartExample/res/layout/activity_piechart_noseekbar.xml

@@ -1,11 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent" >
-
-    <com.github.mikephil.charting.charts.PieChart
-        android:id="@+id/chart1"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent" />
-
-</RelativeLayout>

MPChartExample/res/layout/activity_radarchart_noseekbar.xml

@@ -1,22 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:orientation="vertical">
-
-    <TextView
-        android:layout_width="match_parent"
-        android:layout_height="0dp"
-        android:layout_weight="0.6"
-        android:gravity="center"
-        android:textAppearance="?android:attr/textAppearanceLarge"
-        android:text="YOUR PREFERENCES"
-        android:id="@+id/textView"/>
-
-    <com.github.mikephil.charting.charts.RadarChart
-        android:id="@+id/chart1"
-        android:layout_width="match_parent"
-        android:layout_height="0dp"
-        android:layout_weight="2" />
-
-</LinearLayout>

MPChartExample/res/layout/activity_realm_wiki.xml

@@ -1,20 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:background="@android:color/white"
-    android:orientation="vertical">
-
-    <com.github.mikephil.charting.charts.LineChart
-        android:id="@+id/lineChart"
-        android:layout_width="match_parent"
-        android:layout_height="0dp"
-        android:layout_weight="1" />
-
-    <com.github.mikephil.charting.charts.BarChart
-        android:id="@+id/barChart"
-        android:layout_width="match_parent"
-        android:layout_height="0dp"
-        android:layout_weight="1" />
-
-</LinearLayout>

MPChartExample/res/layout/activity_scatterchart_noseekbar.xml

@@ -1,11 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent" >
-
-    <com.github.mikephil.charting.charts.ScatterChart
-        android:id="@+id/chart1"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent" />
-
-</RelativeLayout>

MPChartExample/res/menu/candle.xml

@@ -1,41 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<menu xmlns:android="http://schemas.android.com/apk/res/android" >
-
-    <item
-        android:id="@+id/actionToggleHighlight"
-        android:title="Toggle Highlight">
-    </item>
-    <item
-        android:id="@+id/animateX"
-        android:title="Animate X">
-    </item>
-    <item
-        android:id="@+id/animateY"
-        android:title="Animate Y">
-    </item>
-    <item
-        android:id="@+id/animateXY"
-        android:title="Animate XY">
-    </item>
-    <item
-        android:id="@+id/actionToggleAdjustXLegend"
-        android:title="Toggle AdjustXLegend">
-    </item>
-    <item
-        android:id="@+id/actionSave"
-        android:title="Save to SD-Card">
-    </item>
-    <item
-        android:id="@+id/actionTogglePinch"
-        android:title="Toggle PinchZoom">
-    </item>
-    <item
-        android:id="@+id/actionToggleAutoScaleMinMax"
-        android:title="Toggle auto scale min/max">
-    </item>
-    <item
-        android:id="@+id/actionToggleMakeShadowSameColorAsCandle"
-        android:title="Toggle shadow same color">
-    </item>
-
-</menu>

MPChartExample/res/menu/dynamical.xml

@@ -1,33 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<menu xmlns:android="http://schemas.android.com/apk/res/android" >
-
-    <item
-        android:id="@+id/actionAddEntry"
-        android:title="Add Entry">
-    </item>
-    
-    <item
-        android:id="@+id/actionRemoveEntry"
-        android:title="Remove Entry">
-    </item>
-    
-        <item
-        android:id="@+id/actionAddDataSet"
-        android:title="Add DataSet">
-    </item>
-    
-    <item
-        android:id="@+id/actionRemoveDataSet"
-        android:title="Remove DataSet">
-    </item>
-    
-    <item
-        android:id="@+id/actionAddEmptyLineData"
-        android:title="Add empty LineData">
-    </item>
-    
-    <item
-        android:id="@+id/actionClear"
-        android:title="Clear chart">
-    </item>
-</menu>

MPChartExample/res/menu/pie.xml

@@ -1,49 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<menu xmlns:android="http://schemas.android.com/apk/res/android" >
-
-    <item
-        android:id="@+id/actionToggleValues"
-        android:title="Toggle Y-Values">
-    </item>
-    <item
-        android:id="@+id/actionToggleIcons"
-        android:title="Toggle Icons">
-    </item>
-    <item
-        android:id="@+id/actionToggleXVals"
-        android:title="Toggle X-Values">
-    </item>
-    <item
-        android:id="@+id/actionTogglePercent"
-        android:title="Toggle Percent">
-    </item>
-    <item
-        android:id="@+id/actionToggleHole"
-        android:title="Toggle Hole">
-    </item>
-    <item
-        android:id="@+id/animateX"
-        android:title="Animate X">
-    </item>
-    <item
-        android:id="@+id/animateY"
-        android:title="Animate Y">
-    </item>
-        <item
-        android:id="@+id/animateXY"
-        android:title="Animate XY">
-    </item>
-    <item
-        android:id="@+id/actionDrawCenter"
-        android:title="Draw CenterText">
-    </item>
-    <item
-        android:id="@+id/actionSave"
-        android:title="Save to Gallery">
-    </item>
-    <item
-        android:id="@+id/actionToggleSpin"
-        android:title="Spin Animation">
-    </item>
-
-</menu>

MPChartExample/res/menu/realtime.xml

@@ -1,16 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<menu xmlns:android="http://schemas.android.com/apk/res/android" >
-
-    <item
-        android:id="@+id/actionAdd"
-        android:title="Feed new Entry">
-    </item>
-    <item
-        android:id="@+id/actionClear"
-        android:title="Clear Values">
-    </item>
-    <item
-        android:id="@+id/actionFeedMultiple"
-        android:title="Fast feed multiple">
-    </item>
-</menu>

MPChartExample/res/values-sw600dp/dimens.xml

@@ -1,8 +0,0 @@
-<resources>
-
-    <!--
-         Customize dimensions originally defined in res/values/dimens.xml (such as
-         screen margins) for sw600dp devices (e.g. 7" tablets) here.
-    -->
-
-</resources>

MPChartExample/res/values-sw720dp-land/dimens.xml

@@ -1,9 +0,0 @@
-<resources>
-
-    <!--
-         Customize dimensions originally defined in res/values/dimens.xml (such as
-         screen margins) for sw720dp devices (e.g. 10" tablets) in landscape here.
-    -->
-    <dimen name="activity_horizontal_margin">128dp</dimen>
-
-</resources>

MPChartExample/res/values-v11/styles.xml

@@ -1,11 +0,0 @@
-<resources>
-
-    <!--
-        Base application theme for API 11+. This theme completely replaces
-        AppBaseTheme from res/values/styles.xml on API 11+ devices.
-    -->
-    <style name="AppBaseTheme" parent="android:Theme.Holo.Light">
-        <!-- API 11 theme customizations can go here. -->
-    </style>
-
-</resources>

MPChartExample/res/values-v14/styles.xml

@@ -1,12 +0,0 @@
-<resources>
-
-    <!--
-        Base application theme for API 14+. This theme completely replaces
-        AppBaseTheme from BOTH res/values/styles.xml and
-        res/values-v11/styles.xml on API 14+ devices.
-    -->
-    <style name="AppBaseTheme" parent="android:Theme.Holo.Light.DarkActionBar">
-        <!-- API 14 theme customizations can go here. -->
-    </style>
-
-</resources>

MPChartExample/res/values/dimens.xml

@@ -1,7 +0,0 @@
-<resources>
-
-    <!-- Default screen margins, per the Android Design guidelines. -->
-    <dimen name="activity_horizontal_margin">16dp</dimen>
-    <dimen name="activity_vertical_margin">16dp</dimen>
-
-</resources>

MPChartExample/res/values/strings.xml

@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-
-    <string name="app_name">MPAndroidChart Example</string>
-    <string name="action_settings">Settings</string>
-    <string name="hello_world">Hello world!</string>
-
-</resources>

MPChartExample/res/values/styles.xml

@@ -1,20 +0,0 @@
-<resources>
-
-    <!--
-        Base application theme, dependent on API level. This theme is replaced
-        by AppBaseTheme from res/values-vXX/styles.xml on newer devices.
-    -->
-    <style name="AppBaseTheme" parent="android:Theme.Light">
-        <!--
-            Theme customizations available in newer API levels can go in
-            res/values-vXX/styles.xml, while customizations related to
-            backward-compatibility can go here.
-        -->
-    </style>
-
-    <!-- Application theme. -->
-    <style name="AppTheme" parent="AppBaseTheme">
-        <!-- All customizations that are NOT specific to a particular API-level can go here. -->
-    </style>
-
-</resources>

MPChartExample/src/com/xxmassdeveloper/mpchartexample/AnotherBarActivity.java

@@ -1,200 +0,0 @@
-
-package com.xxmassdeveloper.mpchartexample;
-
-import android.os.Bundle;
-import android.view.Menu;
-import android.view.MenuItem;
-import android.view.WindowManager;
-import android.widget.SeekBar;
-import android.widget.SeekBar.OnSeekBarChangeListener;
-import android.widget.TextView;
-import android.widget.Toast;
-
-import com.github.mikephil.charting.charts.BarChart;
-import com.github.mikephil.charting.components.XAxis;
-import com.github.mikephil.charting.components.XAxis.XAxisPosition;
-import com.github.mikephil.charting.data.BarData;
-import com.github.mikephil.charting.data.BarDataSet;
-import com.github.mikephil.charting.data.BarEntry;
-import com.github.mikephil.charting.interfaces.datasets.IBarDataSet;
-import com.github.mikephil.charting.interfaces.datasets.IDataSet;
-import com.github.mikephil.charting.utils.ColorTemplate;
-import com.xxmassdeveloper.mpchartexample.notimportant.DemoBase;
-
-import java.util.ArrayList;
-
-public class AnotherBarActivity extends DemoBase implements OnSeekBarChangeListener {
-
-    private BarChart mChart;
-    private SeekBar mSeekBarX, mSeekBarY;
-    private TextView tvX, tvY;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
-                WindowManager.LayoutParams.FLAG_FULLSCREEN);
-        setContentView(R.layout.activity_barchart);
-
-        tvX = (TextView) findViewById(R.id.tvXMax);
-        tvY = (TextView) findViewById(R.id.tvYMax);
-
-        mSeekBarX = (SeekBar) findViewById(R.id.seekBar1);
-        mSeekBarX.setOnSeekBarChangeListener(this);
-
-        mSeekBarY = (SeekBar) findViewById(R.id.seekBar2);
-        mSeekBarY.setOnSeekBarChangeListener(this);
-
-        mChart = (BarChart) findViewById(R.id.chart1);
-
-        mChart.getDescription().setEnabled(false);
-
-        // if more than 60 entries are displayed in the chart, no values will be
-        // drawn
-        mChart.setMaxVisibleValueCount(60);
-
-        // scaling can now only be done on x- and y-axis separately
-        mChart.setPinchZoom(false);
-
-        mChart.setDrawBarShadow(false);
-        mChart.setDrawGridBackground(false);
-
-        XAxis xAxis = mChart.getXAxis();
-        xAxis.setPosition(XAxisPosition.BOTTOM);
-        xAxis.setDrawGridLines(false);
-        
-        mChart.getAxisLeft().setDrawGridLines(false);
-
-        // setting data
-        mSeekBarX.setProgress(10);
-        mSeekBarY.setProgress(100);
-
-        // add a nice and smooth animation
-        mChart.animateY(2500);
-        
-        mChart.getLegend().setEnabled(false);
-    }
-
-    @Override
-    public boolean onCreateOptionsMenu(Menu menu) {
-        getMenuInflater().inflate(R.menu.bar, menu);
-        return true;
-    }
-
-    @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
-
-        switch (item.getItemId()) {
-            case R.id.actionToggleValues: {
-
-                for (IDataSet set : mChart.getData().getDataSets())
-                    set.setDrawValues(!set.isDrawValuesEnabled());
-
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionToggleHighlight: {
-
-                if(mChart.getData() != null) {
-                    mChart.getData().setHighlightEnabled(!mChart.getData().isHighlightEnabled());
-                    mChart.invalidate();
-                }
-                break;
-            }
-            case R.id.actionTogglePinch: {
-                if (mChart.isPinchZoomEnabled())
-                    mChart.setPinchZoom(false);
-                else
-                    mChart.setPinchZoom(true);
-
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionToggleAutoScaleMinMax: {
-                mChart.setAutoScaleMinMaxEnabled(!mChart.isAutoScaleMinMaxEnabled());
-                mChart.notifyDataSetChanged();
-                break;
-            }
-            case R.id.actionToggleBarBorders: {
-                for (IBarDataSet set : mChart.getData().getDataSets())
-                    ((BarDataSet)set).setBarBorderWidth(set.getBarBorderWidth() == 1.f ? 0.f : 1.f);
-
-                mChart.invalidate();
-                break;
-            }
-            case R.id.animateX: {
-                mChart.animateX(3000);
-                break;
-            }
-            case R.id.animateY: {
-                mChart.animateY(3000);
-                break;
-            }
-            case R.id.animateXY: {
-
-                mChart.animateXY(3000, 3000);
-                break;
-            }
-            case R.id.actionSave: {
-                if (mChart.saveToGallery("title" + System.currentTimeMillis(), 50)) {
-                    Toast.makeText(getApplicationContext(), "Saving SUCCESSFUL!",
-                            Toast.LENGTH_SHORT).show();
-                } else
-                    Toast.makeText(getApplicationContext(), "Saving FAILED!", Toast.LENGTH_SHORT)
-                            .show();
-                break;
-            }
-        }
-        return true;
-    }
-
-    @Override
-    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
-
-        tvX.setText("" + (mSeekBarX.getProgress() + 1));
-        tvY.setText("" + (mSeekBarY.getProgress()));
-
-        ArrayList<BarEntry> yVals1 = new ArrayList<BarEntry>();
-
-        for (int i = 0; i < mSeekBarX.getProgress() + 1; i++) {
-            float mult = (mSeekBarY.getProgress() + 1);
-            float val = (float) (Math.random() * mult) + mult / 3;
-            yVals1.add(new BarEntry(i, val));
-        }
-
-        BarDataSet set1;
-
-        if (mChart.getData() != null &&
-                mChart.getData().getDataSetCount() > 0) {
-            set1 = (BarDataSet)mChart.getData().getDataSetByIndex(0);
-            set1.setValues(yVals1);
-            mChart.getData().notifyDataChanged();
-            mChart.notifyDataSetChanged();
-        } else {
-            set1 = new BarDataSet(yVals1, "Data Set");
-            set1.setColors(ColorTemplate.VORDIPLOM_COLORS);
-            set1.setDrawValues(false);
-
-            ArrayList<IBarDataSet> dataSets = new ArrayList<IBarDataSet>();
-            dataSets.add(set1);
-
-            BarData data = new BarData(dataSets);
-            mChart.setData(data);
-            mChart.setFitBars(true);
-        }
-
-        mChart.invalidate();
-    }
-
-    @Override
-    public void onStartTrackingTouch(SeekBar seekBar) {
-        // TODO Auto-generated method stub
-
-    }
-
-    @Override
-    public void onStopTrackingTouch(SeekBar seekBar) {
-        // TODO Auto-generated method stub
-
-    }
-}

MPChartExample/src/com/xxmassdeveloper/mpchartexample/BarChartActivity.java

@@ -1,306 +0,0 @@
-
-package com.xxmassdeveloper.mpchartexample;
-
-import android.annotation.SuppressLint;
-import android.graphics.RectF;
-import android.os.Bundle;
-import android.util.Log;
-import android.view.Menu;
-import android.view.MenuItem;
-import android.view.WindowManager;
-import android.widget.SeekBar;
-import android.widget.SeekBar.OnSeekBarChangeListener;
-import android.widget.TextView;
-import android.widget.Toast;
-
-import com.github.mikephil.charting.charts.BarChart;
-import com.github.mikephil.charting.components.Legend;
-import com.github.mikephil.charting.components.Legend.LegendForm;
-import com.github.mikephil.charting.components.Legend.LegendPosition;
-import com.github.mikephil.charting.components.XAxis;
-import com.github.mikephil.charting.components.XAxis.XAxisPosition;
-import com.github.mikephil.charting.components.YAxis;
-import com.github.mikephil.charting.components.YAxis.AxisDependency;
-import com.github.mikephil.charting.components.YAxis.YAxisLabelPosition;
-import com.github.mikephil.charting.data.BarData;
-import com.github.mikephil.charting.data.BarDataSet;
-import com.github.mikephil.charting.data.BarEntry;
-import com.github.mikephil.charting.data.Entry;
-import com.github.mikephil.charting.formatter.IAxisValueFormatter;
-import com.github.mikephil.charting.highlight.Highlight;
-import com.github.mikephil.charting.interfaces.datasets.IBarDataSet;
-import com.github.mikephil.charting.interfaces.datasets.IDataSet;
-import com.github.mikephil.charting.listener.OnChartValueSelectedListener;
-import com.github.mikephil.charting.utils.ColorTemplate;
-import com.github.mikephil.charting.utils.MPPointF;
-import com.xxmassdeveloper.mpchartexample.custom.DayAxisValueFormatter;
-import com.xxmassdeveloper.mpchartexample.custom.MyAxisValueFormatter;
-import com.xxmassdeveloper.mpchartexample.custom.XYMarkerView;
-import com.xxmassdeveloper.mpchartexample.notimportant.DemoBase;
-
-import java.util.ArrayList;
-
-public class BarChartActivity extends DemoBase implements OnSeekBarChangeListener,
-        OnChartValueSelectedListener {
-
-    protected BarChart mChart;
-    private SeekBar mSeekBarX, mSeekBarY;
-    private TextView tvX, tvY;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
-                WindowManager.LayoutParams.FLAG_FULLSCREEN);
-        setContentView(R.layout.activity_barchart);
-
-        tvX = (TextView) findViewById(R.id.tvXMax);
-        tvY = (TextView) findViewById(R.id.tvYMax);
-
-        mSeekBarX = (SeekBar) findViewById(R.id.seekBar1);
-        mSeekBarY = (SeekBar) findViewById(R.id.seekBar2);
-
-        mChart = (BarChart) findViewById(R.id.chart1);
-        mChart.setOnChartValueSelectedListener(this);
-
-        mChart.setDrawBarShadow(false);
-        mChart.setDrawValueAboveBar(true);
-
-        mChart.getDescription().setEnabled(false);
-
-        // if more than 60 entries are displayed in the chart, no values will be
-        // drawn
-        mChart.setMaxVisibleValueCount(60);
-
-        // scaling can now only be done on x- and y-axis separately
-        mChart.setPinchZoom(false);
-
-        mChart.setDrawGridBackground(false);
-        // mChart.setDrawYLabels(false);
-
-        IAxisValueFormatter xAxisFormatter = new DayAxisValueFormatter(mChart);
-
-        XAxis xAxis = mChart.getXAxis();
-        xAxis.setPosition(XAxisPosition.BOTTOM);
-        xAxis.setTypeface(mTfLight);
-        xAxis.setDrawGridLines(false);
-        xAxis.setGranularity(1f); // only intervals of 1 day
-        xAxis.setLabelCount(7);
-        xAxis.setValueFormatter(xAxisFormatter);
-
-        IAxisValueFormatter custom = new MyAxisValueFormatter();
-
-        YAxis leftAxis = mChart.getAxisLeft();
-        leftAxis.setTypeface(mTfLight);
-        leftAxis.setLabelCount(8, false);
-        leftAxis.setValueFormatter(custom);
-        leftAxis.setPosition(YAxisLabelPosition.OUTSIDE_CHART);
-        leftAxis.setSpaceTop(15f);
-        leftAxis.setAxisMinimum(0f); // this replaces setStartAtZero(true)
-
-        YAxis rightAxis = mChart.getAxisRight();
-        rightAxis.setDrawGridLines(false);
-        rightAxis.setTypeface(mTfLight);
-        rightAxis.setLabelCount(8, false);
-        rightAxis.setValueFormatter(custom);
-        rightAxis.setSpaceTop(15f);
-        rightAxis.setAxisMinimum(0f); // this replaces setStartAtZero(true)
-
-        Legend l = mChart.getLegend();
-        l.setVerticalAlignment(Legend.LegendVerticalAlignment.BOTTOM);
-        l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.LEFT);
-        l.setOrientation(Legend.LegendOrientation.HORIZONTAL);
-        l.setDrawInside(false);
-        l.setForm(LegendForm.SQUARE);
-        l.setFormSize(9f);
-        l.setTextSize(11f);
-        l.setXEntrySpace(4f);
-        // l.setExtra(ColorTemplate.VORDIPLOM_COLORS, new String[] { "abc",
-        // "def", "ghj", "ikl", "mno" });
-        // l.setCustom(ColorTemplate.VORDIPLOM_COLORS, new String[] { "abc",
-        // "def", "ghj", "ikl", "mno" });
-
-        XYMarkerView mv = new XYMarkerView(this, xAxisFormatter);
-        mv.setChartView(mChart); // For bounds control
-        mChart.setMarker(mv); // Set the marker to the chart
-
-        setData(12, 50);
-
-        // setting data
-        mSeekBarY.setProgress(50);
-        mSeekBarX.setProgress(12);
-
-        mSeekBarY.setOnSeekBarChangeListener(this);
-        mSeekBarX.setOnSeekBarChangeListener(this);
-
-        // mChart.setDrawLegend(false);
-    }
-
-    @Override
-    public boolean onCreateOptionsMenu(Menu menu) {
-        getMenuInflater().inflate(R.menu.bar, menu);
-        return true;
-    }
-
-    @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
-
-        switch (item.getItemId()) {
-            case R.id.actionToggleValues: {
-                for (IDataSet set : mChart.getData().getDataSets())
-                    set.setDrawValues(!set.isDrawValuesEnabled());
-
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionToggleIcons: {
-                for (IDataSet set : mChart.getData().getDataSets())
-                    set.setDrawIcons(!set.isDrawIconsEnabled());
-
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionToggleHighlight: {
-                if (mChart.getData() != null) {
-                    mChart.getData().setHighlightEnabled(!mChart.getData().isHighlightEnabled());
-                    mChart.invalidate();
-                }
-                break;
-            }
-            case R.id.actionTogglePinch: {
-                if (mChart.isPinchZoomEnabled())
-                    mChart.setPinchZoom(false);
-                else
-                    mChart.setPinchZoom(true);
-
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionToggleAutoScaleMinMax: {
-                mChart.setAutoScaleMinMaxEnabled(!mChart.isAutoScaleMinMaxEnabled());
-                mChart.notifyDataSetChanged();
-                break;
-            }
-            case R.id.actionToggleBarBorders: {
-                for (IBarDataSet set : mChart.getData().getDataSets())
-                    ((BarDataSet) set).setBarBorderWidth(set.getBarBorderWidth() == 1.f ? 0.f : 1.f);
-
-                mChart.invalidate();
-                break;
-            }
-            case R.id.animateX: {
-                mChart.animateX(3000);
-                break;
-            }
-            case R.id.animateY: {
-                mChart.animateY(3000);
-                break;
-            }
-            case R.id.animateXY: {
-
-                mChart.animateXY(3000, 3000);
-                break;
-            }
-            case R.id.actionSave: {
-                if (mChart.saveToGallery("title" + System.currentTimeMillis(), 50)) {
-                    Toast.makeText(getApplicationContext(), "Saving SUCCESSFUL!",
-                            Toast.LENGTH_SHORT).show();
-                } else
-                    Toast.makeText(getApplicationContext(), "Saving FAILED!", Toast.LENGTH_SHORT)
-                            .show();
-                break;
-            }
-        }
-        return true;
-    }
-
-    @Override
-    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
-
-        tvX.setText("" + (mSeekBarX.getProgress() + 2));
-        tvY.setText("" + (mSeekBarY.getProgress()));
-
-        setData(mSeekBarX.getProgress() + 1 , mSeekBarY.getProgress());
-        mChart.invalidate();
-    }
-
-    @Override
-    public void onStartTrackingTouch(SeekBar seekBar) {
-        // TODO Auto-generated method stub
-    }
-
-    @Override
-    public void onStopTrackingTouch(SeekBar seekBar) {
-        // TODO Auto-generated method stub
-    }
-
-    private void setData(int count, float range) {
-
-        float start = 1f;
-
-        ArrayList<BarEntry> yVals1 = new ArrayList<BarEntry>();
-
-        for (int i = (int) start; i < start + count + 1; i++) {
-            float mult = (range + 1);
-            float val = (float) (Math.random() * mult);
-
-            if (Math.random() * 100 < 25) {
-                yVals1.add(new BarEntry(i, val, getResources().getDrawable(R.drawable.star)));
-            } else {
-                yVals1.add(new BarEntry(i, val));
-            }
-        }
-
-        BarDataSet set1;
-
-        if (mChart.getData() != null &&
-                mChart.getData().getDataSetCount() > 0) {
-            set1 = (BarDataSet) mChart.getData().getDataSetByIndex(0);
-            set1.setValues(yVals1);
-            mChart.getData().notifyDataChanged();
-            mChart.notifyDataSetChanged();
-        } else {
-            set1 = new BarDataSet(yVals1, "The year 2017");
-
-            set1.setDrawIcons(false);
-
-            set1.setColors(ColorTemplate.MATERIAL_COLORS);
-
-            ArrayList<IBarDataSet> dataSets = new ArrayList<IBarDataSet>();
-            dataSets.add(set1);
-
-            BarData data = new BarData(dataSets);
-            data.setValueTextSize(10f);
-            data.setValueTypeface(mTfLight);
-            data.setBarWidth(0.9f);
-
-            mChart.setData(data);
-        }
-    }
-
-    protected RectF mOnValueSelectedRectF = new RectF();
-
-    @SuppressLint("NewApi")
-    @Override
-    public void onValueSelected(Entry e, Highlight h) {
-
-        if (e == null)
-            return;
-
-        RectF bounds = mOnValueSelectedRectF;
-        mChart.getBarBounds((BarEntry) e, bounds);
-        MPPointF position = mChart.getPosition(e, AxisDependency.LEFT);
-
-        Log.i("bounds", bounds.toString());
-        Log.i("position", position.toString());
-
-        Log.i("x-index",
-                "low: " + mChart.getLowestVisibleX() + ", high: "
-                        + mChart.getHighestVisibleX());
-
-        MPPointF.recycleInstance(position);
-    }
-
-    @Override
-    public void onNothingSelected() { }
-}

MPChartExample/src/com/xxmassdeveloper/mpchartexample/LineChartActivity1.java

@@ -1,464 +0,0 @@
-
-package com.xxmassdeveloper.mpchartexample;
-
-import android.graphics.Color;
-import android.graphics.DashPathEffect;
-import android.graphics.Typeface;
-import android.graphics.drawable.Drawable;
-import android.os.Bundle;
-import android.support.v4.content.ContextCompat;
-import android.util.Log;
-import android.view.Menu;
-import android.view.MenuItem;
-import android.view.MotionEvent;
-import android.view.WindowManager;
-import android.widget.SeekBar;
-import android.widget.SeekBar.OnSeekBarChangeListener;
-import android.widget.TextView;
-import android.widget.Toast;
-
-import com.github.mikephil.charting.animation.Easing;
-import com.github.mikephil.charting.charts.LineChart;
-import com.github.mikephil.charting.components.Legend;
-import com.github.mikephil.charting.components.Legend.LegendForm;
-import com.github.mikephil.charting.components.LimitLine;
-import com.github.mikephil.charting.components.LimitLine.LimitLabelPosition;
-import com.github.mikephil.charting.components.XAxis;
-import com.github.mikephil.charting.components.YAxis;
-import com.github.mikephil.charting.data.Entry;
-import com.github.mikephil.charting.data.LineData;
-import com.github.mikephil.charting.data.LineDataSet;
-import com.github.mikephil.charting.highlight.Highlight;
-import com.github.mikephil.charting.interfaces.datasets.ILineDataSet;
-import com.github.mikephil.charting.listener.ChartTouchListener;
-import com.github.mikephil.charting.listener.OnChartGestureListener;
-import com.github.mikephil.charting.listener.OnChartValueSelectedListener;
-import com.github.mikephil.charting.utils.Utils;
-import com.xxmassdeveloper.mpchartexample.custom.MyMarkerView;
-import com.xxmassdeveloper.mpchartexample.notimportant.DemoBase;
-
-import java.util.ArrayList;
-import java.util.List;
-
-public class LineChartActivity1 extends DemoBase implements OnSeekBarChangeListener,
-        OnChartGestureListener, OnChartValueSelectedListener {
-
-    private LineChart mChart;
-    private SeekBar mSeekBarX, mSeekBarY;
-    private TextView tvX, tvY;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
-                WindowManager.LayoutParams.FLAG_FULLSCREEN);
-        setContentView(R.layout.activity_linechart);
-
-        tvX = (TextView) findViewById(R.id.tvXMax);
-        tvY = (TextView) findViewById(R.id.tvYMax);
-
-        mSeekBarX = (SeekBar) findViewById(R.id.seekBar1);
-        mSeekBarY = (SeekBar) findViewById(R.id.seekBar2);
-
-        mSeekBarX.setProgress(45);
-        mSeekBarY.setProgress(100);
-
-        mSeekBarY.setOnSeekBarChangeListener(this);
-        mSeekBarX.setOnSeekBarChangeListener(this);
-
-        mChart = (LineChart) findViewById(R.id.chart1);
-        mChart.setOnChartGestureListener(this);
-        mChart.setOnChartValueSelectedListener(this);
-        mChart.setDrawGridBackground(false);
-
-        // no description text
-        mChart.getDescription().setEnabled(false);
-
-        // enable touch gestures
-        mChart.setTouchEnabled(true);
-
-        // enable scaling and dragging
-        mChart.setDragEnabled(true);
-        mChart.setScaleEnabled(true);
-        // mChart.setScaleXEnabled(true);
-        // mChart.setScaleYEnabled(true);
-
-        // if disabled, scaling can be done on x- and y-axis separately
-        mChart.setPinchZoom(true);
-
-        // set an alternative background color
-        // mChart.setBackgroundColor(Color.GRAY);
-
-        // create a custom MarkerView (extend MarkerView) and specify the layout
-        // to use for it
-        MyMarkerView mv = new MyMarkerView(this, R.layout.custom_marker_view);
-        mv.setChartView(mChart); // For bounds control
-        mChart.setMarker(mv); // Set the marker to the chart
-
-        // x-axis limit line
-        LimitLine llXAxis = new LimitLine(10f, "Index 10");
-        llXAxis.setLineWidth(4f);
-        llXAxis.enableDashedLine(10f, 10f, 0f);
-        llXAxis.setLabelPosition(LimitLabelPosition.RIGHT_BOTTOM);
-        llXAxis.setTextSize(10f);
-
-        XAxis xAxis = mChart.getXAxis();
-        xAxis.enableGridDashedLine(10f, 10f, 0f);
-        //xAxis.setValueFormatter(new MyCustomXAxisValueFormatter());
-        //xAxis.addLimitLine(llXAxis); // add x-axis limit line
-
-
-        Typeface tf = Typeface.createFromAsset(getAssets(), "OpenSans-Regular.ttf");
-
-        LimitLine ll1 = new LimitLine(150f, "Upper Limit");
-        ll1.setLineWidth(4f);
-        ll1.enableDashedLine(10f, 10f, 0f);
-        ll1.setLabelPosition(LimitLabelPosition.RIGHT_TOP);
-        ll1.setTextSize(10f);
-        ll1.setTypeface(tf);
-
-        LimitLine ll2 = new LimitLine(-30f, "Lower Limit");
-        ll2.setLineWidth(4f);
-        ll2.enableDashedLine(10f, 10f, 0f);
-        ll2.setLabelPosition(LimitLabelPosition.RIGHT_BOTTOM);
-        ll2.setTextSize(10f);
-        ll2.setTypeface(tf);
-
-        YAxis leftAxis = mChart.getAxisLeft();
-        leftAxis.removeAllLimitLines(); // reset all limit lines to avoid overlapping lines
-        leftAxis.addLimitLine(ll1);
-        leftAxis.addLimitLine(ll2);
-        leftAxis.setAxisMaximum(200f);
-        leftAxis.setAxisMinimum(-50f);
-        //leftAxis.setYOffset(20f);
-        leftAxis.enableGridDashedLine(10f, 10f, 0f);
-        leftAxis.setDrawZeroLine(false);
-
-        // limit lines are drawn behind data (and not on top)
-        leftAxis.setDrawLimitLinesBehindData(true);
-
-        mChart.getAxisRight().setEnabled(false);
-
-        //mChart.getViewPortHandler().setMaximumScaleY(2f);
-        //mChart.getViewPortHandler().setMaximumScaleX(2f);
-
-        // add data
-        setData(45, 100);
-
-//        mChart.setVisibleXRange(20);
-//        mChart.setVisibleYRange(20f, AxisDependency.LEFT);
-//        mChart.centerViewTo(20, 50, AxisDependency.LEFT);
-
-        mChart.animateX(2500);
-        //mChart.invalidate();
-
-        // get the legend (only possible after setting data)
-        Legend l = mChart.getLegend();
-
-        // modify the legend ...
-        l.setForm(LegendForm.LINE);
-
-        // // dont forget to refresh the drawing
-        // mChart.invalidate();
-    }
-
-    @Override
-    public void onWindowFocusChanged(boolean hasFocus) {
-        super.onWindowFocusChanged(hasFocus);
-    }
-
-    @Override
-    public boolean onCreateOptionsMenu(Menu menu) {
-        getMenuInflater().inflate(R.menu.line, menu);
-        return true;
-    }
-
-    @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
-
-        switch (item.getItemId()) {
-            case R.id.actionToggleValues: {
-                List<ILineDataSet> sets = mChart.getData()
-                        .getDataSets();
-
-                for (ILineDataSet iSet : sets) {
-
-                    LineDataSet set = (LineDataSet) iSet;
-                    set.setDrawValues(!set.isDrawValuesEnabled());
-                }
-
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionToggleIcons: {
-                List<ILineDataSet> sets = mChart.getData()
-                        .getDataSets();
-
-                for (ILineDataSet iSet : sets) {
-
-                    LineDataSet set = (LineDataSet) iSet;
-                    set.setDrawIcons(!set.isDrawIconsEnabled());
-                }
-
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionToggleHighlight: {
-                if(mChart.getData() != null) {
-                    mChart.getData().setHighlightEnabled(!mChart.getData().isHighlightEnabled());
-                    mChart.invalidate();
-                }
-                break;
-            }
-            case R.id.actionToggleFilled: {
-
-                List<ILineDataSet> sets = mChart.getData()
-                        .getDataSets();
-
-                for (ILineDataSet iSet : sets) {
-
-                    LineDataSet set = (LineDataSet) iSet;
-                    if (set.isDrawFilledEnabled())
-                        set.setDrawFilled(false);
-                    else
-                        set.setDrawFilled(true);
-                }
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionToggleCircles: {
-                List<ILineDataSet> sets = mChart.getData()
-                        .getDataSets();
-
-                for (ILineDataSet iSet : sets) {
-
-                    LineDataSet set = (LineDataSet) iSet;
-                    if (set.isDrawCirclesEnabled())
-                        set.setDrawCircles(false);
-                    else
-                        set.setDrawCircles(true);
-                }
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionToggleCubic: {
-                List<ILineDataSet> sets = mChart.getData()
-                        .getDataSets();
-
-                for (ILineDataSet iSet : sets) {
-
-                    LineDataSet set = (LineDataSet) iSet;
-                    set.setMode(set.getMode() == LineDataSet.Mode.CUBIC_BEZIER
-                            ? LineDataSet.Mode.LINEAR
-                            :  LineDataSet.Mode.CUBIC_BEZIER);
-                }
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionToggleStepped: {
-                List<ILineDataSet> sets = mChart.getData()
-                        .getDataSets();
-
-                for (ILineDataSet iSet : sets) {
-
-                    LineDataSet set = (LineDataSet) iSet;
-                    set.setMode(set.getMode() == LineDataSet.Mode.STEPPED
-                            ? LineDataSet.Mode.LINEAR
-                            :  LineDataSet.Mode.STEPPED);
-                }
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionToggleHorizontalCubic: {
-                List<ILineDataSet> sets = mChart.getData()
-                        .getDataSets();
-
-                for (ILineDataSet iSet : sets) {
-
-                    LineDataSet set = (LineDataSet) iSet;
-                    set.setMode(set.getMode() == LineDataSet.Mode.HORIZONTAL_BEZIER
-                            ? LineDataSet.Mode.LINEAR
-                            :  LineDataSet.Mode.HORIZONTAL_BEZIER);
-                }
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionTogglePinch: {
-                if (mChart.isPinchZoomEnabled())
-                    mChart.setPinchZoom(false);
-                else
-                    mChart.setPinchZoom(true);
-
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionToggleAutoScaleMinMax: {
-                mChart.setAutoScaleMinMaxEnabled(!mChart.isAutoScaleMinMaxEnabled());
-                mChart.notifyDataSetChanged();
-                break;
-            }
-            case R.id.animateX: {
-                mChart.animateX(3000);
-                break;
-            }
-            case R.id.animateY: {
-                mChart.animateY(3000, Easing.EasingOption.EaseInCubic);
-                break;
-            }
-            case R.id.animateXY: {
-                mChart.animateXY(3000, 3000);
-                break;
-            }
-            case R.id.actionSave: {
-                if (mChart.saveToPath("title" + System.currentTimeMillis(), "")) {
-                    Toast.makeText(getApplicationContext(), "Saving SUCCESSFUL!",
-                            Toast.LENGTH_SHORT).show();
-                } else
-                    Toast.makeText(getApplicationContext(), "Saving FAILED!", Toast.LENGTH_SHORT)
-                            .show();
-
-                // mChart.saveToGallery("title"+System.currentTimeMillis())
-                break;
-            }
-        }
-        return true;
-    }
-
-    @Override
-    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
-
-        tvX.setText("" + (mSeekBarX.getProgress() + 1));
-        tvY.setText("" + (mSeekBarY.getProgress()));
-
-        setData(mSeekBarX.getProgress() + 1, mSeekBarY.getProgress());
-
-        // redraw
-        mChart.invalidate();
-    }
-
-    @Override
-    public void onStartTrackingTouch(SeekBar seekBar) {
-        // TODO Auto-generated method stub
-
-    }
-
-    @Override
-    public void onStopTrackingTouch(SeekBar seekBar) {
-        // TODO Auto-generated method stub
-
-    }
-
-    private void setData(int count, float range) {
-
-        ArrayList<Entry> values = new ArrayList<Entry>();
-
-        for (int i = 0; i < count; i++) {
-
-            float val = (float) (Math.random() * range) + 3;
-            values.add(new Entry(i, val, getResources().getDrawable(R.drawable.star)));
-        }
-
-        LineDataSet set1;
-
-        if (mChart.getData() != null &&
-                mChart.getData().getDataSetCount() > 0) {
-            set1 = (LineDataSet)mChart.getData().getDataSetByIndex(0);
-            set1.setValues(values);
-            mChart.getData().notifyDataChanged();
-            mChart.notifyDataSetChanged();
-        } else {
-            // create a dataset and give it a type
-            set1 = new LineDataSet(values, "DataSet 1");
-
-            set1.setDrawIcons(false);
-
-            // set the line to be drawn like this "- - - - - -"
-            set1.enableDashedLine(10f, 5f, 0f);
-            set1.enableDashedHighlightLine(10f, 5f, 0f);
-            set1.setColor(Color.BLACK);
-            set1.setCircleColor(Color.BLACK);
-            set1.setLineWidth(1f);
-            set1.setCircleRadius(3f);
-            set1.setDrawCircleHole(false);
-            set1.setValueTextSize(9f);
-            set1.setDrawFilled(true);
-            set1.setFormLineWidth(1f);
-            set1.setFormLineDashEffect(new DashPathEffect(new float[]{10f, 5f}, 0f));
-            set1.setFormSize(15.f);
-
-            if (Utils.getSDKInt() >= 18) {
-                // fill drawable only supported on api level 18 and above
-                Drawable drawable = ContextCompat.getDrawable(this, R.drawable.fade_red);
-                set1.setFillDrawable(drawable);
-            }
-            else {
-                set1.setFillColor(Color.BLACK);
-            }
-
-            ArrayList<ILineDataSet> dataSets = new ArrayList<ILineDataSet>();
-            dataSets.add(set1); // add the datasets
-
-            // create a data object with the datasets
-            LineData data = new LineData(dataSets);
-
-            // set data
-            mChart.setData(data);
-        }
-    }
-
-    @Override
-    public void onChartGestureStart(MotionEvent me, ChartTouchListener.ChartGesture lastPerformedGesture) {
-        Log.i("Gesture", "START, x: " + me.getX() + ", y: " + me.getY());
-    }
-
-    @Override
-    public void onChartGestureEnd(MotionEvent me, ChartTouchListener.ChartGesture lastPerformedGesture) {
-        Log.i("Gesture", "END, lastGesture: " + lastPerformedGesture);
-
-        // un-highlight values after the gesture is finished and no single-tap
-        if(lastPerformedGesture != ChartTouchListener.ChartGesture.SINGLE_TAP)
-            mChart.highlightValues(null); // or highlightTouch(null) for callback to onNothingSelected(...)
-    }
-
-    @Override
-    public void onChartLongPressed(MotionEvent me) {
-        Log.i("LongPress", "Chart longpressed.");
-    }
-
-    @Override
-    public void onChartDoubleTapped(MotionEvent me) {
-        Log.i("DoubleTap", "Chart double-tapped.");
-    }
-
-    @Override
-    public void onChartSingleTapped(MotionEvent me) {
-        Log.i("SingleTap", "Chart single-tapped.");
-    }
-
-    @Override
-    public void onChartFling(MotionEvent me1, MotionEvent me2, float velocityX, float velocityY) {
-        Log.i("Fling", "Chart flinged. VeloX: " + velocityX + ", VeloY: " + velocityY);
-    }
-
-    @Override
-    public void onChartScale(MotionEvent me, float scaleX, float scaleY) {
-        Log.i("Scale / Zoom", "ScaleX: " + scaleX + ", ScaleY: " + scaleY);
-    }
-
-    @Override
-    public void onChartTranslate(MotionEvent me, float dX, float dY) {
-        Log.i("Translate / Move", "dX: " + dX + ", dY: " + dY);
-    }
-
-    @Override
-    public void onValueSelected(Entry e, Highlight h) {
-        Log.i("Entry selected", e.toString());
-        Log.i("LOWHIGH", "low: " + mChart.getLowestVisibleX() + ", high: " + mChart.getHighestVisibleX());
-        Log.i("MIN MAX", "xmin: " + mChart.getXChartMin() + ", xmax: " + mChart.getXChartMax() + ", ymin: " + mChart.getYChartMin() + ", ymax: " + mChart.getYChartMax());
-    }
-
-    @Override
-    public void onNothingSelected() {
-        Log.i("Nothing selected", "Nothing selected.");
-    }
-}

MPChartExample/src/com/xxmassdeveloper/mpchartexample/MultiLineChartActivity.java

@@ -1,245 +0,0 @@
-
-package com.xxmassdeveloper.mpchartexample;
-
-import android.os.Bundle;
-import android.util.Log;
-import android.view.Menu;
-import android.view.MenuItem;
-import android.view.WindowManager;
-import android.widget.SeekBar;
-import android.widget.SeekBar.OnSeekBarChangeListener;
-import android.widget.TextView;
-
-import com.github.mikephil.charting.charts.LineChart;
-import com.github.mikephil.charting.components.Legend;
-import com.github.mikephil.charting.components.Legend.LegendPosition;
-import com.github.mikephil.charting.data.Entry;
-import com.github.mikephil.charting.data.LineData;
-import com.github.mikephil.charting.data.LineDataSet;
-import com.github.mikephil.charting.highlight.Highlight;
-import com.github.mikephil.charting.interfaces.datasets.ILineDataSet;
-import com.github.mikephil.charting.listener.OnChartValueSelectedListener;
-import com.github.mikephil.charting.utils.ColorTemplate;
-import com.xxmassdeveloper.mpchartexample.notimportant.DemoBase;
-
-import java.util.ArrayList;
-import java.util.List;
-
-public class MultiLineChartActivity extends DemoBase implements OnSeekBarChangeListener,
-        OnChartValueSelectedListener {
-
-    private LineChart mChart;
-    private SeekBar mSeekBarX, mSeekBarY;
-    private TextView tvX, tvY;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
-                WindowManager.LayoutParams.FLAG_FULLSCREEN);
-        setContentView(R.layout.activity_linechart);
-
-        tvX = (TextView) findViewById(R.id.tvXMax);
-        tvY = (TextView) findViewById(R.id.tvYMax);
-
-        mSeekBarX = (SeekBar) findViewById(R.id.seekBar1);
-        mSeekBarX.setOnSeekBarChangeListener(this);
-
-        mSeekBarY = (SeekBar) findViewById(R.id.seekBar2);
-        mSeekBarY.setOnSeekBarChangeListener(this);
-
-        mChart = (LineChart) findViewById(R.id.chart1);
-        mChart.setOnChartValueSelectedListener(this);
-        
-        mChart.setDrawGridBackground(false);
-        mChart.getDescription().setEnabled(false);
-        mChart.setDrawBorders(false);
-
-        mChart.getAxisLeft().setEnabled(false);
-        mChart.getAxisRight().setDrawAxisLine(false);
-        mChart.getAxisRight().setDrawGridLines(false);
-        mChart.getXAxis().setDrawAxisLine(false);
-        mChart.getXAxis().setDrawGridLines(false);
-
-        // enable touch gestures
-        mChart.setTouchEnabled(true);
-
-        // enable scaling and dragging
-        mChart.setDragEnabled(true);
-        mChart.setScaleEnabled(true);
-
-        // if disabled, scaling can be done on x- and y-axis separately
-        mChart.setPinchZoom(false);
-
-        mSeekBarX.setProgress(20);
-        mSeekBarY.setProgress(100);
-
-        Legend l = mChart.getLegend();
-        l.setVerticalAlignment(Legend.LegendVerticalAlignment.TOP);
-        l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.RIGHT);
-        l.setOrientation(Legend.LegendOrientation.VERTICAL);
-        l.setDrawInside(false);
-    }
-
-    @Override
-    public boolean onCreateOptionsMenu(Menu menu) {
-        getMenuInflater().inflate(R.menu.line, menu);
-        return true;
-    }
-
-    @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
-
-        switch (item.getItemId()) {
-            case R.id.actionToggleValues: {
-                List<ILineDataSet> sets = mChart.getData()
-                        .getDataSets();
-
-                for (ILineDataSet iSet : sets) {
-
-                    LineDataSet set = (LineDataSet) iSet;
-                    set.setDrawValues(!set.isDrawValuesEnabled());
-                }
-
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionTogglePinch: {
-                if (mChart.isPinchZoomEnabled())
-                    mChart.setPinchZoom(false);
-                else
-                    mChart.setPinchZoom(true);
-
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionToggleAutoScaleMinMax: {
-                mChart.setAutoScaleMinMaxEnabled(!mChart.isAutoScaleMinMaxEnabled());
-                mChart.notifyDataSetChanged();
-                break;
-            }
-            case R.id.actionToggleHighlight: {
-                if(mChart.getData() != null) {
-                    mChart.getData().setHighlightEnabled(!mChart.getData().isHighlightEnabled());
-                    mChart.invalidate();
-                }
-                break;
-            }
-            case R.id.actionToggleFilled: {
-                List<ILineDataSet> sets = mChart.getData()
-                        .getDataSets();
-
-                for (ILineDataSet iSet : sets) {
-
-                    LineDataSet set = (LineDataSet) iSet;
-                    if (set.isDrawFilledEnabled())
-                        set.setDrawFilled(false);
-                    else
-                        set.setDrawFilled(true);
-                }
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionToggleCircles: {
-                List<ILineDataSet> sets = mChart.getData()
-                        .getDataSets();
-
-                for (ILineDataSet iSet : sets) {
-
-                    LineDataSet set = (LineDataSet) iSet;
-                    if (set.isDrawCirclesEnabled())
-                        set.setDrawCircles(false);
-                    else
-                        set.setDrawCircles(true);
-                }
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionSave: {
-                // mChart.saveToGallery("title"+System.currentTimeMillis());
-                mChart.saveToPath("title" + System.currentTimeMillis(), "");
-                break;
-            }
-            case R.id.animateX: {
-                mChart.animateX(3000);
-                break;
-            }
-            case R.id.animateY: {
-                mChart.animateY(3000);
-                break;
-            }
-            case R.id.animateXY: {
-
-                mChart.animateXY(3000, 3000);
-                break;
-            }
-        }
-        return true;
-    }
-
-    private int[] mColors = new int[] {
-            ColorTemplate.VORDIPLOM_COLORS[0], 
-            ColorTemplate.VORDIPLOM_COLORS[1],
-            ColorTemplate.VORDIPLOM_COLORS[2]
-    };
-
-    @Override
-    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
-        
-        mChart.resetTracking();
-
-        tvX.setText("" + (mSeekBarX.getProgress()));
-        tvY.setText("" + (mSeekBarY.getProgress()));
-
-        ArrayList<ILineDataSet> dataSets = new ArrayList<ILineDataSet>();
-
-        for (int z = 0; z < 3; z++) {
-
-            ArrayList<Entry> values = new ArrayList<Entry>();
-
-            for (int i = 0; i < mSeekBarX.getProgress(); i++) {
-                double val = (Math.random() * mSeekBarY.getProgress()) + 3;
-                values.add(new Entry(i, (float) val));
-            }
-
-            LineDataSet d = new LineDataSet(values, "DataSet " + (z + 1));
-            d.setLineWidth(2.5f);
-            d.setCircleRadius(4f);
-
-            int color = mColors[z % mColors.length];
-            d.setColor(color);
-            d.setCircleColor(color);
-            dataSets.add(d);
-        }
-
-        // make the first DataSet dashed
-        ((LineDataSet) dataSets.get(0)).enableDashedLine(10, 10, 0);
-        ((LineDataSet) dataSets.get(0)).setColors(ColorTemplate.VORDIPLOM_COLORS);
-        ((LineDataSet) dataSets.get(0)).setCircleColors(ColorTemplate.VORDIPLOM_COLORS);
-
-        LineData data = new LineData(dataSets);
-        mChart.setData(data);
-        mChart.invalidate();
-    }
-
-    @Override
-    public void onValueSelected(Entry e, Highlight h) {
-        Log.i("VAL SELECTED",
-                "Value: " + e.getY() + ", xIndex: " + e.getX()
-                        + ", DataSet index: " + h.getDataSetIndex());
-    }
-
-    @Override
-    public void onNothingSelected() {
-        // TODO Auto-generated method stub
-
-    }
-
-    @Override
-    public void onStartTrackingTouch(SeekBar seekBar) {
-    }
-
-    @Override
-    public void onStopTrackingTouch(SeekBar seekBar) {
-    }
-}

MPChartExample/src/com/xxmassdeveloper/mpchartexample/PerformanceLineChart.java

@@ -1,124 +0,0 @@
-
-package com.xxmassdeveloper.mpchartexample;
-
-import android.graphics.Color;
-import android.os.Bundle;
-import android.view.WindowManager;
-import android.widget.SeekBar;
-import android.widget.SeekBar.OnSeekBarChangeListener;
-import android.widget.TextView;
-
-import com.github.mikephil.charting.charts.LineChart;
-import com.github.mikephil.charting.components.Legend;
-import com.github.mikephil.charting.data.Entry;
-import com.github.mikephil.charting.data.LineData;
-import com.github.mikephil.charting.data.LineDataSet;
-import com.xxmassdeveloper.mpchartexample.notimportant.DemoBase;
-
-import java.util.ArrayList;
-
-public class PerformanceLineChart extends DemoBase implements OnSeekBarChangeListener {
-
-    private LineChart mChart;
-    private SeekBar mSeekBarValues;
-    private TextView mTvCount;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
-                WindowManager.LayoutParams.FLAG_FULLSCREEN);
-        setContentView(R.layout.activity_performance_linechart);
-
-        mTvCount = (TextView) findViewById(R.id.tvValueCount);
-        mSeekBarValues = (SeekBar) findViewById(R.id.seekbarValues);
-        mTvCount.setText("500");
-
-        mSeekBarValues.setProgress(500);
-        
-        mSeekBarValues.setOnSeekBarChangeListener(this);
-
-        mChart = (LineChart) findViewById(R.id.chart1);
-        mChart.setDrawGridBackground(false);
-
-        // no description text
-        mChart.getDescription().setEnabled(false);
-
-        // enable touch gestures
-        mChart.setTouchEnabled(true);
-
-        // enable scaling and dragging
-        mChart.setDragEnabled(true);
-        mChart.setScaleEnabled(true);
-
-        // if disabled, scaling can be done on x- and y-axis separately
-        mChart.setPinchZoom(false);
-              
-        mChart.getAxisLeft().setDrawGridLines(false);
-        mChart.getAxisRight().setEnabled(false);
-        mChart.getXAxis().setDrawGridLines(true);
-        mChart.getXAxis().setDrawAxisLine(false);
-
-        // dont forget to refresh the drawing
-        mChart.invalidate();
-    }
-
-    @Override
-    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
-
-        int count = mSeekBarValues.getProgress() + 1000;
-        mTvCount.setText("" + count);
-        
-        mChart.resetTracking();
-
-        setData(count, 500f);
-       
-        // redraw
-        mChart.invalidate();
-    }
-
-    @Override
-    public void onStartTrackingTouch(SeekBar seekBar) {
-        // TODO Auto-generated method stub
-
-    }
-
-    @Override
-    public void onStopTrackingTouch(SeekBar seekBar) {
-        // TODO Auto-generated method stub
-
-    }
-
-    private void setData(int count, float range) {
-
-        ArrayList<Entry> yVals = new ArrayList<Entry>();
-
-        for (int i = 0; i < count; i++) {
-            float mult = (range + 1);
-            float val = (float) (Math.random() * mult) + 3;// + (float)
-                                                           // ((mult *
-                                                           // 0.1) / 10);
-            yVals.add(new Entry(i * 0.001f, val));
-        }
-
-        // create a dataset and give it a type
-        LineDataSet set1 = new LineDataSet(yVals, "DataSet 1");
-        
-        set1.setColor(Color.BLACK);
-        set1.setLineWidth(0.5f);
-        set1.setDrawValues(false);
-        set1.setDrawCircles(false);
-        set1.setMode(LineDataSet.Mode.LINEAR);
-        set1.setDrawFilled(false);
-
-        // create a data object with the datasets
-        LineData data = new LineData(set1);
-
-        // set data
-        mChart.setData(data);
-        
-        // get the legend (only possible after setting data)
-        Legend l = mChart.getLegend();
-        l.setEnabled(false);
-    }
-}

MPChartExample/src/com/xxmassdeveloper/mpchartexample/ScrollViewActivity.java

@@ -1,70 +0,0 @@
-
-package com.xxmassdeveloper.mpchartexample;
-
-import android.os.Bundle;
-import android.view.WindowManager;
-
-import com.github.mikephil.charting.charts.BarChart;
-import com.github.mikephil.charting.components.XAxis;
-import com.github.mikephil.charting.components.XAxis.XAxisPosition;
-import com.github.mikephil.charting.data.BarData;
-import com.github.mikephil.charting.data.BarDataSet;
-import com.github.mikephil.charting.data.BarEntry;
-import com.github.mikephil.charting.utils.ColorTemplate;
-import com.xxmassdeveloper.mpchartexample.notimportant.DemoBase;
-
-import java.util.ArrayList;
-
-public class ScrollViewActivity extends DemoBase {
-
-    private BarChart mChart;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
-                WindowManager.LayoutParams.FLAG_FULLSCREEN);
-        setContentView(R.layout.activity_scrollview);
-
-        mChart = (BarChart) findViewById(R.id.chart1);
-
-        mChart.getDescription().setEnabled(false);
-
-        // scaling can now only be done on x- and y-axis separately
-        mChart.setPinchZoom(false);
-
-        mChart.setDrawBarShadow(false);
-        mChart.setDrawGridBackground(false);
-
-        XAxis xAxis = mChart.getXAxis();
-        xAxis.setPosition(XAxisPosition.BOTTOM);
-        xAxis.setDrawGridLines(false);
-
-        mChart.getAxisLeft().setDrawGridLines(false);
-        
-        mChart.getLegend().setEnabled(false);
-
-        setData(10);
-        mChart.setFitBars(true);
-    }
-    
-    private void setData(int count) {
-        
-        ArrayList<BarEntry> yVals = new ArrayList<BarEntry>();
-
-        for (int i = 0; i < count; i++) {
-            float val = (float) (Math.random() * count) + 15;
-            yVals.add(new BarEntry(i, (int) val));
-        }
-
-        BarDataSet set = new BarDataSet(yVals, "Data Set");
-        set.setColors(ColorTemplate.VORDIPLOM_COLORS);
-        set.setDrawValues(false);
-
-        BarData data = new BarData(set);
-
-        mChart.setData(data);
-        mChart.invalidate();
-        mChart.animateY(800);
-    }
-}

MPChartExample/src/com/xxmassdeveloper/mpchartexample/custom/MyAxisValueFormatter.java

@@ -1,21 +0,0 @@
-package com.xxmassdeveloper.mpchartexample.custom;
-
-import com.github.mikephil.charting.components.AxisBase;
-import com.github.mikephil.charting.formatter.IAxisValueFormatter;
-
-import java.text.DecimalFormat;
-
-public class MyAxisValueFormatter implements IAxisValueFormatter
-{
-
-    private DecimalFormat mFormat;
-
-    public MyAxisValueFormatter() {
-        mFormat = new DecimalFormat("###,###,###,##0.0");
-    }
-
-    @Override
-    public String getFormattedValue(float value, AxisBase axis) {
-        return mFormat.format(value) + " $";
-    }
-}

MPChartExample/src/com/xxmassdeveloper/mpchartexample/custom/MyEasingFunction.java

@@ -1,18 +0,0 @@
-
-package com.xxmassdeveloper.mpchartexample.custom;
-
-import com.github.mikephil.charting.animation.EasingFunction;
-
-/**
- * Example of a custom made animation EasingFunction.
- * 
- * @author Philipp Jahoda
- */
-public class MyEasingFunction implements EasingFunction {
-
-    @Override
-    public float getInterpolation(float input) {
-        // do awesome stuff here, this is just linear easing
-        return input;
-    }
-}

MPChartExample/src/com/xxmassdeveloper/mpchartexample/custom/MyValueFormatter.java

@@ -1,22 +0,0 @@
-package com.xxmassdeveloper.mpchartexample.custom;
-
-import com.github.mikephil.charting.data.Entry;
-import com.github.mikephil.charting.formatter.IValueFormatter;
-import com.github.mikephil.charting.utils.ViewPortHandler;
-
-import java.text.DecimalFormat;
-
-public class MyValueFormatter implements IValueFormatter
-{
-
-    private DecimalFormat mFormat;
-    
-    public MyValueFormatter() {
-        mFormat = new DecimalFormat("###,###,###,##0.0");
-    }
-
-    @Override
-    public String getFormattedValue(float value, Entry entry, int dataSetIndex, ViewPortHandler viewPortHandler) {
-        return mFormat.format(value) + " $";
-    }
-}

MPChartExample/src/com/xxmassdeveloper/mpchartexample/custom/RealmDemoData.java

@@ -1,180 +0,0 @@
-package com.xxmassdeveloper.mpchartexample.custom;
-
-
-import io.realm.RealmList;
-import io.realm.RealmObject;
-
-/**
- * Demo class that encapsulates data stored in realm.io database.
- * This class represents data suitable for all chart-types.
- */
-public class RealmDemoData extends RealmObject {
-
-    private float yValue;
-    private float xValue;
-
-    private float open, close, high, low;
-
-    private float bubbleSize;
-
-    private RealmList<RealmFloat> stackValues;
-
-    private String someStringField;
-
-    /**
-     * label for pie entries
-     */
-    private String label;
-
-    // ofc there could me more fields here...
-
-    public RealmDemoData() {
-
-    }
-
-    public RealmDemoData(float yValue) {
-        this.yValue = yValue;
-    }
-
-    public RealmDemoData(float xValue, float yValue) {
-        this.xValue = xValue;
-        this.yValue = yValue;
-    }
-
-    /**
-     * Constructor for stacked bars.
-     *
-     * @param xValue
-     * @param stackValues
-     */
-    public RealmDemoData(float xValue, float[] stackValues) {
-        this.xValue = xValue;
-        this.stackValues = new RealmList<RealmFloat>();
-
-        for (float val : stackValues) {
-            this.stackValues.add(new RealmFloat(val));
-        }
-    }
-
-    /**
-     * Constructor for candles.
-     *
-     * @param xValue
-     * @param high
-     * @param low
-     * @param open
-     * @param close
-     */
-    public RealmDemoData(float xValue, float high, float low, float open, float close) {
-        this.yValue = (high + low) / 2f;
-        this.high = high;
-        this.low = low;
-        this.open = open;
-        this.close = close;
-        this.xValue = xValue;
-    }
-
-    /**
-     * Constructor for bubbles.
-     *
-     * @param xValue
-     * @param yValue
-     * @param bubbleSize
-     */
-    public RealmDemoData(float xValue, float yValue, float bubbleSize) {
-        this.xValue = xValue;
-        this.yValue = yValue;
-        this.bubbleSize = bubbleSize;
-    }
-
-    /**
-     * Constructor for pie chart.
-     *
-     * @param yValue
-     * @param label
-     */
-    public RealmDemoData(float yValue, String label) {
-        this.yValue = yValue;
-        this.label = label;
-    }
-
-    public float getyValue() {
-        return yValue;
-    }
-
-    public void setyValue(float yValue) {
-        this.yValue = yValue;
-    }
-
-    public float getxValue() {
-        return xValue;
-    }
-
-    public void setxValue(float xValue) {
-        this.xValue = xValue;
-    }
-
-    public RealmList<RealmFloat> getStackValues() {
-        return stackValues;
-    }
-
-    public void setStackValues(RealmList<RealmFloat> stackValues) {
-        this.stackValues = stackValues;
-    }
-
-    public float getOpen() {
-        return open;
-    }
-
-    public void setOpen(float open) {
-        this.open = open;
-    }
-
-    public float getClose() {
-        return close;
-    }
-
-    public void setClose(float close) {
-        this.close = close;
-    }
-
-    public float getHigh() {
-        return high;
-    }
-
-    public void setHigh(float high) {
-        this.high = high;
-    }
-
-    public float getLow() {
-        return low;
-    }
-
-    public void setLow(float low) {
-        this.low = low;
-    }
-
-    public float getBubbleSize() {
-        return bubbleSize;
-    }
-
-    public void setBubbleSize(float bubbleSize) {
-        this.bubbleSize = bubbleSize;
-    }
-
-    public String getSomeStringField() {
-        return someStringField;
-    }
-
-    public void setSomeStringField(String someStringField) {
-        this.someStringField = someStringField;
-    }
-
-    public String getLabel() {
-        return label;
-    }
-
-    public void setLabel(String label) {
-        this.label = label;
-    }
-}

MPChartExample/src/com/xxmassdeveloper/mpchartexample/custom/RealmFloat.java

@@ -1,27 +0,0 @@
-package com.xxmassdeveloper.mpchartexample.custom;
-
-import io.realm.RealmObject;
-
-/**
- * Created by Philipp Jahoda on 09/11/15.
- */
-public class RealmFloat extends RealmObject {
-
-    private float floatValue;
-
-    public RealmFloat() {
-
-    }
-
-    public RealmFloat(float floatValue) {
-        this.floatValue = floatValue;
-    }
-
-    public float getFloatValue() {
-        return floatValue;
-    }
-
-    public void setFloatValue(float value) {
-        this.floatValue = value;
-    }
-}

MPChartExample/src/com/xxmassdeveloper/mpchartexample/notimportant/ContentItem.java

@@ -1,16 +0,0 @@
-package com.xxmassdeveloper.mpchartexample.notimportant;
-
-/**
- * Created by Philipp Jahoda on 07/12/15.
- */
-public class ContentItem {
-
-    String name;
-    String desc;
-    boolean isNew = false;
-
-    public ContentItem(String n, String d) {
-        name = n;
-        desc = d;
-    }
-}

MPChartExample/src/com/xxmassdeveloper/mpchartexample/notimportant/DemoBase.java

@@ -1,50 +0,0 @@
-
-package com.xxmassdeveloper.mpchartexample.notimportant;
-
-import android.graphics.Typeface;
-import android.os.Bundle;
-import android.renderscript.Type;
-import android.support.annotation.Nullable;
-import android.support.v4.app.FragmentActivity;
-
-import com.xxmassdeveloper.mpchartexample.R;
-
-/**
- * Baseclass of all Activities of the Demo Application.
- * 
- * @author Philipp Jahoda
- */
-public abstract class DemoBase extends FragmentActivity {
-
-    protected String[] mMonths = new String[] {
-            "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Okt", "Nov", "Dec"
-    };
-
-    protected String[] mParties = new String[] {
-            "Party A", "Party B", "Party C", "Party D", "Party E", "Party F", "Party G", "Party H",
-            "Party I", "Party J", "Party K", "Party L", "Party M", "Party N", "Party O", "Party P",
-            "Party Q", "Party R", "Party S", "Party T", "Party U", "Party V", "Party W", "Party X",
-            "Party Y", "Party Z"
-    };
-
-    protected Typeface mTfRegular;
-    protected Typeface mTfLight;
-
-    @Override
-    protected void onCreate(@Nullable Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-
-        mTfRegular = Typeface.createFromAsset(getAssets(), "OpenSans-Regular.ttf");
-        mTfLight = Typeface.createFromAsset(getAssets(), "OpenSans-Light.ttf");
-    }
-
-    protected float getRandom(float range, float startsfrom) {
-        return (float) (Math.random() * range) + startsfrom;
-    }
-
-    @Override
-    public void onBackPressed() {
-        super.onBackPressed();
-        overridePendingTransition(R.anim.move_left_in_activity, R.anim.move_right_out_activity);
-    }
-}

MPChartExample/src/com/xxmassdeveloper/mpchartexample/notimportant/MyAdapter.java

@@ -1,72 +0,0 @@
-package com.xxmassdeveloper.mpchartexample.notimportant;
-
-import android.content.Context;
-import android.graphics.Typeface;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.ArrayAdapter;
-import android.widget.TextView;
-
-import com.xxmassdeveloper.mpchartexample.R;
-
-import java.util.List;
-
-/**
- * Created by Philipp Jahoda on 07/12/15.
- */
-public class MyAdapter extends ArrayAdapter<ContentItem> {
-
-    private Typeface mTypeFaceLight;
-    private Typeface mTypeFaceRegular;
-
-    public MyAdapter(Context context, List<ContentItem> objects) {
-        super(context, 0, objects);
-
-        mTypeFaceLight = Typeface.createFromAsset(context.getAssets(), "OpenSans-Light.ttf");
-        mTypeFaceRegular = Typeface.createFromAsset(context.getAssets(), "OpenSans-Regular.ttf");
-    }
-
-    @Override
-    public View getView(int position, View convertView, ViewGroup parent) {
-
-        ContentItem c = getItem(position);
-
-        ViewHolder holder = null;
-
-        if (convertView == null) {
-
-            holder = new ViewHolder();
-
-            convertView = LayoutInflater.from(getContext()).inflate(R.layout.list_item, null);
-            holder.tvName = (TextView) convertView.findViewById(R.id.tvName);
-            holder.tvDesc = (TextView) convertView.findViewById(R.id.tvDesc);
-            holder.tvNew = (TextView) convertView.findViewById(R.id.tvNew);
-
-            convertView.setTag(holder);
-
-        } else {
-            holder = (ViewHolder) convertView.getTag();
-        }
-
-        holder.tvNew.setTypeface(mTypeFaceRegular);
-        holder.tvName.setTypeface(mTypeFaceLight);
-        holder.tvDesc.setTypeface(mTypeFaceLight);
-
-        holder.tvName.setText(c.name);
-        holder.tvDesc.setText(c.desc);
-
-        if(c.isNew)
-            holder.tvNew.setVisibility(View.VISIBLE);
-        else
-            holder.tvNew.setVisibility(View.GONE);
-
-        return convertView;
-    }
-
-    private class ViewHolder {
-
-        TextView tvName, tvDesc;
-        TextView tvNew;
-    }
-}

MPChartExample/src/com/xxmassdeveloper/mpchartexample/realm/RealmBaseActivity.java

@@ -1,202 +0,0 @@
-package com.xxmassdeveloper.mpchartexample.realm;
-
-import android.graphics.Color;
-import android.graphics.Typeface;
-import android.os.Bundle;
-
-import com.github.mikephil.charting.charts.BarLineChartBase;
-import com.github.mikephil.charting.charts.Chart;
-import com.github.mikephil.charting.components.XAxis;
-import com.github.mikephil.charting.components.YAxis;
-import com.github.mikephil.charting.data.ChartData;
-import com.github.mikephil.charting.formatter.PercentFormatter;
-import com.xxmassdeveloper.mpchartexample.custom.RealmDemoData;
-import com.xxmassdeveloper.mpchartexample.notimportant.DemoBase;
-
-import io.realm.Realm;
-import io.realm.RealmConfiguration;
-
-/**
- * Created by Philipp Jahoda on 05/11/15.
- */
-public abstract class RealmBaseActivity extends DemoBase {
-
-    protected Realm mRealm;
-
-    protected Typeface mTf;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setTitle("Realm.io Examples");
-    }
-
-    protected void setup(Chart<?> chart) {
-
-        mTf = Typeface.createFromAsset(getAssets(), "OpenSans-Regular.ttf");
-
-        // no description text
-        chart.getDescription().setEnabled(false);
-
-        // enable touch gestures
-        chart.setTouchEnabled(true);
-
-        if (chart instanceof BarLineChartBase) {
-
-            BarLineChartBase mChart = (BarLineChartBase) chart;
-
-            mChart.setDrawGridBackground(false);
-
-            // enable scaling and dragging
-            mChart.setDragEnabled(true);
-            mChart.setScaleEnabled(true);
-
-            // if disabled, scaling can be done on x- and y-axis separately
-            mChart.setPinchZoom(false);
-
-            YAxis leftAxis = mChart.getAxisLeft();
-            leftAxis.removeAllLimitLines(); // reset all limit lines to avoid overlapping lines
-            leftAxis.setTypeface(mTf);
-            leftAxis.setTextSize(8f);
-            leftAxis.setTextColor(Color.DKGRAY);
-            leftAxis.setValueFormatter(new PercentFormatter());
-
-            XAxis xAxis = mChart.getXAxis();
-            xAxis.setTypeface(mTf);
-            xAxis.setPosition(XAxis.XAxisPosition.BOTTOM);
-            xAxis.setTextSize(8f);
-            xAxis.setTextColor(Color.DKGRAY);
-
-            mChart.getAxisRight().setEnabled(false);
-        }
-    }
-
-    protected void styleData(ChartData data) {
-        data.setValueTypeface(mTf);
-        data.setValueTextSize(8f);
-        data.setValueTextColor(Color.DKGRAY);
-        data.setValueFormatter(new PercentFormatter());
-    }
-
-    @Override
-    protected void onResume() {
-        super.onResume();
-
-        // Create a RealmConfiguration that saves the Realm file in the app's "files" directory.
-        RealmConfiguration realmConfig = new RealmConfiguration.Builder().build();
-        Realm.setDefaultConfiguration(realmConfig);
-
-        mRealm = Realm.getDefaultInstance();
-    }
-
-    @Override
-    protected void onPause() {
-        super.onPause();
-        mRealm.close();
-    }
-
-    protected void writeToDB(int objectCount) {
-
-        mRealm.beginTransaction();
-
-        mRealm.delete(RealmDemoData.class);
-
-        for (int i = 0; i < objectCount; i++) {
-
-            float value = 40f + (float) (Math.random() * 60f);
-
-            RealmDemoData d = new RealmDemoData(i, value);
-            mRealm.copyToRealm(d);
-        }
-
-        mRealm.commitTransaction();
-    }
-
-    protected void writeToDBStack(int objectCount) {
-
-        mRealm.beginTransaction();
-
-        mRealm.delete(RealmDemoData.class);
-
-        for (int i = 0; i < objectCount; i++) {
-
-            float val1 = 34f + (float) (Math.random() * 12.0f);
-            float val2 = 34f + (float) (Math.random() * 12.0f);
-            float[] stack = new float[]{val1, val2, 100 - val1 - val2};
-
-            RealmDemoData d = new RealmDemoData(i, stack);
-            mRealm.copyToRealm(d);
-        }
-
-        mRealm.commitTransaction();
-    }
-
-    protected void writeToDBCandle(int objectCount) {
-
-        mRealm.beginTransaction();
-
-        mRealm.delete(RealmDemoData.class);
-
-        for (int i = 0; i < objectCount; i++) {
-
-            float mult = 50;
-            float val = (float) (Math.random() * 40) + mult;
-
-            float high = (float) (Math.random() * 9) + 8f;
-            float low = (float) (Math.random() * 9) + 8f;
-
-            float open = (float) (Math.random() * 6) + 1f;
-            float close = (float) (Math.random() * 6) + 1f;
-
-            boolean even = i % 2 == 0;
-
-            RealmDemoData d = new RealmDemoData(i, val + high, val - low, even ? val + open : val - open,
-                    even ? val - close : val + close);
-
-            mRealm.copyToRealm(d);
-        }
-
-        mRealm.commitTransaction();
-    }
-
-    protected void writeToDBBubble(int objectCount) {
-
-        mRealm.beginTransaction();
-
-        mRealm.delete(RealmDemoData.class);
-
-        for (int i = 0; i < objectCount; i++) {
-
-            float value = 30f + (float) (Math.random() * 100.0);
-            float size = 15f + (float) (Math.random() * 20.0);
-
-            RealmDemoData d = new RealmDemoData(i, value, size);
-            mRealm.copyToRealm(d);
-        }
-
-        mRealm.commitTransaction();
-    }
-
-    protected void writeToDBPie() {
-
-        mRealm.beginTransaction();
-
-        mRealm.delete(RealmDemoData.class);
-
-        float value1 = 15f + (float) (Math.random() * 8f);
-        float value2 = 15f + (float) (Math.random() * 8f);
-        float value3 = 15f + (float) (Math.random() * 8f);
-        float value4 = 15f + (float) (Math.random() * 8f);
-        float value5 = 100f - value1 - value2 - value3 - value4;
-
-        float[] values = new float[]{value1, value2, value3, value4, value5};
-        String[] labels = new String[]{"iOS", "Android", "WP 10", "BlackBerry", "Other"};
-
-        for (int i = 0; i < values.length; i++) {
-            RealmDemoData d = new RealmDemoData(values[i], labels[i]);
-            mRealm.copyToRealm(d);
-        }
-
-        mRealm.commitTransaction();
-    }
-}

MPChartExample/src/com/xxmassdeveloper/mpchartexample/realm/RealmDatabaseActivityBar.java

@@ -1,69 +0,0 @@
-package com.xxmassdeveloper.mpchartexample.realm;
-
-import android.os.Bundle;
-import android.view.WindowManager;
-
-import com.github.mikephil.charting.animation.Easing;
-import com.github.mikephil.charting.charts.BarChart;
-import com.github.mikephil.charting.data.BarData;
-import com.github.mikephil.charting.data.realm.implementation.RealmBarDataSet;
-import com.github.mikephil.charting.interfaces.datasets.IBarDataSet;
-import com.github.mikephil.charting.utils.ColorTemplate;
-import com.xxmassdeveloper.mpchartexample.R;
-import com.xxmassdeveloper.mpchartexample.custom.RealmDemoData;
-
-import java.util.ArrayList;
-
-import io.realm.RealmResults;
-
-/**
- * Created by Philipp Jahoda on 21/10/15.
- */
-public class RealmDatabaseActivityBar extends RealmBaseActivity {
-
-    private BarChart mChart;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
-                WindowManager.LayoutParams.FLAG_FULLSCREEN);
-        setContentView(R.layout.activity_barchart_noseekbar);
-
-        mChart = (BarChart) findViewById(R.id.chart1);
-        setup(mChart);
-    }
-
-    @Override
-    protected void onResume() {
-        super.onResume(); // setup realm
-
-        // write some demo-data into the realm.io database
-        writeToDB(20);
-
-        // add data to the chart
-        setData();
-    }
-
-    private void setData() {
-
-        RealmResults<RealmDemoData> result = mRealm.where(RealmDemoData.class).findAll();
-
-        //RealmBarDataSet<RealmDemoData> set = new RealmBarDataSet<RealmDemoData>(result, "stackValues", "xIndex"); // normal entries
-        RealmBarDataSet<RealmDemoData> set = new RealmBarDataSet<RealmDemoData>(result, "xValue", "yValue"); // stacked entries
-        set.setColors(new int[] {ColorTemplate.rgb("#FF5722"), ColorTemplate.rgb("#03A9F4")});
-        set.setLabel("Realm BarDataSet");
-
-        ArrayList<IBarDataSet> dataSets = new ArrayList<IBarDataSet>();
-        dataSets.add(set); // add the dataset
-
-        // create a data object with the dataset list
-        BarData data = new BarData(dataSets);
-        styleData(data);
-
-        // set data
-        mChart.setData(data);
-        mChart.setFitBars(true);
-        mChart.animateY(1400, Easing.EasingOption.EaseInOutQuart);
-    }
-}

MPChartExample/src/com/xxmassdeveloper/mpchartexample/realm/RealmDatabaseActivityBubble.java

@@ -1,71 +0,0 @@
-package com.xxmassdeveloper.mpchartexample.realm;
-
-import android.os.Bundle;
-import android.view.WindowManager;
-
-import com.github.mikephil.charting.animation.Easing;
-import com.github.mikephil.charting.charts.BubbleChart;
-import com.github.mikephil.charting.data.BubbleData;
-import com.github.mikephil.charting.data.realm.implementation.RealmBubbleDataSet;
-import com.github.mikephil.charting.interfaces.datasets.IBubbleDataSet;
-import com.github.mikephil.charting.utils.ColorTemplate;
-import com.xxmassdeveloper.mpchartexample.R;
-import com.xxmassdeveloper.mpchartexample.custom.RealmDemoData;
-
-import java.util.ArrayList;
-
-import io.realm.RealmResults;
-
-/**
- * Created by Philipp Jahoda on 21/10/15.
- */
-public class RealmDatabaseActivityBubble extends RealmBaseActivity {
-
-    private BubbleChart mChart;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
-                WindowManager.LayoutParams.FLAG_FULLSCREEN);
-        setContentView(R.layout.activity_bubblechart_noseekbar);
-
-        mChart = (BubbleChart) findViewById(R.id.chart1);
-        setup(mChart);
-
-        mChart.getXAxis().setDrawGridLines(false);
-        mChart.getAxisLeft().setDrawGridLines(false);
-        mChart.setPinchZoom(true);
-    }
-
-    @Override
-    protected void onResume() {
-        super.onResume(); // setup realm
-
-        // write some demo-data into the realm.io database
-        writeToDBBubble(10);
-
-        // add data to the chart
-        setData();
-    }
-
-    private void setData() {
-
-        RealmResults<RealmDemoData> result = mRealm.where(RealmDemoData.class).findAll();
-
-        RealmBubbleDataSet<RealmDemoData> set = new RealmBubbleDataSet<RealmDemoData>(result, "xValue", "yValue", "bubbleSize");
-        set.setLabel("Realm BubbleDataSet");
-        set.setColors(ColorTemplate.COLORFUL_COLORS, 110);
-
-        ArrayList<IBubbleDataSet> dataSets = new ArrayList<IBubbleDataSet>();
-        dataSets.add(set); // add the dataset
-
-        // create a data object with the dataset list
-        BubbleData data = new BubbleData(dataSets);
-        styleData(data);
-
-        // set data
-        mChart.setData(data);
-        mChart.animateY(1400, Easing.EasingOption.EaseInOutQuart);
-    }
-}

MPChartExample/src/com/xxmassdeveloper/mpchartexample/realm/RealmDatabaseActivityCandle.java

@@ -1,77 +0,0 @@
-package com.xxmassdeveloper.mpchartexample.realm;
-
-import android.graphics.Color;
-import android.graphics.Paint;
-import android.os.Bundle;
-import android.view.WindowManager;
-
-import com.github.mikephil.charting.animation.Easing;
-import com.github.mikephil.charting.charts.CandleStickChart;
-import com.github.mikephil.charting.data.CandleData;
-import com.github.mikephil.charting.data.realm.implementation.RealmCandleDataSet;
-import com.github.mikephil.charting.interfaces.datasets.ICandleDataSet;
-import com.xxmassdeveloper.mpchartexample.R;
-import com.xxmassdeveloper.mpchartexample.custom.RealmDemoData;
-
-import java.util.ArrayList;
-
-import io.realm.RealmResults;
-
-/**
- * Created by Philipp Jahoda on 21/10/15.
- */
-public class RealmDatabaseActivityCandle extends RealmBaseActivity {
-
-    private CandleStickChart mChart;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
-                WindowManager.LayoutParams.FLAG_FULLSCREEN);
-        setContentView(R.layout.activity_candlechart_noseekbar);
-
-        mChart = (CandleStickChart) findViewById(R.id.chart1);
-        setup(mChart);
-
-        mChart.getAxisLeft().setDrawGridLines(false);
-        mChart.getXAxis().setDrawGridLines(false);
-    }
-
-    @Override
-    protected void onResume() {
-        super.onResume(); // setup realm
-
-        // write some demo-data into the realm.io database
-        writeToDBCandle(50);
-
-        // add data to the chart
-        setData();
-    }
-
-    private void setData() {
-
-        RealmResults<RealmDemoData> result = mRealm.where(RealmDemoData.class).findAll();
-
-        RealmCandleDataSet<RealmDemoData> set = new RealmCandleDataSet<RealmDemoData>(result, "xValue", "high", "low", "open", "close");
-        set.setLabel("Realm CandleDataSet");
-        set.setShadowColor(Color.DKGRAY);
-        set.setShadowWidth(0.7f);
-        set.setDecreasingColor(Color.RED);
-        set.setDecreasingPaintStyle(Paint.Style.FILL);
-        set.setIncreasingColor(Color.rgb(122, 242, 84));
-        set.setIncreasingPaintStyle(Paint.Style.STROKE);
-        set.setNeutralColor(Color.BLUE);
-
-        ArrayList<ICandleDataSet> dataSets = new ArrayList<ICandleDataSet>();
-        dataSets.add(set); // add the dataset
-
-        // create a data object with the dataset list
-        CandleData data = new CandleData(dataSets);
-        styleData(data);
-
-        // set data
-        mChart.setData(data);
-        mChart.animateY(1400, Easing.EasingOption.EaseInOutQuart);
-    }
-}

MPChartExample/src/com/xxmassdeveloper/mpchartexample/realm/RealmDatabaseActivityHorizontalBar.java

@@ -1,74 +0,0 @@
-package com.xxmassdeveloper.mpchartexample.realm;
-
-import android.graphics.Color;
-import android.os.Bundle;
-import android.view.WindowManager;
-
-import com.github.mikephil.charting.animation.Easing;
-import com.github.mikephil.charting.charts.HorizontalBarChart;
-import com.github.mikephil.charting.data.BarData;
-import com.github.mikephil.charting.data.realm.implementation.RealmBarDataSet;
-import com.github.mikephil.charting.interfaces.datasets.IBarDataSet;
-import com.github.mikephil.charting.utils.ColorTemplate;
-import com.xxmassdeveloper.mpchartexample.R;
-import com.xxmassdeveloper.mpchartexample.custom.RealmDemoData;
-
-import java.util.ArrayList;
-
-import io.realm.RealmResults;
-
-/**
- * Created by Philipp Jahoda on 21/10/15.
- */
-public class RealmDatabaseActivityHorizontalBar extends RealmBaseActivity {
-
-    private HorizontalBarChart mChart;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
-                WindowManager.LayoutParams.FLAG_FULLSCREEN);
-        setContentView(R.layout.activity_horizontalbarchart_noseekbar);
-
-        mChart = (HorizontalBarChart) findViewById(R.id.chart1);
-        setup(mChart);
-
-        mChart.getAxisLeft().setAxisMinimum(0f);
-        mChart.setDrawValueAboveBar(false);
-    }
-
-    @Override
-    protected void onResume() {
-        super.onResume(); // setup realm
-
-        // write some demo-data into the realm.io database
-        writeToDBStack(50);
-
-        // add data to the chart
-        setData();
-    }
-
-    private void setData() {
-
-        RealmResults<RealmDemoData> result = mRealm.where(RealmDemoData.class).findAll();
-
-        //RealmBarDataSet<RealmDemoData> set = new RealmBarDataSet<RealmDemoData>(result, "stackValues", "xIndex"); // normal entries
-        RealmBarDataSet<RealmDemoData> set = new RealmBarDataSet<RealmDemoData>(result, "xValue", "stackValues", "floatValue"); // stacked entries
-        set.setColors(new int[]{ColorTemplate.rgb("#8BC34A"), ColorTemplate.rgb("#FFC107"), ColorTemplate.rgb("#9E9E9E")});
-        set.setLabel("Mobile OS distribution");
-        set.setStackLabels(new String[]{"iOS", "Android", "Other"});
-
-        ArrayList<IBarDataSet> dataSets = new ArrayList<IBarDataSet>();
-        dataSets.add(set); // add the dataset
-
-        // create a data object with the dataset list
-        BarData data = new BarData(dataSets);
-        styleData(data);
-        data.setValueTextColor(Color.WHITE);
-
-        // set data
-        mChart.setData(data);
-        mChart.animateY(1400, Easing.EasingOption.EaseInOutQuart);
-    }
-}

MPChartExample/src/com/xxmassdeveloper/mpchartexample/realm/RealmDatabaseActivityLine.java

@@ -1,78 +0,0 @@
-package com.xxmassdeveloper.mpchartexample.realm;
-
-import android.os.Bundle;
-import android.view.WindowManager;
-
-import com.github.mikephil.charting.animation.Easing;
-import com.github.mikephil.charting.charts.LineChart;
-import com.github.mikephil.charting.data.LineData;
-import com.github.mikephil.charting.data.LineDataSet;
-import com.github.mikephil.charting.data.realm.implementation.RealmLineDataSet;
-import com.github.mikephil.charting.interfaces.datasets.ILineDataSet;
-import com.github.mikephil.charting.utils.ColorTemplate;
-import com.xxmassdeveloper.mpchartexample.R;
-import com.xxmassdeveloper.mpchartexample.custom.RealmDemoData;
-
-import java.util.ArrayList;
-
-import io.realm.RealmResults;
-
-/**
- * Created by Philipp Jahoda on 21/10/15.
- */
-public class RealmDatabaseActivityLine extends RealmBaseActivity {
-
-    private LineChart mChart;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
-                WindowManager.LayoutParams.FLAG_FULLSCREEN);
-        setContentView(R.layout.activity_linechart_noseekbar);
-
-        mChart = (LineChart) findViewById(R.id.chart1);
-        setup(mChart);
-
-        mChart.getAxisLeft().setAxisMaximum(150f);
-        mChart.getAxisLeft().setAxisMinimum(0f);
-        mChart.getAxisLeft().setDrawGridLines(false);
-        mChart.getXAxis().setDrawGridLines(false);
-    }
-
-    @Override
-    protected void onResume() {
-        super.onResume(); // setup realm
-
-        // write some demo-data into the realm.io database
-        writeToDB(40);
-
-        // add data to the chart
-        setData();
-    }
-
-    private void setData() {
-
-        RealmResults<RealmDemoData> result = mRealm.where(RealmDemoData.class).findAll();
-
-        RealmLineDataSet<RealmDemoData> set = new RealmLineDataSet<RealmDemoData>(result, "xValue", "yValue");
-        set.setMode(LineDataSet.Mode.CUBIC_BEZIER);
-        set.setLabel("Realm LineDataSet");
-        set.setDrawCircleHole(false);
-        set.setColor(ColorTemplate.rgb("#FF5722"));
-        set.setCircleColor(ColorTemplate.rgb("#FF5722"));
-        set.setLineWidth(1.8f);
-        set.setCircleRadius(3.6f);
-
-        ArrayList<ILineDataSet> dataSets = new ArrayList<ILineDataSet>();
-        dataSets.add(set); // add the dataset
-
-        // create a data object with the dataset list
-        LineData data = new LineData(dataSets);
-        styleData(data);
-
-        // set data
-        mChart.setData(data);
-        mChart.animateY(1400, Easing.EasingOption.EaseInOutQuart);
-    }
-}

MPChartExample/src/com/xxmassdeveloper/mpchartexample/realm/RealmDatabaseActivityPie.java

@@ -1,82 +0,0 @@
-package com.xxmassdeveloper.mpchartexample.realm;
-
-import android.graphics.Color;
-import android.graphics.Typeface;
-import android.os.Bundle;
-import android.text.SpannableString;
-import android.text.style.ForegroundColorSpan;
-import android.text.style.RelativeSizeSpan;
-import android.text.style.StyleSpan;
-import android.view.WindowManager;
-
-import com.github.mikephil.charting.charts.PieChart;
-import com.github.mikephil.charting.data.PieData;
-import com.github.mikephil.charting.data.realm.implementation.RealmPieDataSet;
-import com.github.mikephil.charting.utils.ColorTemplate;
-import com.xxmassdeveloper.mpchartexample.R;
-import com.xxmassdeveloper.mpchartexample.custom.RealmDemoData;
-
-import io.realm.RealmResults;
-
-/**
- * Created by Philipp Jahoda on 21/10/15.
- */
-public class RealmDatabaseActivityPie extends RealmBaseActivity {
-
-    private PieChart mChart;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
-                WindowManager.LayoutParams.FLAG_FULLSCREEN);
-        setContentView(R.layout.activity_piechart_noseekbar);
-
-        mChart = (PieChart) findViewById(R.id.chart1);
-        setup(mChart);
-
-        mChart.setCenterText(generateCenterSpannableText());
-    }
-
-    @Override
-    protected void onResume() {
-        super.onResume(); // setup realm
-
-        // write some demo-data into the realm.io database
-        writeToDBPie();
-
-        // add data to the chart
-        setData();
-    }
-
-    private void setData() {
-
-        RealmResults<RealmDemoData> result = mRealm.where(RealmDemoData.class).findAll();
-
-        RealmPieDataSet<RealmDemoData> set = new RealmPieDataSet<RealmDemoData>(result, "yValue", "label");
-        set.setColors(ColorTemplate.VORDIPLOM_COLORS);
-        set.setLabel("Example market share");
-        set.setSliceSpace(2);
-
-        // create a data object with the dataset list
-        PieData data = new PieData(set);
-        styleData(data);
-        data.setValueTextColor(Color.WHITE);
-        data.setValueTextSize(12f);
-
-        // set data
-        mChart.setData(data);
-        mChart.animateY(1400);
-    }
-
-    private SpannableString generateCenterSpannableText() {
-
-        SpannableString s = new SpannableString("Realm.io\nmobile database");
-        s.setSpan(new ForegroundColorSpan(Color.rgb(240, 115, 126)), 0, 8, 0);
-        s.setSpan(new RelativeSizeSpan(2.2f), 0, 8, 0);
-        s.setSpan(new StyleSpan(Typeface.ITALIC), 9, s.length(), 0);
-        s.setSpan(new ForegroundColorSpan(ColorTemplate.getHoloBlue()), 9, s.length(), 0);
-        s.setSpan(new RelativeSizeSpan(0.85f), 9, s.length(), 0);
-        return s;
-    }
-}

MPChartExample/src/com/xxmassdeveloper/mpchartexample/realm/RealmDatabaseActivityRadar.java

@@ -1,78 +0,0 @@
-package com.xxmassdeveloper.mpchartexample.realm;
-
-import android.graphics.Color;
-import android.os.Bundle;
-import android.view.WindowManager;
-
-import com.github.mikephil.charting.charts.RadarChart;
-import com.github.mikephil.charting.data.RadarData;
-import com.github.mikephil.charting.data.realm.implementation.RealmRadarDataSet;
-import com.github.mikephil.charting.interfaces.datasets.IRadarDataSet;
-import com.github.mikephil.charting.utils.ColorTemplate;
-import com.xxmassdeveloper.mpchartexample.R;
-import com.xxmassdeveloper.mpchartexample.custom.RealmDemoData;
-
-import java.util.ArrayList;
-
-import io.realm.RealmResults;
-
-/**
- * Created by Philipp Jahoda on 21/10/15.
- */
-public class RealmDatabaseActivityRadar extends RealmBaseActivity {
-
-    private RadarChart mChart;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
-                WindowManager.LayoutParams.FLAG_FULLSCREEN);
-        setContentView(R.layout.activity_radarchart_noseekbar);
-
-        mChart = (RadarChart) findViewById(R.id.chart1);
-        setup(mChart);
-
-        mChart.getYAxis().setEnabled(false);
-        mChart.getXAxis().setEnabled(false);
-        mChart.setWebAlpha(180);
-        mChart.setWebColorInner(Color.DKGRAY);
-        mChart.setWebColor(Color.GRAY);
-    }
-
-    @Override
-    protected void onResume() {
-        super.onResume(); // setup realm
-
-        // write some demo-data into the realm.io database
-        writeToDB(7);
-
-        // add data to the chart
-        setData();
-    }
-
-    private void setData() {
-
-        RealmResults<RealmDemoData> result = mRealm.where(RealmDemoData.class).findAll();
-
-        //RealmBarDataSet<RealmDemoData> set = new RealmBarDataSet<RealmDemoData>(result, "stackValues", "xIndex"); // normal entries
-        RealmRadarDataSet<RealmDemoData> set = new RealmRadarDataSet<RealmDemoData>(result, "yValue"); // stacked entries
-        set.setLabel("Realm RadarDataSet");
-        set.setDrawFilled(true);
-        set.setColor(ColorTemplate.rgb("#009688"));
-        set.setFillColor(ColorTemplate.rgb("#009688"));
-        set.setFillAlpha(130);
-        set.setLineWidth(2f);
-
-        ArrayList<IRadarDataSet> dataSets = new ArrayList<IRadarDataSet>();
-        dataSets.add(set); // add the dataset
-
-        // create a data object with the dataset list
-        RadarData data = new RadarData(dataSets);
-        styleData(data);
-
-        // set data
-        mChart.setData(data);
-        mChart.animateY(1400);
-    }
-}

MPChartExample/src/com/xxmassdeveloper/mpchartexample/realm/RealmDatabaseActivityScatter.java

@@ -1,73 +0,0 @@
-package com.xxmassdeveloper.mpchartexample.realm;
-
-import android.os.Bundle;
-import android.view.WindowManager;
-
-import com.github.mikephil.charting.animation.Easing;
-import com.github.mikephil.charting.charts.ScatterChart;
-import com.github.mikephil.charting.data.ScatterData;
-import com.github.mikephil.charting.data.realm.implementation.RealmScatterDataSet;
-import com.github.mikephil.charting.interfaces.datasets.IScatterDataSet;
-import com.github.mikephil.charting.utils.ColorTemplate;
-import com.xxmassdeveloper.mpchartexample.R;
-import com.xxmassdeveloper.mpchartexample.custom.RealmDemoData;
-
-import java.util.ArrayList;
-
-import io.realm.RealmResults;
-
-/**
- * Created by Philipp Jahoda on 21/10/15.
- */
-public class RealmDatabaseActivityScatter extends RealmBaseActivity {
-
-    private ScatterChart mChart;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
-                WindowManager.LayoutParams.FLAG_FULLSCREEN);
-        setContentView(R.layout.activity_scatterchart_noseekbar);
-
-        mChart = (ScatterChart) findViewById(R.id.chart1);
-        setup(mChart);
-
-        mChart.getAxisLeft().setDrawGridLines(false);
-        mChart.getXAxis().setDrawGridLines(false);
-        mChart.setPinchZoom(true);
-    }
-
-    @Override
-    protected void onResume() {
-        super.onResume(); // setup realm
-
-        // write some demo-data into the realm.io database
-        writeToDB(45);
-
-        // add data to the chart
-        setData();
-    }
-
-    private void setData() {
-
-        RealmResults<RealmDemoData> result = mRealm.where(RealmDemoData.class).findAll();
-
-        RealmScatterDataSet<RealmDemoData> set = new RealmScatterDataSet<RealmDemoData>(result, "xValue", "yValue");
-        set.setLabel("Realm ScatterDataSet");
-        set.setScatterShapeSize(9f);
-        set.setColor(ColorTemplate.rgb("#CDDC39"));
-        set.setScatterShape(ScatterChart.ScatterShape.CIRCLE);
-
-        ArrayList<IScatterDataSet> dataSets = new ArrayList<IScatterDataSet>();
-        dataSets.add(set); // add the dataset
-
-        // create a data object with the dataset list
-        ScatterData data = new ScatterData(dataSets);
-        styleData(data);
-
-        // set data
-        mChart.setData(data);
-        mChart.animateY(1400, Easing.EasingOption.EaseInOutQuart);
-    }
-}

MPChartExample/src/com/xxmassdeveloper/mpchartexample/realm/RealmMainActivity.java

@@ -1,133 +0,0 @@
-package com.xxmassdeveloper.mpchartexample.realm;
-
-import android.content.Intent;
-import android.net.Uri;
-import android.os.Bundle;
-import android.view.Menu;
-import android.view.MenuItem;
-import android.view.View;
-import android.view.WindowManager;
-import android.widget.AdapterView;
-import android.widget.ListView;
-
-import com.xxmassdeveloper.mpchartexample.R;
-import com.xxmassdeveloper.mpchartexample.notimportant.ContentItem;
-import com.xxmassdeveloper.mpchartexample.notimportant.DemoBase;
-import com.xxmassdeveloper.mpchartexample.notimportant.MyAdapter;
-
-import java.util.ArrayList;
-
-import io.realm.Realm;
-import io.realm.RealmConfiguration;
-
-/**
- * Created by Philipp Jahoda on 07/12/15.
- */
-public class RealmMainActivity extends DemoBase implements AdapterView.OnItemClickListener {
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
-                WindowManager.LayoutParams.FLAG_FULLSCREEN);
-        setContentView(R.layout.activity_main);
-
-        setTitle("Realm.io Examples");
-
-        ArrayList<ContentItem> objects = new ArrayList<ContentItem>();
-
-        objects.add(new ContentItem("Line Chart", "Creating a LineChart with Realm.io database"));
-        objects.add(new ContentItem("Bar Chart",
-                "Creating a BarChart with Realm.io database"));
-        objects.add(new ContentItem("Horizontal Bar Chart",
-                "Creating a HorizontalBarChart with Realm.io database"));
-        objects.add(new ContentItem("Scatter Chart",
-                "Creating a ScatterChart with Realm.io database"));
-        objects.add(new ContentItem("Candle Stick Chart", "Creating a CandleStickChart with Realm.io database"));
-        objects.add(new ContentItem("Bubble Chart", "Creating a BubbleChart with Realm.io database"));
-        objects.add(new ContentItem("Pie Chart", "Creating a PieChart with Realm.io database"));
-        objects.add(new ContentItem("Radar Chart", "Creating a RadarChart with Realm.io database"));
-        objects.add(new ContentItem("Realm Wiki", "This is the code related to the wiki entry about realm.io on the MPAndroidChart github page."));
-
-        MyAdapter adapter = new MyAdapter(this, objects);
-
-        ListView lv = (ListView) findViewById(R.id.listView1);
-        lv.setAdapter(adapter);
-
-        lv.setOnItemClickListener(this);
-
-        Realm.init(this);
-
-        // Create a RealmConfiguration that saves the Realm file in the app's "files" directory.
-        RealmConfiguration realmConfig = new RealmConfiguration.Builder().build();
-        Realm.setDefaultConfiguration(realmConfig);
-
-        Realm realm = Realm.getDefaultInstance();
-        realm.beginTransaction();
-        realm.deleteAll();
-        realm.commitTransaction();
-    }
-
-    @Override
-    public void onItemClick(AdapterView<?> av, View v, int pos, long arg3) {
-
-        Intent i;
-
-        switch (pos) {
-            case 0:
-                i = new Intent(this, RealmDatabaseActivityLine.class);
-                startActivity(i);
-                break;
-            case 1:
-                i = new Intent(this, RealmDatabaseActivityBar.class);
-                startActivity(i);
-                break;
-            case 2:
-                i = new Intent(this, RealmDatabaseActivityHorizontalBar.class);
-                startActivity(i);
-                break;
-            case 3:
-                i = new Intent(this, RealmDatabaseActivityScatter.class);
-                startActivity(i);
-                break;
-            case 4:
-                i = new Intent(this, RealmDatabaseActivityCandle.class);
-                startActivity(i);
-                break;
-            case 5:
-                i = new Intent(this, RealmDatabaseActivityBubble.class);
-                startActivity(i);
-                break;
-            case 6:
-                i = new Intent(this, RealmDatabaseActivityPie.class);
-                startActivity(i);
-                break;
-            case 7:
-                i = new Intent(this, RealmDatabaseActivityRadar.class);
-                startActivity(i);
-                break;
-            case 8:
-                i = new Intent(this, RealmWikiExample.class);
-                startActivity(i);
-                break;
-        }
-
-        overridePendingTransition(R.anim.move_right_in_activity, R.anim.move_left_out_activity);
-    }
-
-    @Override
-    public boolean onCreateOptionsMenu(Menu menu) {
-        getMenuInflater().inflate(R.menu.realm, menu);
-        return true;
-    }
-
-    @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
-
-        Intent i = new Intent(Intent.ACTION_VIEW);
-        i.setData(Uri.parse("https://realm.io"));
-        startActivity(i);
-
-        return super.onOptionsItemSelected(item);
-    }
-}

MPChartExample/src/com/xxmassdeveloper/mpchartexample/realm/RealmWikiExample.java

@@ -1,133 +0,0 @@
-package com.xxmassdeveloper.mpchartexample.realm;
-
-import android.os.Bundle;
-import android.view.WindowManager;
-
-import com.github.mikephil.charting.animation.Easing;
-import com.github.mikephil.charting.charts.BarChart;
-import com.github.mikephil.charting.charts.LineChart;
-import com.github.mikephil.charting.components.AxisBase;
-import com.github.mikephil.charting.data.BarData;
-import com.github.mikephil.charting.data.LineData;
-import com.github.mikephil.charting.data.LineDataSet;
-import com.github.mikephil.charting.data.realm.implementation.RealmBarDataSet;
-import com.github.mikephil.charting.data.realm.implementation.RealmLineDataSet;
-import com.github.mikephil.charting.formatter.IAxisValueFormatter;
-import com.github.mikephil.charting.interfaces.datasets.IBarDataSet;
-import com.github.mikephil.charting.interfaces.datasets.ILineDataSet;
-import com.github.mikephil.charting.utils.ColorTemplate;
-import com.xxmassdeveloper.mpchartexample.R;
-
-import java.util.ArrayList;
-
-import io.realm.RealmResults;
-
-/**
- * Created by Philipp Jahoda on 18/12/15.
- */
-public class RealmWikiExample extends RealmBaseActivity {
-
-    private LineChart lineChart;
-    private BarChart barChart;
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
-                WindowManager.LayoutParams.FLAG_FULLSCREEN);
-        setContentView(R.layout.activity_realm_wiki);
-
-        lineChart = (LineChart) findViewById(R.id.lineChart);
-        barChart = (BarChart) findViewById(R.id.barChart);
-        setup(lineChart);
-        setup(barChart);
-
-        lineChart.setExtraBottomOffset(5f);
-        barChart.setExtraBottomOffset(5f);
-
-        lineChart.getAxisLeft().setDrawGridLines(false);
-        lineChart.getXAxis().setDrawGridLines(false);
-        lineChart.getXAxis().setLabelCount(5);
-        lineChart.getXAxis().setGranularity(1f);
-        barChart.getAxisLeft().setDrawGridLines(false);
-        barChart.getXAxis().setDrawGridLines(false);
-        barChart.getXAxis().setLabelCount(5);
-        barChart.getXAxis().setGranularity(1f);
-    }
-
-    @Override
-    protected void onResume() {
-        super.onResume(); // setup realm
-
-        mRealm.beginTransaction();
-
-        // write some demo-data into the realm.io database
-        Score score1 = new Score(100f, 0f, "Peter");
-        mRealm.copyToRealm(score1);
-        Score score2 = new Score(110f, 1f, "Lisa");
-        mRealm.copyToRealm(score2);
-        Score score3 = new Score(130f, 2f, "Dennis");
-        mRealm.copyToRealm(score3);
-        Score score4 = new Score(70f, 3f, "Luke");
-        mRealm.copyToRealm(score4);
-        Score score5 = new Score(80f, 4f, "Sarah");
-        mRealm.copyToRealm(score5);
-
-        mRealm.commitTransaction();
-
-        // add data to the chart
-        setData();
-    }
-
-    private void setData() {
-
-        // LINE-CHART
-        final RealmResults<Score> results = mRealm.where(Score.class).findAll();
-
-
-        IAxisValueFormatter formatter = new IAxisValueFormatter() {
-            @Override
-            public String getFormattedValue(float value, AxisBase axis) {
-                return results.get((int) value).getPlayerName();
-            }
-        };
-
-        lineChart.getXAxis().setValueFormatter(formatter);
-        barChart.getXAxis().setValueFormatter(formatter);
-
-        RealmLineDataSet<Score> lineDataSet = new RealmLineDataSet<Score>(results, "scoreNr", "totalScore");
-        lineDataSet.setMode(LineDataSet.Mode.CUBIC_BEZIER);
-        lineDataSet.setLabel("Result Scores");
-        lineDataSet.setDrawCircleHole(false);
-        lineDataSet.setColor(ColorTemplate.rgb("#FF5722"));
-        lineDataSet.setCircleColor(ColorTemplate.rgb("#FF5722"));
-        lineDataSet.setLineWidth(1.8f);
-        lineDataSet.setCircleRadius(3.6f);
-
-        ArrayList<ILineDataSet> dataSets = new ArrayList<ILineDataSet>();
-        dataSets.add(lineDataSet);
-
-        LineData lineData = new LineData(dataSets);
-        styleData(lineData);
-
-        // set data
-        lineChart.setData(lineData);
-        lineChart.animateY(1400, Easing.EasingOption.EaseInOutQuart);
-
-
-        // BAR-CHART
-        RealmBarDataSet<Score> barDataSet = new RealmBarDataSet<Score>(results, "scoreNr", "totalScore");
-        barDataSet.setColors(new int[]{ColorTemplate.rgb("#FF5722"), ColorTemplate.rgb("#03A9F4")});
-        barDataSet.setLabel("Realm BarDataSet");
-
-        ArrayList<IBarDataSet> barDataSets = new ArrayList<IBarDataSet>();
-        barDataSets.add(barDataSet);
-
-        BarData barData = new BarData(barDataSets);
-        styleData(barData);
-
-        barChart.setData(barData);
-        barChart.setFitBars(true);
-        barChart.animateY(1400, Easing.EasingOption.EaseInOutQuart);
-    }
-}

MPChartExample/src/com/xxmassdeveloper/mpchartexample/realm/Score.java

@@ -1,51 +0,0 @@
-package com.xxmassdeveloper.mpchartexample.realm;
-
-
-import io.realm.RealmObject;
-
-/**
- * our data object
- */
-public class Score extends RealmObject {
-
-    private float totalScore;
-
-    private float scoreNr;
-
-    private String playerName;
-
-    public Score() {
-    }
-
-    public Score(float totalScore, float scoreNr, String playerName) {
-        this.scoreNr = scoreNr;
-        this.playerName = playerName;
-        this.totalScore = totalScore;
-    }
-
-    // all getters and setters...
-
-    public float getTotalScore() {
-        return totalScore;
-    }
-
-    public void setTotalScore(float totalScore) {
-        this.totalScore = totalScore;
-    }
-
-    public float getScoreNr() {
-        return scoreNr;
-    }
-
-    public void setScoreNr(float scoreNr) {
-        this.scoreNr = scoreNr;
-    }
-
-    public String getPlayerName() {
-        return playerName;
-    }
-
-    public void setPlayerName(String playerName) {
-        this.playerName = playerName;
-    }
-}

MPChartExample/src/main/AndroidManifest.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.xxmassdeveloper.mpchartexample">
+
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+
+    <application
+        android:allowBackup="false"
+        android:hardwareAccelerated="true"
+        android:icon="@drawable/ic_launcher"
+        android:label="@string/app_name"
+        android:theme="@style/AppTheme">
+        <activity
+            android:name="com.xxmassdeveloper.mpchartexample.notimportant.MainActivity"
+            android:label="@string/app_name" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <activity android:name="LineChartActivity1" />
+        <activity android:name="LineChartActivity2" />
+        <activity android:name="LineChartTime" />
+        <activity android:name="BarChartActivity" />
+		<activity android:name="HorizontalBarChartActivity" />
+        <activity android:name="HorizontalBarNegativeChartActivity" />
+        <activity android:name="PieChartActivity" />
+        <activity android:name="PiePolylineChartActivity" />
+        <activity android:name="MultiLineChartActivity" />
+        <activity android:name="BarChartActivityMultiDataset" />
+        <activity android:name="DrawChartActivity" />
+        <activity android:name="ScatterChartActivity" />
+        <activity android:name="BubbleChartActivity" />
+        <activity android:name=".fragments.SimpleChartDemo" />
+        <activity android:name="ListViewBarChartActivity" />
+        <activity android:name="ListViewMultiChartActivity" />
+        <activity android:name="StackedBarActivity" />
+        <activity android:name="AnotherBarActivity" />
+        <activity android:name="InvertedLineChartActivity" />
+        <activity android:name="CandleStickChartActivity" />
+        <activity android:name="CubicLineChartActivity" />
+        <activity android:name="RadarChartActivity" />
+        <activity android:name="LineChartActivityColored" />
+        <activity android:name="DynamicalAddingActivity" />
+        <activity android:name="RealtimeLineChartActivity" />
+        <activity android:name="CombinedChartActivity" />
+        <activity android:name="PerformanceLineChart" />
+        <activity android:name="BarChartActivitySinus" />
+        <activity android:name="ScrollViewActivity" />
+        <activity android:name="StackedBarActivityNegative" />
+        <activity android:name="BarChartPositiveNegative" />
+        <activity android:name="FilledLineActivity" />
+        <activity android:name="HalfPieChartActivity" />
+    </application>
+
+</manifest>

MPChartExample/src/main/java/com/xxmassdeveloper/mpchartexample/AnotherBarActivity.java

@@ -0,0 +1,214 @@
+
+package com.xxmassdeveloper.mpchartexample;
+
+import android.Manifest;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.net.Uri;
+import android.os.Bundle;
+import androidx.core.content.ContextCompat;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.WindowManager;
+import android.widget.SeekBar;
+import android.widget.SeekBar.OnSeekBarChangeListener;
+import android.widget.TextView;
+
+import com.github.mikephil.charting.charts.BarChart;
+import com.github.mikephil.charting.components.XAxis;
+import com.github.mikephil.charting.components.XAxis.XAxisPosition;
+import com.github.mikephil.charting.data.BarData;
+import com.github.mikephil.charting.data.BarDataSet;
+import com.github.mikephil.charting.data.BarEntry;
+import com.github.mikephil.charting.interfaces.datasets.IBarDataSet;
+import com.github.mikephil.charting.interfaces.datasets.IDataSet;
+import com.github.mikephil.charting.utils.ColorTemplate;
+import com.xxmassdeveloper.mpchartexample.notimportant.DemoBase;
+
+import java.util.ArrayList;
+
+public class AnotherBarActivity extends DemoBase implements OnSeekBarChangeListener {
+
+    private BarChart chart;
+    private SeekBar seekBarX, seekBarY;
+    private TextView tvX, tvY;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
+                WindowManager.LayoutParams.FLAG_FULLSCREEN);
+        setContentView(R.layout.activity_barchart);
+
+        setTitle("AnotherBarActivity");
+
+        tvX = findViewById(R.id.tvXMax);
+        tvY = findViewById(R.id.tvYMax);
+
+        seekBarX = findViewById(R.id.seekBar1);
+        seekBarX.setOnSeekBarChangeListener(this);
+
+        seekBarY = findViewById(R.id.seekBar2);
+        seekBarY.setOnSeekBarChangeListener(this);
+
+        chart = findViewById(R.id.chart1);
+
+        chart.getDescription().setEnabled(false);
+
+        // if more than 60 entries are displayed in the chart, no values will be
+        // drawn
+        chart.setMaxVisibleValueCount(60);
+
+        // scaling can now only be done on x- and y-axis separately
+        chart.setPinchZoom(false);
+
+        chart.setDrawBarShadow(false);
+        chart.setDrawGridBackground(false);
+
+        XAxis xAxis = chart.getXAxis();
+        xAxis.setPosition(XAxisPosition.BOTTOM);
+        xAxis.setDrawGridLines(false);
+
+        chart.getAxisLeft().setDrawGridLines(false);
+
+        // setting data
+        seekBarX.setProgress(10);
+        seekBarY.setProgress(100);
+
+        // add a nice and smooth animation
+        chart.animateY(1500);
+
+        chart.getLegend().setEnabled(false);
+    }
+
+    @Override
+    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+
+        tvX.setText(String.valueOf(seekBarX.getProgress()));
+        tvY.setText(String.valueOf(seekBarY.getProgress()));
+
+        ArrayList<BarEntry> values = new ArrayList<>();
+
+        for (int i = 0; i < seekBarX.getProgress(); i++) {
+            float multi = (seekBarY.getProgress() + 1);
+            float val = (float) (Math.random() * multi) + multi / 3;
+            values.add(new BarEntry(i, val));
+        }
+
+        BarDataSet set1;
+
+        if (chart.getData() != null &&
+                chart.getData().getDataSetCount() > 0) {
+            set1 = (BarDataSet) chart.getData().getDataSetByIndex(0);
+            set1.setValues(values);
+            chart.getData().notifyDataChanged();
+            chart.notifyDataSetChanged();
+        } else {
+            set1 = new BarDataSet(values, "Data Set");
+            set1.setColors(ColorTemplate.VORDIPLOM_COLORS);
+            set1.setDrawValues(false);
+
+            ArrayList<IBarDataSet> dataSets = new ArrayList<>();
+            dataSets.add(set1);
+
+            BarData data = new BarData(dataSets);
+            chart.setData(data);
+            chart.setFitBars(true);
+        }
+
+        chart.invalidate();
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.bar, menu);
+        menu.removeItem(R.id.actionToggleIcons);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+
+        switch (item.getItemId()) {
+            case R.id.viewGithub: {
+                Intent i = new Intent(Intent.ACTION_VIEW);
+                i.setData(Uri.parse("https://github.com/PhilJay/MPAndroidChart/blob/master/MPChartExample/src/com/xxmassdeveloper/mpchartexample/AnotherBarActivity.java"));
+                startActivity(i);
+                break;
+            }
+            case R.id.actionToggleValues: {
+
+                for (IDataSet set : chart.getData().getDataSets())
+                    set.setDrawValues(!set.isDrawValuesEnabled());
+
+                chart.invalidate();
+                break;
+            }
+            /*
+            case R.id.actionToggleIcons: { break; }
+             */
+            case R.id.actionToggleHighlight: {
+
+                if(chart.getData() != null) {
+                    chart.getData().setHighlightEnabled(!chart.getData().isHighlightEnabled());
+                    chart.invalidate();
+                }
+                break;
+            }
+            case R.id.actionTogglePinch: {
+                if (chart.isPinchZoomEnabled())
+                    chart.setPinchZoom(false);
+                else
+                    chart.setPinchZoom(true);
+
+                chart.invalidate();
+                break;
+            }
+            case R.id.actionToggleAutoScaleMinMax: {
+                chart.setAutoScaleMinMaxEnabled(!chart.isAutoScaleMinMaxEnabled());
+                chart.notifyDataSetChanged();
+                break;
+            }
+            case R.id.actionToggleBarBorders: {
+                for (IBarDataSet set : chart.getData().getDataSets())
+                    ((BarDataSet)set).setBarBorderWidth(set.getBarBorderWidth() == 1.f ? 0.f : 1.f);
+
+                chart.invalidate();
+                break;
+            }
+            case R.id.animateX: {
+                chart.animateX(2000);
+                break;
+            }
+            case R.id.animateY: {
+                chart.animateY(2000);
+                break;
+            }
+            case R.id.animateXY: {
+
+                chart.animateXY(2000, 2000);
+                break;
+            }
+            case R.id.actionSave: {
+                if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
+                    saveToGallery();
+                } else {
+                    requestStoragePermission(chart);
+                }
+                break;
+            }
+        }
+        return true;
+    }
+
+    @Override
+    protected void saveToGallery() {
+        saveToGallery(chart, "AnotherBarActivity");
+    }
+
+    @Override
+    public void onStartTrackingTouch(SeekBar seekBar) {}
+
+    @Override
+    public void onStopTrackingTouch(SeekBar seekBar) {}
+}

MPChartExample/src/main/java/com/xxmassdeveloper/mpchartexample/BarChartActivity.java

@@ -0,0 +1,326 @@
+package com.xxmassdeveloper.mpchartexample;
+
+import android.Manifest;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.graphics.RectF;
+import android.net.Uri;
+import android.os.Bundle;
+import androidx.core.content.ContextCompat;
+import android.util.Log;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.WindowManager;
+import android.widget.SeekBar;
+import android.widget.SeekBar.OnSeekBarChangeListener;
+import android.widget.TextView;
+
+import com.github.mikephil.charting.charts.BarChart;
+import com.github.mikephil.charting.components.Legend;
+import com.github.mikephil.charting.components.Legend.LegendForm;
+import com.github.mikephil.charting.components.XAxis;
+import com.github.mikephil.charting.components.XAxis.XAxisPosition;
+import com.github.mikephil.charting.components.YAxis;
+import com.github.mikephil.charting.components.YAxis.AxisDependency;
+import com.github.mikephil.charting.components.YAxis.YAxisLabelPosition;
+import com.github.mikephil.charting.data.BarData;
+import com.github.mikephil.charting.data.BarDataSet;
+import com.github.mikephil.charting.data.BarEntry;
+import com.github.mikephil.charting.data.Entry;
+import com.github.mikephil.charting.formatter.ValueFormatter;
+import com.github.mikephil.charting.highlight.Highlight;
+import com.github.mikephil.charting.interfaces.datasets.IBarDataSet;
+import com.github.mikephil.charting.interfaces.datasets.IDataSet;
+import com.github.mikephil.charting.listener.OnChartValueSelectedListener;
+import com.github.mikephil.charting.utils.Fill;
+import com.github.mikephil.charting.utils.MPPointF;
+import com.xxmassdeveloper.mpchartexample.custom.DayAxisValueFormatter;
+import com.xxmassdeveloper.mpchartexample.custom.MyValueFormatter;
+import com.xxmassdeveloper.mpchartexample.custom.XYMarkerView;
+import com.xxmassdeveloper.mpchartexample.notimportant.DemoBase;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class BarChartActivity extends DemoBase implements OnSeekBarChangeListener,
+        OnChartValueSelectedListener {
+
+    private BarChart chart;
+    private SeekBar seekBarX, seekBarY;
+    private TextView tvX, tvY;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
+                WindowManager.LayoutParams.FLAG_FULLSCREEN);
+        setContentView(R.layout.activity_barchart);
+
+        setTitle("BarChartActivity");
+
+        tvX = findViewById(R.id.tvXMax);
+        tvY = findViewById(R.id.tvYMax);
+
+        seekBarX = findViewById(R.id.seekBar1);
+        seekBarY = findViewById(R.id.seekBar2);
+
+        seekBarY.setOnSeekBarChangeListener(this);
+        seekBarX.setOnSeekBarChangeListener(this);
+
+        chart = findViewById(R.id.chart1);
+        chart.setOnChartValueSelectedListener(this);
+
+        chart.setDrawBarShadow(false);
+        chart.setDrawValueAboveBar(true);
+
+        chart.getDescription().setEnabled(false);
+
+        // if more than 60 entries are displayed in the chart, no values will be
+        // drawn
+        chart.setMaxVisibleValueCount(60);
+
+        // scaling can now only be done on x- and y-axis separately
+        chart.setPinchZoom(false);
+
+        chart.setDrawGridBackground(false);
+        // chart.setDrawYLabels(false);
+
+        ValueFormatter xAxisFormatter = new DayAxisValueFormatter(chart);
+
+        XAxis xAxis = chart.getXAxis();
+        xAxis.setPosition(XAxisPosition.BOTTOM);
+        xAxis.setTypeface(tfLight);
+        xAxis.setDrawGridLines(false);
+        xAxis.setGranularity(1f); // only intervals of 1 day
+        xAxis.setLabelCount(7);
+        xAxis.setValueFormatter(xAxisFormatter);
+
+        ValueFormatter custom = new MyValueFormatter("$");
+
+        YAxis leftAxis = chart.getAxisLeft();
+        leftAxis.setTypeface(tfLight);
+        leftAxis.setLabelCount(8, false);
+        leftAxis.setValueFormatter(custom);
+        leftAxis.setPosition(YAxisLabelPosition.OUTSIDE_CHART);
+        leftAxis.setSpaceTop(15f);
+        leftAxis.setAxisMinimum(0f); // this replaces setStartAtZero(true)
+
+        YAxis rightAxis = chart.getAxisRight();
+        rightAxis.setDrawGridLines(false);
+        rightAxis.setTypeface(tfLight);
+        rightAxis.setLabelCount(8, false);
+        rightAxis.setValueFormatter(custom);
+        rightAxis.setSpaceTop(15f);
+        rightAxis.setAxisMinimum(0f); // this replaces setStartAtZero(true)
+
+        Legend l = chart.getLegend();
+        l.setVerticalAlignment(Legend.LegendVerticalAlignment.BOTTOM);
+        l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.LEFT);
+        l.setOrientation(Legend.LegendOrientation.HORIZONTAL);
+        l.setDrawInside(false);
+        l.setForm(LegendForm.SQUARE);
+        l.setFormSize(9f);
+        l.setTextSize(11f);
+        l.setXEntrySpace(4f);
+
+        XYMarkerView mv = new XYMarkerView(this, xAxisFormatter);
+        mv.setChartView(chart); // For bounds control
+        chart.setMarker(mv); // Set the marker to the chart
+
+        // setting data
+        seekBarY.setProgress(50);
+        seekBarX.setProgress(12);
+
+        // chart.setDrawLegend(false);
+    }
+
+    private void setData(int count, float range) {
+
+        float start = 1f;
+
+        ArrayList<BarEntry> values = new ArrayList<>();
+
+        for (int i = (int) start; i < start + count; i++) {
+            float val = (float) (Math.random() * (range + 1));
+
+            if (Math.random() * 100 < 25) {
+                values.add(new BarEntry(i, val, getResources().getDrawable(R.drawable.star)));
+            } else {
+                values.add(new BarEntry(i, val));
+            }
+        }
+
+        BarDataSet set1;
+
+        if (chart.getData() != null &&
+                chart.getData().getDataSetCount() > 0) {
+            set1 = (BarDataSet) chart.getData().getDataSetByIndex(0);
+            set1.setValues(values);
+            chart.getData().notifyDataChanged();
+            chart.notifyDataSetChanged();
+
+        } else {
+            set1 = new BarDataSet(values, "The year 2017");
+
+            set1.setDrawIcons(false);
+
+            int startColor1 = ContextCompat.getColor(this, android.R.color.holo_orange_light);
+            int startColor2 = ContextCompat.getColor(this, android.R.color.holo_blue_light);
+            int startColor3 = ContextCompat.getColor(this, android.R.color.holo_orange_light);
+            int startColor4 = ContextCompat.getColor(this, android.R.color.holo_green_light);
+            int startColor5 = ContextCompat.getColor(this, android.R.color.holo_red_light);
+            int endColor1 = ContextCompat.getColor(this, android.R.color.holo_blue_dark);
+            int endColor2 = ContextCompat.getColor(this, android.R.color.holo_purple);
+            int endColor3 = ContextCompat.getColor(this, android.R.color.holo_green_dark);
+            int endColor4 = ContextCompat.getColor(this, android.R.color.holo_red_dark);
+            int endColor5 = ContextCompat.getColor(this, android.R.color.holo_orange_dark);
+
+            List<Fill> gradientFills = new ArrayList<>();
+            gradientFills.add(new Fill(startColor1, endColor1));
+            gradientFills.add(new Fill(startColor2, endColor2));
+            gradientFills.add(new Fill(startColor3, endColor3));
+            gradientFills.add(new Fill(startColor4, endColor4));
+            gradientFills.add(new Fill(startColor5, endColor5));
+
+            set1.setFills(gradientFills);
+
+            ArrayList<IBarDataSet> dataSets = new ArrayList<>();
+            dataSets.add(set1);
+
+            BarData data = new BarData(dataSets);
+            data.setValueTextSize(10f);
+            data.setValueTypeface(tfLight);
+            data.setBarWidth(0.9f);
+
+            chart.setData(data);
+        }
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.bar, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+
+        switch (item.getItemId()) {
+            case R.id.viewGithub: {
+                Intent i = new Intent(Intent.ACTION_VIEW);
+                i.setData(Uri.parse("https://github.com/PhilJay/MPAndroidChart/blob/master/MPChartExample/src/com/xxmassdeveloper/mpchartexample/BarChartActivity.java"));
+                startActivity(i);
+                break;
+            }
+            case R.id.actionToggleValues: {
+                for (IDataSet set : chart.getData().getDataSets())
+                    set.setDrawValues(!set.isDrawValuesEnabled());
+
+                chart.invalidate();
+                break;
+            }
+            case R.id.actionToggleIcons: {
+                for (IDataSet set : chart.getData().getDataSets())
+                    set.setDrawIcons(!set.isDrawIconsEnabled());
+
+                chart.invalidate();
+                break;
+            }
+            case R.id.actionToggleHighlight: {
+                if (chart.getData() != null) {
+                    chart.getData().setHighlightEnabled(!chart.getData().isHighlightEnabled());
+                    chart.invalidate();
+                }
+                break;
+            }
+            case R.id.actionTogglePinch: {
+                if (chart.isPinchZoomEnabled())
+                    chart.setPinchZoom(false);
+                else
+                    chart.setPinchZoom(true);
+
+                chart.invalidate();
+                break;
+            }
+            case R.id.actionToggleAutoScaleMinMax: {
+                chart.setAutoScaleMinMaxEnabled(!chart.isAutoScaleMinMaxEnabled());
+                chart.notifyDataSetChanged();
+                break;
+            }
+            case R.id.actionToggleBarBorders: {
+                for (IBarDataSet set : chart.getData().getDataSets())
+                    ((BarDataSet) set).setBarBorderWidth(set.getBarBorderWidth() == 1.f ? 0.f : 1.f);
+
+                chart.invalidate();
+                break;
+            }
+            case R.id.animateX: {
+                chart.animateX(2000);
+                break;
+            }
+            case R.id.animateY: {
+                chart.animateY(2000);
+                break;
+            }
+            case R.id.animateXY: {
+                chart.animateXY(2000, 2000);
+                break;
+            }
+            case R.id.actionSave: {
+                if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
+                    saveToGallery();
+                } else {
+                    requestStoragePermission(chart);
+                }
+                break;
+            }
+        }
+        return true;
+    }
+
+    @Override
+    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+
+        tvX.setText(String.valueOf(seekBarX.getProgress()));
+        tvY.setText(String.valueOf(seekBarY.getProgress()));
+
+        setData(seekBarX.getProgress(), seekBarY.getProgress());
+        chart.invalidate();
+    }
+
+    @Override
+    protected void saveToGallery() {
+        saveToGallery(chart, "BarChartActivity");
+    }
+
+    @Override
+    public void onStartTrackingTouch(SeekBar seekBar) {}
+
+    @Override
+    public void onStopTrackingTouch(SeekBar seekBar) {}
+
+    private final RectF onValueSelectedRectF = new RectF();
+
+    @Override
+    public void onValueSelected(Entry e, Highlight h) {
+
+        if (e == null)
+            return;
+
+        RectF bounds = onValueSelectedRectF;
+        chart.getBarBounds((BarEntry) e, bounds);
+        MPPointF position = chart.getPosition(e, AxisDependency.LEFT);
+
+        Log.i("bounds", bounds.toString());
+        Log.i("position", position.toString());
+
+        Log.i("x-index",
+                "low: " + chart.getLowestVisibleX() + ", high: "
+                        + chart.getHighestVisibleX());
+
+        MPPointF.recycleInstance(position);
+    }
+
+    @Override
+    public void onNothingSelected() { }
+}

MPChartExample/src/main/java/com/xxmassdeveloper/mpchartexample/BarChartActivityMultiDataset.java

@@ -1,8 +1,12 @@
-
 package com.xxmassdeveloper.mpchartexample;
 
+import android.Manifest;
+import android.content.Intent;
+import android.content.pm.PackageManager;
 import android.graphics.Color;
+import android.net.Uri;
 import android.os.Bundle;
+import androidx.core.content.ContextCompat;
 import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
@@ -12,7 +16,6 @@ import android.widget.SeekBar.OnSeekBarChangeListener;
 import android.widget.TextView;
 
 import com.github.mikephil.charting.charts.BarChart;
-import com.github.mikephil.charting.components.AxisBase;
 import com.github.mikephil.charting.components.Legend;
 import com.github.mikephil.charting.components.XAxis;
 import com.github.mikephil.charting.components.YAxis;
@@ -20,8 +23,8 @@ import com.github.mikephil.charting.data.BarData;
 import com.github.mikephil.charting.data.BarDataSet;
 import com.github.mikephil.charting.data.BarEntry;
 import com.github.mikephil.charting.data.Entry;
-import com.github.mikephil.charting.formatter.IAxisValueFormatter;
 import com.github.mikephil.charting.formatter.LargeValueFormatter;
+import com.github.mikephil.charting.formatter.ValueFormatter;
 import com.github.mikephil.charting.highlight.Highlight;
 import com.github.mikephil.charting.interfaces.datasets.IBarDataSet;
 import com.github.mikephil.charting.listener.OnChartValueSelectedListener;
@@ -29,12 +32,13 @@ import com.xxmassdeveloper.mpchartexample.custom.MyMarkerView;
 import com.xxmassdeveloper.mpchartexample.notimportant.DemoBase;
 
 import java.util.ArrayList;
+import java.util.Locale;
 
 public class BarChartActivityMultiDataset extends DemoBase implements OnSeekBarChangeListener,
         OnChartValueSelectedListener {
 
-    private BarChart mChart;
-    private SeekBar mSeekBarX, mSeekBarY;
+    private BarChart chart;
+    private SeekBar seekBarX, seekBarY;
     private TextView tvX, tvY;
 
     @Override
@@ -44,68 +48,145 @@ public class BarChartActivityMultiDataset extends DemoBase implements OnSeekBarC
                 WindowManager.LayoutParams.FLAG_FULLSCREEN);
         setContentView(R.layout.activity_barchart);
 
-        tvX = (TextView) findViewById(R.id.tvXMax);
+        setTitle("BarChartActivityMultiDataset");
+
+        tvX = findViewById(R.id.tvXMax);
         tvX.setTextSize(10);
-        tvY = (TextView) findViewById(R.id.tvYMax);
+        tvY = findViewById(R.id.tvYMax);
 
-        mSeekBarX = (SeekBar) findViewById(R.id.seekBar1);
-        mSeekBarX.setOnSeekBarChangeListener(this);
+        seekBarX = findViewById(R.id.seekBar1);
+        seekBarX.setMax(50);
+        seekBarX.setOnSeekBarChangeListener(this);
 
-        mSeekBarY = (SeekBar) findViewById(R.id.seekBar2);
-        mSeekBarY.setOnSeekBarChangeListener(this);
+        seekBarY = findViewById(R.id.seekBar2);
+        seekBarY.setOnSeekBarChangeListener(this);
 
-        mChart = (BarChart) findViewById(R.id.chart1);
-        mChart.setOnChartValueSelectedListener(this);
-        mChart.getDescription().setEnabled(false);
+        chart = findViewById(R.id.chart1);
+        chart.setOnChartValueSelectedListener(this);
+        chart.getDescription().setEnabled(false);
 
-//        mChart.setDrawBorders(true);
+//        chart.setDrawBorders(true);
 
         // scaling can now only be done on x- and y-axis separately
-        mChart.setPinchZoom(false);
+        chart.setPinchZoom(false);
 
-        mChart.setDrawBarShadow(false);
+        chart.setDrawBarShadow(false);
 
-        mChart.setDrawGridBackground(false);
+        chart.setDrawGridBackground(false);
 
         // create a custom MarkerView (extend MarkerView) and specify the layout
         // to use for it
         MyMarkerView mv = new MyMarkerView(this, R.layout.custom_marker_view);
-        mv.setChartView(mChart); // For bounds control
-        mChart.setMarker(mv); // Set the marker to the chart
+        mv.setChartView(chart); // For bounds control
+        chart.setMarker(mv); // Set the marker to the chart
 
-        mSeekBarX.setProgress(10);
-        mSeekBarY.setProgress(100);
+        seekBarX.setProgress(10);
+        seekBarY.setProgress(100);
 
-        Legend l = mChart.getLegend();
+        Legend l = chart.getLegend();
         l.setVerticalAlignment(Legend.LegendVerticalAlignment.TOP);
         l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.RIGHT);
         l.setOrientation(Legend.LegendOrientation.VERTICAL);
         l.setDrawInside(true);
-        l.setTypeface(mTfLight);
+        l.setTypeface(tfLight);
         l.setYOffset(0f);
         l.setXOffset(10f);
         l.setYEntrySpace(0f);
         l.setTextSize(8f);
 
-        XAxis xAxis = mChart.getXAxis();
-        xAxis.setTypeface(mTfLight);
+        XAxis xAxis = chart.getXAxis();
+        xAxis.setTypeface(tfLight);
         xAxis.setGranularity(1f);
         xAxis.setCenterAxisLabels(true);
-        xAxis.setValueFormatter(new IAxisValueFormatter() {
+        xAxis.setValueFormatter(new ValueFormatter() {
             @Override
-            public String getFormattedValue(float value, AxisBase axis) {
+            public String getFormattedValue(float value) {
                 return String.valueOf((int) value);
             }
         });
 
-        YAxis leftAxis = mChart.getAxisLeft();
-        leftAxis.setTypeface(mTfLight);
+        YAxis leftAxis = chart.getAxisLeft();
+        leftAxis.setTypeface(tfLight);
         leftAxis.setValueFormatter(new LargeValueFormatter());
         leftAxis.setDrawGridLines(false);
         leftAxis.setSpaceTop(35f);
         leftAxis.setAxisMinimum(0f); // this replaces setStartAtZero(true)
 
-        mChart.getAxisRight().setEnabled(false);
+        chart.getAxisRight().setEnabled(false);
+    }
+
+    @Override
+    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+
+        float groupSpace = 0.08f;
+        float barSpace = 0.03f; // x4 DataSet
+        float barWidth = 0.2f; // x4 DataSet
+        // (0.2 + 0.03) * 4 + 0.08 = 1.00 -> interval per "group"
+
+        int groupCount = seekBarX.getProgress() + 1;
+        int startYear = 1980;
+        int endYear = startYear + groupCount;
+
+        tvX.setText(String.format(Locale.ENGLISH, "%d-%d", startYear, endYear));
+        tvY.setText(String.valueOf(seekBarY.getProgress()));
+
+        ArrayList<BarEntry> values1 = new ArrayList<>();
+        ArrayList<BarEntry> values2 = new ArrayList<>();
+        ArrayList<BarEntry> values3 = new ArrayList<>();
+        ArrayList<BarEntry> values4 = new ArrayList<>();
+
+        float randomMultiplier = seekBarY.getProgress() * 100000f;
+
+        for (int i = startYear; i < endYear; i++) {
+            values1.add(new BarEntry(i, (float) (Math.random() * randomMultiplier)));
+            values2.add(new BarEntry(i, (float) (Math.random() * randomMultiplier)));
+            values3.add(new BarEntry(i, (float) (Math.random() * randomMultiplier)));
+            values4.add(new BarEntry(i, (float) (Math.random() * randomMultiplier)));
+        }
+
+        BarDataSet set1, set2, set3, set4;
+
+        if (chart.getData() != null && chart.getData().getDataSetCount() > 0) {
+
+            set1 = (BarDataSet) chart.getData().getDataSetByIndex(0);
+            set2 = (BarDataSet) chart.getData().getDataSetByIndex(1);
+            set3 = (BarDataSet) chart.getData().getDataSetByIndex(2);
+            set4 = (BarDataSet) chart.getData().getDataSetByIndex(3);
+            set1.setValues(values1);
+            set2.setValues(values2);
+            set3.setValues(values3);
+            set4.setValues(values4);
+            chart.getData().notifyDataChanged();
+            chart.notifyDataSetChanged();
+
+        } else {
+            // create 4 DataSets
+            set1 = new BarDataSet(values1, "Company A");
+            set1.setColor(Color.rgb(104, 241, 175));
+            set2 = new BarDataSet(values2, "Company B");
+            set2.setColor(Color.rgb(164, 228, 251));
+            set3 = new BarDataSet(values3, "Company C");
+            set3.setColor(Color.rgb(242, 247, 158));
+            set4 = new BarDataSet(values4, "Company D");
+            set4.setColor(Color.rgb(255, 102, 0));
+
+            BarData data = new BarData(set1, set2, set3, set4);
+            data.setValueFormatter(new LargeValueFormatter());
+            data.setValueTypeface(tfLight);
+
+            chart.setData(data);
+        }
+
+        // specify the width each bar should have
+        chart.getBarData().setBarWidth(barWidth);
+
+        // restrict the x-axis range
+        chart.getXAxis().setAxisMinimum(startYear);
+
+        // barData.getGroupWith(...) is a helper that calculates the width each group needs based on the provided parameters
+        chart.getXAxis().setAxisMaximum(startYear + chart.getBarData().getGroupWidth(groupSpace, barSpace) * groupCount);
+        chart.groupBars(startYear, groupSpace, barSpace);
+        chart.invalidate();
     }
 
     @Override
@@ -118,56 +199,65 @@ public class BarChartActivityMultiDataset extends DemoBase implements OnSeekBarC
     public boolean onOptionsItemSelected(MenuItem item) {
 
         switch (item.getItemId()) {
+            case R.id.viewGithub: {
+                Intent i = new Intent(Intent.ACTION_VIEW);
+                i.setData(Uri.parse("https://github.com/PhilJay/MPAndroidChart/blob/master/MPChartExample/src/com/xxmassdeveloper/mpchartexample/BarChartActivityMultiDataset.java"));
+                startActivity(i);
+                break;
+            }
             case R.id.actionToggleValues: {
-                for (IBarDataSet set : mChart.getData().getDataSets())
+                for (IBarDataSet set : chart.getData().getDataSets())
                     set.setDrawValues(!set.isDrawValuesEnabled());
 
-                mChart.invalidate();
+                chart.invalidate();
                 break;
             }
             case R.id.actionTogglePinch: {
-                if (mChart.isPinchZoomEnabled())
-                    mChart.setPinchZoom(false);
+                if (chart.isPinchZoomEnabled())
+                    chart.setPinchZoom(false);
                 else
-                    mChart.setPinchZoom(true);
+                    chart.setPinchZoom(true);
 
-                mChart.invalidate();
+                chart.invalidate();
                 break;
             }
             case R.id.actionToggleAutoScaleMinMax: {
-                mChart.setAutoScaleMinMaxEnabled(!mChart.isAutoScaleMinMaxEnabled());
-                mChart.notifyDataSetChanged();
+                chart.setAutoScaleMinMaxEnabled(!chart.isAutoScaleMinMaxEnabled());
+                chart.notifyDataSetChanged();
                 break;
             }
             case R.id.actionToggleBarBorders: {
-                for (IBarDataSet set : mChart.getData().getDataSets())
+                for (IBarDataSet set : chart.getData().getDataSets())
                     ((BarDataSet) set).setBarBorderWidth(set.getBarBorderWidth() == 1.f ? 0.f : 1.f);
 
-                mChart.invalidate();
+                chart.invalidate();
                 break;
             }
             case R.id.actionToggleHighlight: {
-                if (mChart.getData() != null) {
-                    mChart.getData().setHighlightEnabled(!mChart.getData().isHighlightEnabled());
-                    mChart.invalidate();
+                if (chart.getData() != null) {
+                    chart.getData().setHighlightEnabled(!chart.getData().isHighlightEnabled());
+                    chart.invalidate();
                 }
                 break;
             }
             case R.id.actionSave: {
-                // mChart.saveToGallery("title"+System.currentTimeMillis());
-                mChart.saveToPath("title" + System.currentTimeMillis(), "");
+                if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
+                    saveToGallery();
+                } else {
+                    requestStoragePermission(chart);
+                }
                 break;
             }
             case R.id.animateX: {
-                mChart.animateX(3000);
+                chart.animateX(2000);
                 break;
             }
             case R.id.animateY: {
-                mChart.animateY(3000);
+                chart.animateY(2000);
                 break;
             }
             case R.id.animateXY: {
-                mChart.animateXY(3000, 3000);
+                chart.animateXY(2000, 2000);
                 break;
             }
         }
@@ -175,88 +265,15 @@ public class BarChartActivityMultiDataset extends DemoBase implements OnSeekBarC
     }
 
     @Override
-    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
-
-        float groupSpace = 0.08f;
-        float barSpace = 0.03f; // x4 DataSet
-        float barWidth = 0.2f; // x4 DataSet
-        // (0.2 + 0.03) * 4 + 0.08 = 1.00 -> interval per "group"
-
-        int groupCount = mSeekBarX.getProgress() + 1;
-        int startYear = 1980;
-        int endYear = startYear + groupCount;
-
-        tvX.setText(startYear + "-" + endYear);
-        tvY.setText("" + (mSeekBarY.getProgress()));
-
-        ArrayList<BarEntry> yVals1 = new ArrayList<BarEntry>();
-        ArrayList<BarEntry> yVals2 = new ArrayList<BarEntry>();
-        ArrayList<BarEntry> yVals3 = new ArrayList<BarEntry>();
-        ArrayList<BarEntry> yVals4 = new ArrayList<BarEntry>();
-
-        float randomMultiplier = mSeekBarY.getProgress() * 100000f;
-
-        for (int i = startYear; i < endYear; i++) {
-            yVals1.add(new BarEntry(i, (float) (Math.random() * randomMultiplier)));
-            yVals2.add(new BarEntry(i, (float) (Math.random() * randomMultiplier)));
-            yVals3.add(new BarEntry(i, (float) (Math.random() * randomMultiplier)));
-            yVals4.add(new BarEntry(i, (float) (Math.random() * randomMultiplier)));
-        }
-
-        BarDataSet set1, set2, set3, set4;
-
-        if (mChart.getData() != null && mChart.getData().getDataSetCount() > 0) {
-
-            set1 = (BarDataSet) mChart.getData().getDataSetByIndex(0);
-            set2 = (BarDataSet) mChart.getData().getDataSetByIndex(1);
-            set3 = (BarDataSet) mChart.getData().getDataSetByIndex(2);
-            set4 = (BarDataSet) mChart.getData().getDataSetByIndex(3);
-            set1.setValues(yVals1);
-            set2.setValues(yVals2);
-            set3.setValues(yVals3);
-            set4.setValues(yVals4);
-            mChart.getData().notifyDataChanged();
-            mChart.notifyDataSetChanged();
-
-        } else {
-            // create 4 DataSets
-            set1 = new BarDataSet(yVals1, "Company A");
-            set1.setColor(Color.rgb(104, 241, 175));
-            set2 = new BarDataSet(yVals2, "Company B");
-            set2.setColor(Color.rgb(164, 228, 251));
-            set3 = new BarDataSet(yVals3, "Company C");
-            set3.setColor(Color.rgb(242, 247, 158));
-            set4 = new BarDataSet(yVals4, "Company D");
-            set4.setColor(Color.rgb(255, 102, 0));
-
-            BarData data = new BarData(set1, set2, set3, set4);
-            data.setValueFormatter(new LargeValueFormatter());
-            data.setValueTypeface(mTfLight);
-
-            mChart.setData(data);
-        }
-
-        // specify the width each bar should have
-        mChart.getBarData().setBarWidth(barWidth);
-
-        // restrict the x-axis range
-        mChart.getXAxis().setAxisMinimum(startYear);
-
-        // barData.getGroupWith(...) is a helper that calculates the width each group needs based on the provided parameters
-        mChart.getXAxis().setAxisMaximum(startYear + mChart.getBarData().getGroupWidth(groupSpace, barSpace) * groupCount);
-        mChart.groupBars(startYear, groupSpace, barSpace);
-        mChart.invalidate();
+    protected void saveToGallery() {
+        saveToGallery(chart, "BarChartActivityMultiDataset");
     }
 
     @Override
-    public void onStartTrackingTouch(SeekBar seekBar) {
-        // TODO Auto-generated method stub
-    }
+    public void onStartTrackingTouch(SeekBar seekBar) {}
 
     @Override
-    public void onStopTrackingTouch(SeekBar seekBar) {
-        // TODO Auto-generated method stub
-    }
+    public void onStopTrackingTouch(SeekBar seekBar) {}
 
     @Override
     public void onValueSelected(Entry e, Highlight h) {

MPChartExample/src/main/java/com/xxmassdeveloper/mpchartexample/BarChartActivitySinus.java

@@ -1,20 +1,23 @@
 
 package com.xxmassdeveloper.mpchartexample;
 
+import android.Manifest;
+import android.content.Intent;
+import android.content.pm.PackageManager;
 import android.graphics.Color;
+import android.net.Uri;
 import android.os.Bundle;
+import androidx.core.content.ContextCompat;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.WindowManager;
 import android.widget.SeekBar;
 import android.widget.SeekBar.OnSeekBarChangeListener;
 import android.widget.TextView;
-import android.widget.Toast;
 
 import com.github.mikephil.charting.charts.BarChart;
 import com.github.mikephil.charting.components.Legend;
 import com.github.mikephil.charting.components.Legend.LegendForm;
-import com.github.mikephil.charting.components.Legend.LegendPosition;
 import com.github.mikephil.charting.components.XAxis;
 import com.github.mikephil.charting.components.YAxis;
 import com.github.mikephil.charting.data.BarData;
@@ -29,11 +32,11 @@ import java.util.List;
 
 public class BarChartActivitySinus extends DemoBase implements OnSeekBarChangeListener {
 
-    protected BarChart mChart;
-    private SeekBar mSeekBarX;
+    private BarChart chart;
+    private SeekBar seekBarX;
     private TextView tvX;
 
-    private List<BarEntry> mSinusData;
+    private List<BarEntry> data;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -42,57 +45,59 @@ public class BarChartActivitySinus extends DemoBase implements OnSeekBarChangeLi
                 WindowManager.LayoutParams.FLAG_FULLSCREEN);
         setContentView(R.layout.activity_barchart_sinus);
 
-        mSinusData = FileUtils.loadBarEntriesFromAssets(getAssets(), "othersine.txt");
+        setTitle("BarChartActivitySinus");
 
-        tvX = (TextView) findViewById(R.id.tvValueCount);
+        data = FileUtils.loadBarEntriesFromAssets(getAssets(), "othersine.txt");
 
-        mSeekBarX = (SeekBar) findViewById(R.id.seekbarValues);
+        tvX = findViewById(R.id.tvValueCount);
 
-        mChart = (BarChart) findViewById(R.id.chart1);
+        seekBarX = findViewById(R.id.seekbarValues);
 
-        mChart.setDrawBarShadow(false);
-        mChart.setDrawValueAboveBar(true);
+        chart = findViewById(R.id.chart1);
 
-        mChart.getDescription().setEnabled(false);
+        chart.setDrawBarShadow(false);
+        chart.setDrawValueAboveBar(true);
+
+        chart.getDescription().setEnabled(false);
 
         // if more than 60 entries are displayed in the chart, no values will be
         // drawn
-        mChart.setMaxVisibleValueCount(60);
+        chart.setMaxVisibleValueCount(60);
 
         // scaling can now only be done on x- and y-axis separately
-        mChart.setPinchZoom(false);
+        chart.setPinchZoom(false);
 
         // draw shadows for each bar that show the maximum value
-        // mChart.setDrawBarShadow(true);
+        // chart.setDrawBarShadow(true);
 
-        // mChart.setDrawXLabels(false);
+        // chart.setDrawXLabels(false);
 
-        mChart.setDrawGridBackground(false);
-        // mChart.setDrawYLabels(false);
+        chart.setDrawGridBackground(false);
+        // chart.setDrawYLabels(false);
 
-        XAxis xAxis = mChart.getXAxis();
+        XAxis xAxis = chart.getXAxis();
         xAxis.setEnabled(false);
 
-        YAxis leftAxis = mChart.getAxisLeft();
-        leftAxis.setTypeface(mTfLight);
+        YAxis leftAxis = chart.getAxisLeft();
+        leftAxis.setTypeface(tfLight);
         leftAxis.setLabelCount(6, false);
         leftAxis.setAxisMinimum(-2.5f);
         leftAxis.setAxisMaximum(2.5f);
         leftAxis.setGranularityEnabled(true);
         leftAxis.setGranularity(0.1f);
 
-        YAxis rightAxis = mChart.getAxisRight();
+        YAxis rightAxis = chart.getAxisRight();
         rightAxis.setDrawGridLines(false);
-        rightAxis.setTypeface(mTfLight);
+        rightAxis.setTypeface(tfLight);
         rightAxis.setLabelCount(6, false);
         rightAxis.setAxisMinimum(-2.5f);
         rightAxis.setAxisMaximum(2.5f);
         rightAxis.setGranularity(0.1f);
 
-        mSeekBarX.setOnSeekBarChangeListener(this);
-        mSeekBarX.setProgress(150); // set data
+        seekBarX.setOnSeekBarChangeListener(this);
+        seekBarX.setProgress(150); // set data
 
-        Legend l = mChart.getLegend();
+        Legend l = chart.getLegend();
         l.setVerticalAlignment(Legend.LegendVerticalAlignment.BOTTOM);
         l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.LEFT);
         l.setOrientation(Legend.LegendOrientation.HORIZONTAL);
@@ -102,7 +107,37 @@ public class BarChartActivitySinus extends DemoBase implements OnSeekBarChangeLi
         l.setTextSize(11f);
         l.setXEntrySpace(4f);
 
-        mChart.animateXY(2000, 2000);
+        chart.animateXY(1500, 1500);
+    }
+
+    private void setData(int count) {
+
+        ArrayList<BarEntry> entries = new ArrayList<>();
+
+        for (int i = 0; i < count; i++) {
+            entries.add(data.get(i));
+        }
+
+        BarDataSet set;
+
+        if (chart.getData() != null &&
+                chart.getData().getDataSetCount() > 0) {
+            set = (BarDataSet) chart.getData().getDataSetByIndex(0);
+            set.setValues(entries);
+            chart.getData().notifyDataChanged();
+            chart.notifyDataSetChanged();
+        } else {
+            set = new BarDataSet(entries, "Sinus Function");
+            set.setColor(Color.rgb(240, 120, 124));
+        }
+
+        BarData data = new BarData(set);
+        data.setValueTextSize(10f);
+        data.setValueTypeface(tfLight);
+        data.setDrawValues(false);
+        data.setBarWidth(0.8f);
+
+        chart.setData(data);
     }
 
     @Override
@@ -115,61 +150,66 @@ public class BarChartActivitySinus extends DemoBase implements OnSeekBarChangeLi
     public boolean onOptionsItemSelected(MenuItem item) {
 
         switch (item.getItemId()) {
+            case R.id.viewGithub: {
+                Intent i = new Intent(Intent.ACTION_VIEW);
+                i.setData(Uri.parse("https://github.com/PhilJay/MPAndroidChart/blob/master/MPChartExample/src/com/xxmassdeveloper/mpchartexample/BarChartActivitySinus.java"));
+                startActivity(i);
+                break;
+            }
             case R.id.actionToggleValues: {
-                for (IBarDataSet set : mChart.getData().getDataSets())
+                for (IBarDataSet set : chart.getData().getDataSets())
                     set.setDrawValues(!set.isDrawValuesEnabled());
 
-                mChart.invalidate();
+                chart.invalidate();
                 break;
             }
             case R.id.actionToggleHighlight: {
-                if (mChart.getData() != null) {
-                    mChart.getData().setHighlightEnabled(!mChart.getData().isHighlightEnabled());
-                    mChart.invalidate();
+                if (chart.getData() != null) {
+                    chart.getData().setHighlightEnabled(!chart.getData().isHighlightEnabled());
+                    chart.invalidate();
                 }
                 break;
             }
             case R.id.actionTogglePinch: {
-                if (mChart.isPinchZoomEnabled())
-                    mChart.setPinchZoom(false);
+                if (chart.isPinchZoomEnabled())
+                    chart.setPinchZoom(false);
                 else
-                    mChart.setPinchZoom(true);
+                    chart.setPinchZoom(true);
 
-                mChart.invalidate();
+                chart.invalidate();
                 break;
             }
             case R.id.actionToggleAutoScaleMinMax: {
-                mChart.setAutoScaleMinMaxEnabled(!mChart.isAutoScaleMinMaxEnabled());
-                mChart.notifyDataSetChanged();
+                chart.setAutoScaleMinMaxEnabled(!chart.isAutoScaleMinMaxEnabled());
+                chart.notifyDataSetChanged();
                 break;
             }
             case R.id.actionToggleBarBorders: {
-                for (IBarDataSet set : mChart.getData().getDataSets())
+                for (IBarDataSet set : chart.getData().getDataSets())
                     ((BarDataSet) set).setBarBorderWidth(set.getBarBorderWidth() == 1.f ? 0.f : 1.f);
 
-                mChart.invalidate();
+                chart.invalidate();
                 break;
             }
             case R.id.animateX: {
-                mChart.animateX(1500);
+                chart.animateX(2000);
                 break;
             }
             case R.id.animateY: {
-                mChart.animateY(1500);
+                chart.animateY(2000);
                 break;
             }
             case R.id.animateXY: {
 
-                mChart.animateXY(2000, 2000);
+                chart.animateXY(2000, 2000);
                 break;
             }
             case R.id.actionSave: {
-                if (mChart.saveToGallery("title" + System.currentTimeMillis(), 50)) {
-                    Toast.makeText(getApplicationContext(), "Saving SUCCESSFUL!",
-                            Toast.LENGTH_SHORT).show();
-                } else
-                    Toast.makeText(getApplicationContext(), "Saving FAILED!", Toast.LENGTH_SHORT)
-                            .show();
+                if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
+                    saveToGallery();
+                } else {
+                    requestStoragePermission(chart);
+                }
                 break;
             }
         }
@@ -179,51 +219,21 @@ public class BarChartActivitySinus extends DemoBase implements OnSeekBarChangeLi
     @Override
     public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
 
-        tvX.setText("" + (mSeekBarX.getProgress()));
+        tvX.setText(String.valueOf(seekBarX.getProgress()));
 
-        setData(mSeekBarX.getProgress());
-        mChart.invalidate();
+        setData(seekBarX.getProgress());
+        chart.invalidate();
     }
 
     @Override
-    public void onStartTrackingTouch(SeekBar seekBar) {
-        // TODO Auto-generated method stub
-
+    protected void saveToGallery() {
+        saveToGallery(chart, "BarChartActivitySinus");
     }
 
     @Override
-    public void onStopTrackingTouch(SeekBar seekBar) {
-        // TODO Auto-generated method stub
+    public void onStartTrackingTouch(SeekBar seekBar) {}
 
-    }
+    @Override
+    public void onStopTrackingTouch(SeekBar seekBar) {}
 
-    private void setData(int count) {
-
-        ArrayList<BarEntry> entries = new ArrayList<BarEntry>();
-
-        for (int i = 0; i < count; i++) {
-            entries.add(mSinusData.get(i));
-        }
-
-        BarDataSet set;
-
-        if (mChart.getData() != null &&
-                mChart.getData().getDataSetCount() > 0) {
-            set = (BarDataSet) mChart.getData().getDataSetByIndex(0);
-            set.setValues(entries);
-            mChart.getData().notifyDataChanged();
-            mChart.notifyDataSetChanged();
-        } else {
-            set = new BarDataSet(entries, "Sinus Function");
-            set.setColor(Color.rgb(240, 120, 124));
-        }
-
-        BarData data = new BarData(set);
-        data.setValueTextSize(10f);
-        data.setValueTypeface(mTfLight);
-        data.setDrawValues(false);
-        data.setBarWidth(0.8f);
-
-        mChart.setData(data);
-    }
 }

MPChartExample/src/main/java/com/xxmassdeveloper/mpchartexample/BarChartPositiveNegative.java

@@ -1,23 +1,21 @@
-
 package com.xxmassdeveloper.mpchartexample;
 
+import android.content.Intent;
 import android.graphics.Color;
-import android.graphics.Typeface;
+import android.net.Uri;
 import android.os.Bundle;
+import android.view.Menu;
+import android.view.MenuItem;
 import android.view.WindowManager;
 
 import com.github.mikephil.charting.charts.BarChart;
-import com.github.mikephil.charting.components.AxisBase;
 import com.github.mikephil.charting.components.XAxis;
 import com.github.mikephil.charting.components.XAxis.XAxisPosition;
 import com.github.mikephil.charting.components.YAxis;
 import com.github.mikephil.charting.data.BarData;
 import com.github.mikephil.charting.data.BarDataSet;
 import com.github.mikephil.charting.data.BarEntry;
-import com.github.mikephil.charting.data.Entry;
-import com.github.mikephil.charting.formatter.IAxisValueFormatter;
-import com.github.mikephil.charting.formatter.IValueFormatter;
-import com.github.mikephil.charting.utils.ViewPortHandler;
+import com.github.mikephil.charting.formatter.ValueFormatter;
 import com.xxmassdeveloper.mpchartexample.notimportant.DemoBase;
 
 import java.text.DecimalFormat;
@@ -26,8 +24,7 @@ import java.util.List;
 
 public class BarChartPositiveNegative extends DemoBase {
 
-    protected BarChart mChart;
-    private Typeface mTf;
+    private BarChart chart;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -36,27 +33,28 @@ public class BarChartPositiveNegative extends DemoBase {
                 WindowManager.LayoutParams.FLAG_FULLSCREEN);
         setContentView(R.layout.activity_barchart_noseekbar);
 
-        mTf = Typeface.createFromAsset(getAssets(), "OpenSans-Regular.ttf");
-        mChart = (BarChart) findViewById(R.id.chart1);
-        mChart.setBackgroundColor(Color.WHITE);
-        mChart.setExtraTopOffset(-30f);
-        mChart.setExtraBottomOffset(10f);
-        mChart.setExtraLeftOffset(70f);
-        mChart.setExtraRightOffset(70f);
+        setTitle("BarChartPositiveNegative");
 
-        mChart.setDrawBarShadow(false);
-        mChart.setDrawValueAboveBar(true);
+        chart = findViewById(R.id.chart1);
+        chart.setBackgroundColor(Color.WHITE);
+        chart.setExtraTopOffset(-30f);
+        chart.setExtraBottomOffset(10f);
+        chart.setExtraLeftOffset(70f);
+        chart.setExtraRightOffset(70f);
 
-        mChart.getDescription().setEnabled(false);
+        chart.setDrawBarShadow(false);
+        chart.setDrawValueAboveBar(true);
+
+        chart.getDescription().setEnabled(false);
 
         // scaling can now only be done on x- and y-axis separately
-        mChart.setPinchZoom(false);
+        chart.setPinchZoom(false);
 
-        mChart.setDrawGridBackground(false);
+        chart.setDrawGridBackground(false);
 
-        XAxis xAxis = mChart.getXAxis();
+        XAxis xAxis = chart.getXAxis();
         xAxis.setPosition(XAxisPosition.BOTTOM);
-        xAxis.setTypeface(mTf);
+        xAxis.setTypeface(tfRegular);
         xAxis.setDrawGridLines(false);
         xAxis.setDrawAxisLine(false);
         xAxis.setTextColor(Color.LTGRAY);
@@ -65,7 +63,7 @@ public class BarChartPositiveNegative extends DemoBase {
         xAxis.setCenterAxisLabels(true);
         xAxis.setGranularity(1f);
 
-        YAxis left = mChart.getAxisLeft();
+        YAxis left = chart.getAxisLeft();
         left.setDrawLabels(false);
         left.setSpaceTop(25f);
         left.setSpaceBottom(25f);
@@ -74,8 +72,8 @@ public class BarChartPositiveNegative extends DemoBase {
         left.setDrawZeroLine(true); // draw a zero line
         left.setZeroLineColor(Color.GRAY);
         left.setZeroLineWidth(0.7f);
-        mChart.getAxisRight().setEnabled(false);
-        mChart.getLegend().setEnabled(false);
+        chart.getAxisRight().setEnabled(false);
+        chart.getLegend().setEnabled(false);
 
         // THIS IS THE ORIGINAL DATA YOU WANT TO PLOT
         final List<Data> data = new ArrayList<>();
@@ -85,9 +83,9 @@ public class BarChartPositiveNegative extends DemoBase {
         data.add(new Data(3f, -442.3f, "01-01"));
         data.add(new Data(4f, -2280.1f, "01-02"));
 
-        xAxis.setValueFormatter(new IAxisValueFormatter() {
+        xAxis.setValueFormatter(new ValueFormatter() {
             @Override
-            public String getFormattedValue(float value, AxisBase axis) {
+            public String getFormattedValue(float value) {
                 return data.get(Math.min(Math.max((int) value, 0), data.size()-1)).xAxisValue;
             }
         });
@@ -97,8 +95,8 @@ public class BarChartPositiveNegative extends DemoBase {
 
     private void setData(List<Data> dataList) {
 
-        ArrayList<BarEntry> values = new ArrayList<BarEntry>();
-        List<Integer> colors = new ArrayList<Integer>();
+        ArrayList<BarEntry> values = new ArrayList<>();
+        List<Integer> colors = new ArrayList<>();
 
         int green = Color.rgb(110, 190, 102);
         int red = Color.rgb(211, 74, 88);
@@ -118,12 +116,12 @@ public class BarChartPositiveNegative extends DemoBase {
 
         BarDataSet set;
 
-        if (mChart.getData() != null &&
-                mChart.getData().getDataSetCount() > 0) {
-            set = (BarDataSet)mChart.getData().getDataSetByIndex(0);
+        if (chart.getData() != null &&
+                chart.getData().getDataSetCount() > 0) {
+            set = (BarDataSet) chart.getData().getDataSetByIndex(0);
             set.setValues(values);
-            mChart.getData().notifyDataChanged();
-            mChart.notifyDataSetChanged();
+            chart.getData().notifyDataChanged();
+            chart.notifyDataSetChanged();
         } else {
             set = new BarDataSet(values, "Values");
             set.setColors(colors);
@@ -131,12 +129,12 @@ public class BarChartPositiveNegative extends DemoBase {
 
             BarData data = new BarData(set);
             data.setValueTextSize(13f);
-            data.setValueTypeface(mTf);
-            data.setValueFormatter(new ValueFormatter());
+            data.setValueTypeface(tfRegular);
+            data.setValueFormatter(new Formatter());
             data.setBarWidth(0.8f);
 
-            mChart.setData(data);
-            mChart.invalidate();
+            chart.setData(data);
+            chart.invalidate();
         }
     }
 
@@ -145,29 +143,53 @@ public class BarChartPositiveNegative extends DemoBase {
      */
     private class Data {
 
-        public String xAxisValue;
-        public float yValue;
-        public float xValue;
+        final String xAxisValue;
+        final float yValue;
+        final float xValue;
 
-        public Data(float xValue, float yValue, String xAxisValue) {
+        Data(float xValue, float yValue, String xAxisValue) {
             this.xAxisValue = xAxisValue;
             this.yValue = yValue;
             this.xValue = xValue;
         }
     }
 
-    private class ValueFormatter implements IValueFormatter
+    private class Formatter extends ValueFormatter
     {
 
-        private DecimalFormat mFormat;
+        private final DecimalFormat mFormat;
 
-        public ValueFormatter() {
+        Formatter() {
             mFormat = new DecimalFormat("######.0");
         }
 
         @Override
-        public String getFormattedValue(float value, Entry entry, int dataSetIndex, ViewPortHandler viewPortHandler) {
+        public String getFormattedValue(float value) {
             return mFormat.format(value);
         }
     }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.only_github, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+
+        switch (item.getItemId()) {
+            case R.id.viewGithub: {
+                Intent i = new Intent(Intent.ACTION_VIEW);
+                i.setData(Uri.parse("https://github.com/PhilJay/MPAndroidChart/blob/master/MPChartExample/src/com/xxmassdeveloper/mpchartexample/BarChartPositiveNegative.java"));
+                startActivity(i);
+                break;
+            }
+        }
+
+        return true;
+    }
+
+    @Override
+    public void saveToGallery() { /* Intentionally left empty */ }
 }

MPChartExample/src/main/java/com/xxmassdeveloper/mpchartexample/BubbleChartActivity.java

@@ -1,8 +1,13 @@
 
 package com.xxmassdeveloper.mpchartexample;
 
+import android.Manifest;
+import android.content.Intent;
+import android.content.pm.PackageManager;
 import android.graphics.Color;
+import android.net.Uri;
 import android.os.Bundle;
+import androidx.core.content.ContextCompat;
 import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
@@ -13,7 +18,6 @@ import android.widget.TextView;
 
 import com.github.mikephil.charting.charts.BubbleChart;
 import com.github.mikephil.charting.components.Legend;
-import com.github.mikephil.charting.components.Legend.LegendPosition;
 import com.github.mikephil.charting.components.XAxis;
 import com.github.mikephil.charting.components.YAxis;
 import com.github.mikephil.charting.data.BubbleData;
@@ -33,10 +37,10 @@ import java.util.ArrayList;
 public class BubbleChartActivity extends DemoBase implements OnSeekBarChangeListener,
         OnChartValueSelectedListener {
 
-    private BubbleChart mChart;
-    private SeekBar mSeekBarX, mSeekBarY;
+    private BubbleChart chart;
+    private SeekBar seekBarX, seekBarY;
     private TextView tvX, tvY;
-    
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -44,52 +48,106 @@ public class BubbleChartActivity extends DemoBase implements OnSeekBarChangeList
                 WindowManager.LayoutParams.FLAG_FULLSCREEN);
         setContentView(R.layout.activity_bubblechart);
 
-        tvX = (TextView) findViewById(R.id.tvXMax);
-        tvY = (TextView) findViewById(R.id.tvYMax);
+        setTitle("BubbleChartActivity");
 
-        mSeekBarX = (SeekBar) findViewById(R.id.seekBar1);
-        mSeekBarX.setOnSeekBarChangeListener(this);
+        tvX = findViewById(R.id.tvXMax);
+        tvY = findViewById(R.id.tvYMax);
 
-        mSeekBarY = (SeekBar) findViewById(R.id.seekBar2);
-        mSeekBarY.setOnSeekBarChangeListener(this);
+        seekBarX = findViewById(R.id.seekBar1);
+        seekBarX.setOnSeekBarChangeListener(this);
 
-        mChart = (BubbleChart) findViewById(R.id.chart1);
-        mChart.getDescription().setEnabled(false);
+        seekBarY = findViewById(R.id.seekBar2);
+        seekBarY.setOnSeekBarChangeListener(this);
 
-        mChart.setOnChartValueSelectedListener(this);
+        chart = findViewById(R.id.chart1);
+        chart.getDescription().setEnabled(false);
 
-        mChart.setDrawGridBackground(false);
+        chart.setOnChartValueSelectedListener(this);
 
-        mChart.setTouchEnabled(true);
+        chart.setDrawGridBackground(false);
+
+        chart.setTouchEnabled(true);
 
         // enable scaling and dragging
-        mChart.setDragEnabled(true);
-        mChart.setScaleEnabled(true);
+        chart.setDragEnabled(true);
+        chart.setScaleEnabled(true);
 
-        mChart.setMaxVisibleValueCount(200);
-        mChart.setPinchZoom(true);
+        chart.setMaxVisibleValueCount(200);
+        chart.setPinchZoom(true);
 
-        mSeekBarX.setProgress(10);
-        mSeekBarY.setProgress(50);
+        seekBarX.setProgress(10);
+        seekBarY.setProgress(50);
 
-        Legend l = mChart.getLegend();
+        Legend l = chart.getLegend();
         l.setVerticalAlignment(Legend.LegendVerticalAlignment.TOP);
         l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.RIGHT);
         l.setOrientation(Legend.LegendOrientation.VERTICAL);
         l.setDrawInside(false);
-        l.setTypeface(mTfLight);
+        l.setTypeface(tfLight);
 
-        YAxis yl = mChart.getAxisLeft();
-        yl.setTypeface(mTfLight);
+        YAxis yl = chart.getAxisLeft();
+        yl.setTypeface(tfLight);
         yl.setSpaceTop(30f);
         yl.setSpaceBottom(30f);
         yl.setDrawZeroLine(false);
-        
-        mChart.getAxisRight().setEnabled(false);
 
-        XAxis xl = mChart.getXAxis();
+        chart.getAxisRight().setEnabled(false);
+
+        XAxis xl = chart.getXAxis();
         xl.setPosition(XAxis.XAxisPosition.BOTTOM);
-        xl.setTypeface(mTfLight);
+        xl.setTypeface(tfLight);
+    }
+
+    @Override
+    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+
+        int count = seekBarX.getProgress();
+        int range = seekBarY.getProgress();
+
+        tvX.setText(String.valueOf(count));
+        tvY.setText(String.valueOf(range));
+
+        ArrayList<BubbleEntry> values1 = new ArrayList<>();
+        ArrayList<BubbleEntry> values2 = new ArrayList<>();
+        ArrayList<BubbleEntry> values3 = new ArrayList<>();
+
+        for (int i = 0; i < count; i++) {
+            values1.add(new BubbleEntry(i, (float) (Math.random() * range), (float) (Math.random() * range), getResources().getDrawable(R.drawable.star)));
+            values2.add(new BubbleEntry(i, (float) (Math.random() * range), (float) (Math.random() * range), getResources().getDrawable(R.drawable.star)));
+            values3.add(new BubbleEntry(i, (float) (Math.random() * range), (float) (Math.random() * range)));
+        }
+
+        // create a dataset and give it a type
+        BubbleDataSet set1 = new BubbleDataSet(values1, "DS 1");
+        set1.setDrawIcons(false);
+        set1.setColor(ColorTemplate.COLORFUL_COLORS[0], 130);
+        set1.setDrawValues(true);
+
+        BubbleDataSet set2 = new BubbleDataSet(values2, "DS 2");
+        set2.setDrawIcons(false);
+        set2.setIconsOffset(new MPPointF(0, 15));
+        set2.setColor(ColorTemplate.COLORFUL_COLORS[1], 130);
+        set2.setDrawValues(true);
+
+        BubbleDataSet set3 = new BubbleDataSet(values3, "DS 3");
+        set3.setColor(ColorTemplate.COLORFUL_COLORS[2], 130);
+        set3.setDrawValues(true);
+
+        ArrayList<IBubbleDataSet> dataSets = new ArrayList<>();
+        dataSets.add(set1); // add the data sets
+        dataSets.add(set2);
+        dataSets.add(set3);
+
+        // create a data object with the data sets
+        BubbleData data = new BubbleData(dataSets);
+        data.setDrawValues(false);
+        data.setValueTypeface(tfLight);
+        data.setValueTextSize(8f);
+        data.setValueTextColor(Color.WHITE);
+        data.setHighlightCircleWidth(1.5f);
+
+        chart.setData(data);
+        chart.invalidate();
     }
 
     @Override
@@ -102,56 +160,65 @@ public class BubbleChartActivity extends DemoBase implements OnSeekBarChangeList
     public boolean onOptionsItemSelected(MenuItem item) {
 
         switch (item.getItemId()) {
+            case R.id.viewGithub: {
+                Intent i = new Intent(Intent.ACTION_VIEW);
+                i.setData(Uri.parse("https://github.com/PhilJay/MPAndroidChart/blob/master/MPChartExample/src/com/xxmassdeveloper/mpchartexample/BubbleChartActivity.java"));
+                startActivity(i);
+                break;
+            }
             case R.id.actionToggleValues: {
-                for (IDataSet set : mChart.getData().getDataSets())
+                for (IDataSet set : chart.getData().getDataSets())
                     set.setDrawValues(!set.isDrawValuesEnabled());
 
-                mChart.invalidate();
+                chart.invalidate();
                 break;
             }
             case R.id.actionToggleIcons: {
-                for (IDataSet set : mChart.getData().getDataSets())
+                for (IDataSet set : chart.getData().getDataSets())
                     set.setDrawIcons(!set.isDrawIconsEnabled());
 
-                mChart.invalidate();
+                chart.invalidate();
                 break;
             }
             case R.id.actionToggleHighlight: {
-                if(mChart.getData() != null) {
-                    mChart.getData().setHighlightEnabled(!mChart.getData().isHighlightEnabled());
-                    mChart.invalidate();
+                if(chart.getData() != null) {
+                    chart.getData().setHighlightEnabled(!chart.getData().isHighlightEnabled());
+                    chart.invalidate();
                 }
                 break;
             }
             case R.id.actionTogglePinch: {
-                if (mChart.isPinchZoomEnabled())
-                    mChart.setPinchZoom(false);
+                if (chart.isPinchZoomEnabled())
+                    chart.setPinchZoom(false);
                 else
-                    mChart.setPinchZoom(true);
+                    chart.setPinchZoom(true);
 
-                mChart.invalidate();
+                chart.invalidate();
                 break;
             }
             case R.id.actionToggleAutoScaleMinMax: {
-                mChart.setAutoScaleMinMaxEnabled(!mChart.isAutoScaleMinMaxEnabled());
-                mChart.notifyDataSetChanged();
+                chart.setAutoScaleMinMaxEnabled(!chart.isAutoScaleMinMaxEnabled());
+                chart.notifyDataSetChanged();
                 break;
             }
             case R.id.actionSave: {
-                mChart.saveToPath("title" + System.currentTimeMillis(), "");
+                if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
+                    saveToGallery();
+                } else {
+                    requestStoragePermission(chart);
+                }
                 break;
             }
             case R.id.animateX: {
-                mChart.animateX(3000);
+                chart.animateX(2000);
                 break;
             }
             case R.id.animateY: {
-                mChart.animateY(3000);
+                chart.animateY(2000);
                 break;
             }
             case R.id.animateXY: {
-
-                mChart.animateXY(3000, 3000);
+                chart.animateXY(2000, 2000);
                 break;
             }
         }
@@ -159,70 +226,8 @@ public class BubbleChartActivity extends DemoBase implements OnSeekBarChangeList
     }
 
     @Override
-    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
-
-        int count = mSeekBarX.getProgress();
-        int range = mSeekBarY.getProgress();
-
-        tvX.setText("" + count);
-        tvY.setText("" + range);
-
-        ArrayList<BubbleEntry> yVals1 = new ArrayList<BubbleEntry>();
-        ArrayList<BubbleEntry> yVals2 = new ArrayList<BubbleEntry>();
-        ArrayList<BubbleEntry> yVals3 = new ArrayList<BubbleEntry>();
-
-        for (int i = 0; i < count; i++) {
-            float val = (float) (Math.random() * range);
-            float size = (float) (Math.random() * range);
-
-            yVals1.add(new BubbleEntry(i, val, size, getResources().getDrawable(R.drawable.star)));
-        }
-
-        for (int i = 0; i < count; i++) {
-            float val = (float) (Math.random() * range);
-            float size = (float) (Math.random() * range);
-
-            yVals2.add(new BubbleEntry(i, val, size, getResources().getDrawable(R.drawable.star)));
-        }
-
-        for (int i = 0; i < count; i++) {
-            float val = (float) (Math.random() * range);
-            float size = (float) (Math.random() * range);
-
-            yVals3.add(new BubbleEntry(i, val, size));
-        }
-
-        // create a dataset and give it a type
-        BubbleDataSet set1 = new BubbleDataSet(yVals1, "DS 1");
-        set1.setDrawIcons(false);
-        set1.setColor(ColorTemplate.COLORFUL_COLORS[0], 130);
-        set1.setDrawValues(true);
-
-        BubbleDataSet set2 = new BubbleDataSet(yVals2, "DS 2");
-        set2.setDrawIcons(false);
-        set2.setIconsOffset(new MPPointF(0, 15));
-        set2.setColor(ColorTemplate.COLORFUL_COLORS[1], 130);
-        set2.setDrawValues(true);
-
-        BubbleDataSet set3 = new BubbleDataSet(yVals3, "DS 3");
-        set3.setColor(ColorTemplate.COLORFUL_COLORS[2], 130);
-        set3.setDrawValues(true);
-
-        ArrayList<IBubbleDataSet> dataSets = new ArrayList<IBubbleDataSet>();
-        dataSets.add(set1); // add the datasets
-        dataSets.add(set2);
-        dataSets.add(set3);
-
-        // create a data object with the datasets
-        BubbleData data = new BubbleData(dataSets);
-        data.setDrawValues(false);
-        data.setValueTypeface(mTfLight);
-        data.setValueTextSize(8f);
-        data.setValueTextColor(Color.WHITE);
-        data.setHighlightCircleWidth(1.5f);
-
-        mChart.setData(data);
-        mChart.invalidate();
+    protected void saveToGallery() {
+        saveToGallery(chart, "BubbleChartActivity");
     }
 
     @Override
@@ -233,20 +238,11 @@ public class BubbleChartActivity extends DemoBase implements OnSeekBarChangeList
     }
 
     @Override
-    public void onNothingSelected() {
-        // TODO Auto-generated method stub
-
-    }
+    public void onNothingSelected() {}
 
     @Override
-    public void onStartTrackingTouch(SeekBar seekBar) {
-        // TODO Auto-generated method stub
-
-    }
+    public void onStartTrackingTouch(SeekBar seekBar) {}
 
     @Override
-    public void onStopTrackingTouch(SeekBar seekBar) {
-        // TODO Auto-generated method stub
-
-    }
+    public void onStopTrackingTouch(SeekBar seekBar) {}
 }

MPChartExample/src/main/java/com/xxmassdeveloper/mpchartexample/CandleStickChartActivity.java

@@ -1,16 +1,20 @@
 
 package com.xxmassdeveloper.mpchartexample;
 
+import android.Manifest;
+import android.content.Intent;
+import android.content.pm.PackageManager;
 import android.graphics.Color;
 import android.graphics.Paint;
+import android.net.Uri;
 import android.os.Bundle;
+import androidx.core.content.ContextCompat;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.WindowManager;
 import android.widget.SeekBar;
 import android.widget.SeekBar.OnSeekBarChangeListener;
 import android.widget.TextView;
-import android.widget.Toast;
 
 import com.github.mikephil.charting.charts.CandleStickChart;
 import com.github.mikephil.charting.components.XAxis;
@@ -28,8 +32,8 @@ import java.util.ArrayList;
 
 public class CandleStickChartActivity extends DemoBase implements OnSeekBarChangeListener {
 
-    private CandleStickChart mChart;
-    private SeekBar mSeekBarX, mSeekBarY;
+    private CandleStickChart chart;
+    private SeekBar seekBarX, seekBarY;
     private TextView tvX, tvY;
 
     @Override
@@ -39,154 +43,77 @@ public class CandleStickChartActivity extends DemoBase implements OnSeekBarChang
                 WindowManager.LayoutParams.FLAG_FULLSCREEN);
         setContentView(R.layout.activity_candlechart);
 
-        tvX = (TextView) findViewById(R.id.tvXMax);
-        tvY = (TextView) findViewById(R.id.tvYMax);
+        setTitle("CandleStickChartActivity");
 
-        mSeekBarX = (SeekBar) findViewById(R.id.seekBar1);
-        mSeekBarX.setOnSeekBarChangeListener(this);
+        tvX = findViewById(R.id.tvXMax);
+        tvY = findViewById(R.id.tvYMax);
 
-        mSeekBarY = (SeekBar) findViewById(R.id.seekBar2);
-        mSeekBarY.setOnSeekBarChangeListener(this);
+        seekBarX = findViewById(R.id.seekBar1);
+        seekBarX.setOnSeekBarChangeListener(this);
 
-        mChart = (CandleStickChart) findViewById(R.id.chart1);
-        mChart.setBackgroundColor(Color.WHITE);
+        seekBarY = findViewById(R.id.seekBar2);
+        seekBarY.setOnSeekBarChangeListener(this);
 
-        mChart.getDescription().setEnabled(false);
+        chart = findViewById(R.id.chart1);
+        chart.setBackgroundColor(Color.WHITE);
+
+        chart.getDescription().setEnabled(false);
 
         // if more than 60 entries are displayed in the chart, no values will be
         // drawn
-        mChart.setMaxVisibleValueCount(60);
+        chart.setMaxVisibleValueCount(60);
 
         // scaling can now only be done on x- and y-axis separately
-        mChart.setPinchZoom(false);
+        chart.setPinchZoom(false);
 
-        mChart.setDrawGridBackground(false);
+        chart.setDrawGridBackground(false);
 
-        XAxis xAxis = mChart.getXAxis();
+        XAxis xAxis = chart.getXAxis();
         xAxis.setPosition(XAxisPosition.BOTTOM);
         xAxis.setDrawGridLines(false);
 
-        YAxis leftAxis = mChart.getAxisLeft();  
+        YAxis leftAxis = chart.getAxisLeft();
 //        leftAxis.setEnabled(false);
         leftAxis.setLabelCount(7, false);
         leftAxis.setDrawGridLines(false);
         leftAxis.setDrawAxisLine(false);
-        
-        YAxis rightAxis = mChart.getAxisRight();
+
+        YAxis rightAxis = chart.getAxisRight();
         rightAxis.setEnabled(false);
 //        rightAxis.setStartAtZero(false);
 
         // setting data
-        mSeekBarX.setProgress(40);
-        mSeekBarY.setProgress(100);
-        
-        mChart.getLegend().setEnabled(false);
-    }
+        seekBarX.setProgress(40);
+        seekBarY.setProgress(100);
 
-    @Override
-    public boolean onCreateOptionsMenu(Menu menu) {
-        getMenuInflater().inflate(R.menu.candle, menu);
-        return true;
-    }
-
-    @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
-
-        switch (item.getItemId()) {
-            case R.id.actionToggleValues: {
-                for (IDataSet set : mChart.getData().getDataSets())
-                    set.setDrawValues(!set.isDrawValuesEnabled());
-
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionToggleIcons: {
-                for (IDataSet set : mChart.getData().getDataSets())
-                    set.setDrawIcons(!set.isDrawIconsEnabled());
-
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionToggleHighlight: {
-                if(mChart.getData() != null) {
-                    mChart.getData().setHighlightEnabled(!mChart.getData().isHighlightEnabled());
-                    mChart.invalidate();
-                }
-                break;
-            }
-            case R.id.actionTogglePinch: {
-                if (mChart.isPinchZoomEnabled())
-                    mChart.setPinchZoom(false);
-                else
-                    mChart.setPinchZoom(true);
-
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionToggleAutoScaleMinMax: {
-                mChart.setAutoScaleMinMaxEnabled(!mChart.isAutoScaleMinMaxEnabled());
-                mChart.notifyDataSetChanged();
-                break;
-            }
-            case R.id.actionToggleMakeShadowSameColorAsCandle: {
-                for (ICandleDataSet set : mChart.getData().getDataSets()) {
-                   //TODO: set.setShadowColorSameAsCandle(!set.getShadowColorSameAsCandle());
-                }
-
-                mChart.invalidate();
-                break;
-            }
-            case R.id.animateX: {
-                mChart.animateX(3000);
-                break;
-            }
-            case R.id.animateY: {
-                mChart.animateY(3000);
-                break;
-            }
-            case R.id.animateXY: {
-
-                mChart.animateXY(3000, 3000);
-                break;
-            }
-            case R.id.actionSave: {
-                if (mChart.saveToGallery("title" + System.currentTimeMillis(), 50)) {
-                    Toast.makeText(getApplicationContext(), "Saving SUCCESSFUL!",
-                            Toast.LENGTH_SHORT).show();
-                } else
-                    Toast.makeText(getApplicationContext(), "Saving FAILED!", Toast.LENGTH_SHORT)
-                            .show();
-                break;
-            }
-        }
-        return true;
+        chart.getLegend().setEnabled(false);
     }
 
     @Override
     public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
-        
-        int prog = (mSeekBarX.getProgress() + 1);
 
-        tvX.setText("" + prog);
-        tvY.setText("" + (mSeekBarY.getProgress()));
-        
-        mChart.resetTracking();
+        progress = (seekBarX.getProgress());
 
-        ArrayList<CandleEntry> yVals1 = new ArrayList<CandleEntry>();
+        tvX.setText(String.valueOf(progress));
+        tvY.setText(String.valueOf(seekBarY.getProgress()));
+
+        chart.resetTracking();
+
+        ArrayList<CandleEntry> values = new ArrayList<>();
+
+        for (int i = 0; i < progress; i++) {
+            float multi = (seekBarY.getProgress() + 1);
+            float val = (float) (Math.random() * 40) + multi;
 
-        for (int i = 0; i < prog; i++) {
-            float mult = (mSeekBarY.getProgress() + 1);
-            float val = (float) (Math.random() * 40) + mult;
-            
             float high = (float) (Math.random() * 9) + 8f;
             float low = (float) (Math.random() * 9) + 8f;
-            
+
             float open = (float) (Math.random() * 6) + 1f;
             float close = (float) (Math.random() * 6) + 1f;
 
             boolean even = i % 2 == 0;
 
-            yVals1.add(new CandleEntry(
+            values.add(new CandleEntry(
                     i, val + high,
                     val - low,
                     even ? val + open : val - open,
@@ -195,7 +122,7 @@ public class CandleStickChartActivity extends DemoBase implements OnSeekBarChang
             ));
         }
 
-        CandleDataSet set1 = new CandleDataSet(yVals1, "Data Set");
+        CandleDataSet set1 = new CandleDataSet(values, "Data Set");
 
         set1.setDrawIcons(false);
         set1.setAxisDependency(AxisDependency.LEFT);
@@ -210,20 +137,102 @@ public class CandleStickChartActivity extends DemoBase implements OnSeekBarChang
         //set1.setHighlightLineWidth(1f);
 
         CandleData data = new CandleData(set1);
-        
-        mChart.setData(data);
-        mChart.invalidate();
+
+        chart.setData(data);
+        chart.invalidate();
     }
 
     @Override
-    public void onStartTrackingTouch(SeekBar seekBar) {
-        // TODO Auto-generated method stub
-
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.candle, menu);
+        return true;
     }
 
     @Override
-    public void onStopTrackingTouch(SeekBar seekBar) {
-        // TODO Auto-generated method stub
+    public boolean onOptionsItemSelected(MenuItem item) {
 
+        switch (item.getItemId()) {
+            case R.id.viewGithub: {
+                Intent i = new Intent(Intent.ACTION_VIEW);
+                i.setData(Uri.parse("https://github.com/PhilJay/MPAndroidChart/blob/master/MPChartExample/src/com/xxmassdeveloper/mpchartexample/CandleStickChartActivity.java"));
+                startActivity(i);
+                break;
+            }
+            case R.id.actionToggleValues: {
+                for (IDataSet set : chart.getData().getDataSets())
+                    set.setDrawValues(!set.isDrawValuesEnabled());
+
+                chart.invalidate();
+                break;
+            }
+            case R.id.actionToggleIcons: {
+                for (IDataSet set : chart.getData().getDataSets())
+                    set.setDrawIcons(!set.isDrawIconsEnabled());
+
+                chart.invalidate();
+                break;
+            }
+            case R.id.actionToggleHighlight: {
+                if(chart.getData() != null) {
+                    chart.getData().setHighlightEnabled(!chart.getData().isHighlightEnabled());
+                    chart.invalidate();
+                }
+                break;
+            }
+            case R.id.actionTogglePinch: {
+                if (chart.isPinchZoomEnabled())
+                    chart.setPinchZoom(false);
+                else
+                    chart.setPinchZoom(true);
+
+                chart.invalidate();
+                break;
+            }
+            case R.id.actionToggleAutoScaleMinMax: {
+                chart.setAutoScaleMinMaxEnabled(!chart.isAutoScaleMinMaxEnabled());
+                chart.notifyDataSetChanged();
+                break;
+            }
+            case R.id.actionToggleMakeShadowSameColorAsCandle: {
+                for (ICandleDataSet set : chart.getData().getDataSets()) {
+                    ((CandleDataSet) set).setShadowColorSameAsCandle(!set.getShadowColorSameAsCandle());
+                }
+
+                chart.invalidate();
+                break;
+            }
+            case R.id.animateX: {
+                chart.animateX(2000);
+                break;
+            }
+            case R.id.animateY: {
+                chart.animateY(2000);
+                break;
+            }
+            case R.id.animateXY: {
+                chart.animateXY(2000, 2000);
+                break;
+            }
+            case R.id.actionSave: {
+                if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
+                    saveToGallery();
+                } else {
+                    requestStoragePermission(chart);
+                }
+                break;
+            }
+        }
+        return true;
     }
+
+    @Override
+    protected void saveToGallery() {
+        saveToGallery(chart, "CandleStickChartActivity");
+    }
+
+    @Override
+    public void onStartTrackingTouch(SeekBar seekBar) {}
+
+    @Override
+    public void onStopTrackingTouch(SeekBar seekBar) {}
 }

MPChartExample/src/main/java/com/xxmassdeveloper/mpchartexample/CombinedChartActivity.java

@@ -1,7 +1,8 @@
-
 package com.xxmassdeveloper.mpchartexample;
 
+import android.content.Intent;
 import android.graphics.Color;
+import android.net.Uri;
 import android.os.Bundle;
 import android.view.Menu;
 import android.view.MenuItem;
@@ -9,7 +10,6 @@ import android.view.WindowManager;
 
 import com.github.mikephil.charting.charts.CombinedChart;
 import com.github.mikephil.charting.charts.CombinedChart.DrawOrder;
-import com.github.mikephil.charting.components.AxisBase;
 import com.github.mikephil.charting.components.Legend;
 import com.github.mikephil.charting.components.XAxis;
 import com.github.mikephil.charting.components.XAxis.XAxisPosition;
@@ -29,7 +29,7 @@ import com.github.mikephil.charting.data.LineData;
 import com.github.mikephil.charting.data.LineDataSet;
 import com.github.mikephil.charting.data.ScatterData;
 import com.github.mikephil.charting.data.ScatterDataSet;
-import com.github.mikephil.charting.formatter.IAxisValueFormatter;
+import com.github.mikephil.charting.formatter.ValueFormatter;
 import com.github.mikephil.charting.interfaces.datasets.IDataSet;
 import com.github.mikephil.charting.utils.ColorTemplate;
 import com.xxmassdeveloper.mpchartexample.notimportant.DemoBase;
@@ -38,8 +38,8 @@ import java.util.ArrayList;
 
 public class CombinedChartActivity extends DemoBase {
 
-    private CombinedChart mChart;
-    private final int itemcount = 12;
+    private CombinedChart chart;
+    private final int count = 12;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -48,41 +48,43 @@ public class CombinedChartActivity extends DemoBase {
                 WindowManager.LayoutParams.FLAG_FULLSCREEN);
         setContentView(R.layout.activity_combined);
 
-        mChart = (CombinedChart) findViewById(R.id.chart1);
-        mChart.getDescription().setEnabled(false);
-        mChart.setBackgroundColor(Color.WHITE);
-        mChart.setDrawGridBackground(false);
-        mChart.setDrawBarShadow(false);
-        mChart.setHighlightFullBarEnabled(false);
+        setTitle("CombinedChartActivity");
+
+        chart = findViewById(R.id.chart1);
+        chart.getDescription().setEnabled(false);
+        chart.setBackgroundColor(Color.WHITE);
+        chart.setDrawGridBackground(false);
+        chart.setDrawBarShadow(false);
+        chart.setHighlightFullBarEnabled(false);
 
         // draw bars behind lines
-        mChart.setDrawOrder(new DrawOrder[]{
+        chart.setDrawOrder(new DrawOrder[]{
                 DrawOrder.BAR, DrawOrder.BUBBLE, DrawOrder.CANDLE, DrawOrder.LINE, DrawOrder.SCATTER
         });
 
-        Legend l = mChart.getLegend();
+        Legend l = chart.getLegend();
         l.setWordWrapEnabled(true);
         l.setVerticalAlignment(Legend.LegendVerticalAlignment.BOTTOM);
         l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.CENTER);
         l.setOrientation(Legend.LegendOrientation.HORIZONTAL);
         l.setDrawInside(false);
 
-        YAxis rightAxis = mChart.getAxisRight();
+        YAxis rightAxis = chart.getAxisRight();
         rightAxis.setDrawGridLines(false);
         rightAxis.setAxisMinimum(0f); // this replaces setStartAtZero(true)
 
-        YAxis leftAxis = mChart.getAxisLeft();
+        YAxis leftAxis = chart.getAxisLeft();
         leftAxis.setDrawGridLines(false);
         leftAxis.setAxisMinimum(0f); // this replaces setStartAtZero(true)
 
-        XAxis xAxis = mChart.getXAxis();
+        XAxis xAxis = chart.getXAxis();
         xAxis.setPosition(XAxisPosition.BOTH_SIDED);
         xAxis.setAxisMinimum(0f);
         xAxis.setGranularity(1f);
-        xAxis.setValueFormatter(new IAxisValueFormatter() {
+        xAxis.setValueFormatter(new ValueFormatter() {
             @Override
-            public String getFormattedValue(float value, AxisBase axis) {
-                return mMonths[(int) value % mMonths.length];
+            public String getFormattedValue(float value) {
+                return months[(int) value % months.length];
             }
         });
 
@@ -93,21 +95,21 @@ public class CombinedChartActivity extends DemoBase {
         data.setData(generateBubbleData());
         data.setData(generateScatterData());
         data.setData(generateCandleData());
-        data.setValueTypeface(mTfLight);
+        data.setValueTypeface(tfLight);
 
         xAxis.setAxisMaximum(data.getXMax() + 0.25f);
 
-        mChart.setData(data);
-        mChart.invalidate();
+        chart.setData(data);
+        chart.invalidate();
     }
 
     private LineData generateLineData() {
 
         LineData d = new LineData();
 
-        ArrayList<Entry> entries = new ArrayList<Entry>();
+        ArrayList<Entry> entries = new ArrayList<>();
 
-        for (int index = 0; index < itemcount; index++)
+        for (int index = 0; index < count; index++)
             entries.add(new Entry(index + 0.5f, getRandom(15, 5)));
 
         LineDataSet set = new LineDataSet(entries, "Line DataSet");
@@ -129,10 +131,10 @@ public class CombinedChartActivity extends DemoBase {
 
     private BarData generateBarData() {
 
-        ArrayList<BarEntry> entries1 = new ArrayList<BarEntry>();
-        ArrayList<BarEntry> entries2 = new ArrayList<BarEntry>();
+        ArrayList<BarEntry> entries1 = new ArrayList<>();
+        ArrayList<BarEntry> entries2 = new ArrayList<>();
 
-        for (int index = 0; index < itemcount; index++) {
+        for (int index = 0; index < count; index++) {
             entries1.add(new BarEntry(0, getRandom(25, 25)));
 
             // stacked
@@ -147,7 +149,7 @@ public class CombinedChartActivity extends DemoBase {
 
         BarDataSet set2 = new BarDataSet(entries2, "");
         set2.setStackLabels(new String[]{"Stack 1", "Stack 2"});
-        set2.setColors(new int[]{Color.rgb(61, 165, 255), Color.rgb(23, 197, 255)});
+        set2.setColors(Color.rgb(61, 165, 255), Color.rgb(23, 197, 255));
         set2.setValueTextColor(Color.rgb(61, 165, 255));
         set2.setValueTextSize(10f);
         set2.setAxisDependency(YAxis.AxisDependency.LEFT);
@@ -166,13 +168,13 @@ public class CombinedChartActivity extends DemoBase {
         return d;
     }
 
-    protected ScatterData generateScatterData() {
+    private ScatterData generateScatterData() {
 
         ScatterData d = new ScatterData();
 
-        ArrayList<Entry> entries = new ArrayList<Entry>();
+        ArrayList<Entry> entries = new ArrayList<>();
 
-        for (float index = 0; index < itemcount; index += 0.5f)
+        for (float index = 0; index < count; index += 0.5f)
             entries.add(new Entry(index + 0.25f, getRandom(10, 55)));
 
         ScatterDataSet set = new ScatterDataSet(entries, "Scatter DataSet");
@@ -185,13 +187,13 @@ public class CombinedChartActivity extends DemoBase {
         return d;
     }
 
-    protected CandleData generateCandleData() {
+    private CandleData generateCandleData() {
 
         CandleData d = new CandleData();
 
-        ArrayList<CandleEntry> entries = new ArrayList<CandleEntry>();
+        ArrayList<CandleEntry> entries = new ArrayList<>();
 
-        for (int index = 0; index < itemcount; index += 2)
+        for (int index = 0; index < count; index += 2)
             entries.add(new CandleEntry(index + 1f, 90, 70, 85, 75f));
 
         CandleDataSet set = new CandleDataSet(entries, "Candle DataSet");
@@ -205,13 +207,13 @@ public class CombinedChartActivity extends DemoBase {
         return d;
     }
 
-    protected BubbleData generateBubbleData() {
+    private BubbleData generateBubbleData() {
 
         BubbleData bd = new BubbleData();
 
-        ArrayList<BubbleEntry> entries = new ArrayList<BubbleEntry>();
+        ArrayList<BubbleEntry> entries = new ArrayList<>();
 
-        for (int index = 0; index < itemcount; index++) {
+        for (int index = 0; index < count; index++) {
             float y = getRandom(10, 105);
             float size = getRandom(100, 105);
             entries.add(new BubbleEntry(index + 0.5f, y, size));
@@ -237,34 +239,42 @@ public class CombinedChartActivity extends DemoBase {
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         switch (item.getItemId()) {
+            case R.id.viewGithub: {
+                Intent i = new Intent(Intent.ACTION_VIEW);
+                i.setData(Uri.parse("https://github.com/PhilJay/MPAndroidChart/blob/master/MPChartExample/src/com/xxmassdeveloper/mpchartexample/CombinedChartActivity.java"));
+                startActivity(i);
+                break;
+            }
             case R.id.actionToggleLineValues: {
-                for (IDataSet set : mChart.getData().getDataSets()) {
+                for (IDataSet set : chart.getData().getDataSets()) {
                     if (set instanceof LineDataSet)
                         set.setDrawValues(!set.isDrawValuesEnabled());
                 }
 
-                mChart.invalidate();
+                chart.invalidate();
                 break;
             }
             case R.id.actionToggleBarValues: {
-                for (IDataSet set : mChart.getData().getDataSets()) {
+                for (IDataSet set : chart.getData().getDataSets()) {
                     if (set instanceof BarDataSet)
                         set.setDrawValues(!set.isDrawValuesEnabled());
                 }
 
-                mChart.invalidate();
+                chart.invalidate();
                 break;
             }
             case R.id.actionRemoveDataSet: {
-
-                int rnd = (int) getRandom(mChart.getData().getDataSetCount(), 0);
-                mChart.getData().removeDataSet(mChart.getData().getDataSetByIndex(rnd));
-                mChart.getData().notifyDataChanged();
-                mChart.notifyDataSetChanged();
-                mChart.invalidate();
+                int rnd = (int) getRandom(chart.getData().getDataSetCount(), 0);
+                chart.getData().removeDataSet(chart.getData().getDataSetByIndex(rnd));
+                chart.getData().notifyDataChanged();
+                chart.notifyDataSetChanged();
+                chart.invalidate();
                 break;
             }
         }
         return true;
     }
+
+    @Override
+    public void saveToGallery() { /* Intentionally left empty */ }
 }

MPChartExample/src/main/java/com/xxmassdeveloper/mpchartexample/CubicLineChartActivity.java

@@ -1,15 +1,19 @@
 
 package com.xxmassdeveloper.mpchartexample;
 
+import android.Manifest;
+import android.content.Intent;
+import android.content.pm.PackageManager;
 import android.graphics.Color;
+import android.net.Uri;
 import android.os.Bundle;
+import androidx.core.content.ContextCompat;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.WindowManager;
 import android.widget.SeekBar;
 import android.widget.SeekBar.OnSeekBarChangeListener;
 import android.widget.TextView;
-import android.widget.Toast;
 
 import com.github.mikephil.charting.charts.LineChart;
 import com.github.mikephil.charting.components.XAxis;
@@ -28,8 +32,8 @@ import java.util.List;
 
 public class CubicLineChartActivity extends DemoBase implements OnSeekBarChangeListener {
 
-    private LineChart mChart;
-    private SeekBar mSeekBarX, mSeekBarY;
+    private LineChart chart;
+    private SeekBar seekBarX, seekBarY;
     private TextView tvX, tvY;
 
     @Override
@@ -39,252 +43,89 @@ public class CubicLineChartActivity extends DemoBase implements OnSeekBarChangeL
                 WindowManager.LayoutParams.FLAG_FULLSCREEN);
         setContentView(R.layout.activity_linechart);
 
-        tvX = (TextView) findViewById(R.id.tvXMax);
-        tvY = (TextView) findViewById(R.id.tvYMax);
+        setTitle("CubicLineChartActivity");
 
-        mSeekBarX = (SeekBar) findViewById(R.id.seekBar1);
-        mSeekBarY = (SeekBar) findViewById(R.id.seekBar2);
+        tvX = findViewById(R.id.tvXMax);
+        tvY = findViewById(R.id.tvYMax);
 
-        mSeekBarX.setProgress(45);
-        mSeekBarY.setProgress(100);
+        seekBarX = findViewById(R.id.seekBar1);
+        seekBarY = findViewById(R.id.seekBar2);
 
-        mSeekBarY.setOnSeekBarChangeListener(this);
-        mSeekBarX.setOnSeekBarChangeListener(this);
-
-        mChart = (LineChart) findViewById(R.id.chart1);
-        mChart.setViewPortOffsets(0, 0, 0, 0);
-        mChart.setBackgroundColor(Color.rgb(104, 241, 175));
+        chart = findViewById(R.id.chart1);
+        chart.setViewPortOffsets(0, 0, 0, 0);
+        chart.setBackgroundColor(Color.rgb(104, 241, 175));
 
         // no description text
-        mChart.getDescription().setEnabled(false);
+        chart.getDescription().setEnabled(false);
 
         // enable touch gestures
-        mChart.setTouchEnabled(true);
+        chart.setTouchEnabled(true);
 
         // enable scaling and dragging
-        mChart.setDragEnabled(true);
-        mChart.setScaleEnabled(true);
+        chart.setDragEnabled(true);
+        chart.setScaleEnabled(true);
 
         // if disabled, scaling can be done on x- and y-axis separately
-        mChart.setPinchZoom(false);
+        chart.setPinchZoom(false);
 
-        mChart.setDrawGridBackground(false);
-        mChart.setMaxHighlightDistance(300);
-        
-        XAxis x = mChart.getXAxis();
+        chart.setDrawGridBackground(false);
+        chart.setMaxHighlightDistance(300);
+
+        XAxis x = chart.getXAxis();
         x.setEnabled(false);
-        
-        YAxis y = mChart.getAxisLeft();
-        y.setTypeface(mTfLight);
+
+        YAxis y = chart.getAxisLeft();
+        y.setTypeface(tfLight);
         y.setLabelCount(6, false);
         y.setTextColor(Color.WHITE);
         y.setPosition(YAxis.YAxisLabelPosition.INSIDE_CHART);
         y.setDrawGridLines(false);
         y.setAxisLineColor(Color.WHITE);
-        
-        mChart.getAxisRight().setEnabled(false);
+
+        chart.getAxisRight().setEnabled(false);
 
         // add data
-        setData(45, 100);
-        
-        mChart.getLegend().setEnabled(false);
-        
-        mChart.animateXY(2000, 2000);
+        seekBarY.setOnSeekBarChangeListener(this);
+        seekBarX.setOnSeekBarChangeListener(this);
 
-        // dont forget to refresh the drawing
-        mChart.invalidate();
-    }
+        // lower max, as cubic runs significantly slower than linear
+        seekBarX.setMax(700);
 
-    @Override
-    public boolean onCreateOptionsMenu(Menu menu) {
-        getMenuInflater().inflate(R.menu.line, menu);
-        return true;
-    }
+        seekBarX.setProgress(45);
+        seekBarY.setProgress(100);
 
-    @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
+        chart.getLegend().setEnabled(false);
 
-        switch (item.getItemId()) {
-            case R.id.actionToggleValues: {
-                for (IDataSet set : mChart.getData().getDataSets())
-                    set.setDrawValues(!set.isDrawValuesEnabled());
-
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionToggleHighlight: {
-                if(mChart.getData() != null) {
-                    mChart.getData().setHighlightEnabled(!mChart.getData().isHighlightEnabled());
-                    mChart.invalidate();
-                }
-                break;
-            }
-            case R.id.actionToggleFilled: {
-
-                List<ILineDataSet> sets = mChart.getData()
-                        .getDataSets();
-
-                for (ILineDataSet iSet : sets) {
-
-                    LineDataSet set = (LineDataSet) iSet;
-
-                    if (set.isDrawFilledEnabled())
-                        set.setDrawFilled(false);
-                    else
-                        set.setDrawFilled(true);
-                }
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionToggleCircles: {
-                List<ILineDataSet> sets = mChart.getData()
-                        .getDataSets();
-
-                for (ILineDataSet iSet : sets) {
-
-                    LineDataSet set = (LineDataSet) iSet;
-                    if (set.isDrawCirclesEnabled())
-                        set.setDrawCircles(false);
-                    else
-                        set.setDrawCircles(true);
-                }
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionToggleCubic: {
-                List<ILineDataSet> sets = mChart.getData()
-                        .getDataSets();
-
-                for (ILineDataSet iSet : sets) {
-
-                    LineDataSet set = (LineDataSet) iSet;
-                    set.setMode(set.getMode() == LineDataSet.Mode.CUBIC_BEZIER
-                            ? LineDataSet.Mode.LINEAR
-                            :  LineDataSet.Mode.CUBIC_BEZIER);
-                }
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionToggleStepped: {
-                List<ILineDataSet> sets = mChart.getData()
-                        .getDataSets();
-
-                for (ILineDataSet iSet : sets) {
-
-                    LineDataSet set = (LineDataSet) iSet;
-                    set.setMode(set.getMode() == LineDataSet.Mode.STEPPED
-                            ? LineDataSet.Mode.LINEAR
-                            :  LineDataSet.Mode.STEPPED);
-                }
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionToggleHorizontalCubic: {
-                List<ILineDataSet> sets = mChart.getData()
-                        .getDataSets();
-
-                for (ILineDataSet iSet : sets) {
-
-                    LineDataSet set = (LineDataSet) iSet;
-                    set.setMode(set.getMode() == LineDataSet.Mode.HORIZONTAL_BEZIER
-                            ? LineDataSet.Mode.LINEAR
-                            :  LineDataSet.Mode.HORIZONTAL_BEZIER);
-                }
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionTogglePinch: {
-                if (mChart.isPinchZoomEnabled())
-                    mChart.setPinchZoom(false);
-                else
-                    mChart.setPinchZoom(true);
-
-                mChart.invalidate();
-                break;
-            }
-            case R.id.actionToggleAutoScaleMinMax: {
-                mChart.setAutoScaleMinMaxEnabled(!mChart.isAutoScaleMinMaxEnabled());
-                mChart.notifyDataSetChanged();
-                break;
-            }
-            case R.id.animateX: {
-                mChart.animateX(3000);
-                break;
-            }
-            case R.id.animateY: {
-                mChart.animateY(3000);
-                break;
-            }
-            case R.id.animateXY: {
-                mChart.animateXY(3000, 3000);
-                break;
-            }
-            case R.id.actionSave: {
-                if (mChart.saveToPath("title" + System.currentTimeMillis(), "")) {
-                    Toast.makeText(getApplicationContext(), "Saving SUCCESSFUL!",
-                            Toast.LENGTH_SHORT).show();
-                } else
-                    Toast.makeText(getApplicationContext(), "Saving FAILED!", Toast.LENGTH_SHORT)
-                            .show();
-
-                // mChart.saveToGallery("title"+System.currentTimeMillis())
-                break;
-            }
-        }
-        return true;
-    }
-
-    @Override
-    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
-
-        tvX.setText("" + (mSeekBarX.getProgress() + 1));
-        tvY.setText("" + (mSeekBarY.getProgress()));
-
-        setData(mSeekBarX.getProgress() + 1, mSeekBarY.getProgress());
-
-        // redraw
-        mChart.invalidate();
-    }
-
-    @Override
-    public void onStartTrackingTouch(SeekBar seekBar) {
-        // TODO Auto-generated method stub
-
-    }
-
-    @Override
-    public void onStopTrackingTouch(SeekBar seekBar) {
-        // TODO Auto-generated method stub
+        chart.animateXY(2000, 2000);
 
+        // don't forget to refresh the drawing
+        chart.invalidate();
     }
 
     private void setData(int count, float range) {
 
-        ArrayList<Entry> yVals = new ArrayList<Entry>();
+        ArrayList<Entry> values = new ArrayList<>();
 
         for (int i = 0; i < count; i++) {
-            float mult = (range + 1);
-            float val = (float) (Math.random() * mult) + 20;// + (float)
-                                                           // ((mult *
-                                                           // 0.1) / 10);
-            yVals.add(new Entry(i, val));
+            float val = (float) (Math.random() * (range + 1)) + 20;
+            values.add(new Entry(i, val));
         }
 
         LineDataSet set1;
 
-        if (mChart.getData() != null &&
-                mChart.getData().getDataSetCount() > 0) {
-            set1 = (LineDataSet)mChart.getData().getDataSetByIndex(0);
-            set1.setValues(yVals);
-            mChart.getData().notifyDataChanged();
-            mChart.notifyDataSetChanged();
+        if (chart.getData() != null &&
+                chart.getData().getDataSetCount() > 0) {
+            set1 = (LineDataSet) chart.getData().getDataSetByIndex(0);
+            set1.setValues(values);
+            chart.getData().notifyDataChanged();
+            chart.notifyDataSetChanged();
         } else {
             // create a dataset and give it a type
-            set1 = new LineDataSet(yVals, "DataSet 1");
+            set1 = new LineDataSet(values, "DataSet 1");
 
             set1.setMode(LineDataSet.Mode.CUBIC_BEZIER);
             set1.setCubicIntensity(0.2f);
-            //set1.setDrawFilled(true);
+            set1.setDrawFilled(true);
             set1.setDrawCircles(false);
             set1.setLineWidth(1.8f);
             set1.setCircleRadius(4f);
@@ -297,18 +138,183 @@ public class CubicLineChartActivity extends DemoBase implements OnSeekBarChangeL
             set1.setFillFormatter(new IFillFormatter() {
                 @Override
                 public float getFillLinePosition(ILineDataSet dataSet, LineDataProvider dataProvider) {
-                    return -10;
+                    return chart.getAxisLeft().getAxisMinimum();
                 }
             });
 
-            // create a data object with the datasets
+            // create a data object with the data sets
             LineData data = new LineData(set1);
-            data.setValueTypeface(mTfLight);
+            data.setValueTypeface(tfLight);
             data.setValueTextSize(9f);
             data.setDrawValues(false);
 
             // set data
-            mChart.setData(data);
+            chart.setData(data);
         }
     }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.line, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+
+        switch (item.getItemId()) {
+            case R.id.viewGithub: {
+                Intent i = new Intent(Intent.ACTION_VIEW);
+                i.setData(Uri.parse("https://github.com/PhilJay/MPAndroidChart/blob/master/MPChartExample/src/com/xxmassdeveloper/mpchartexample/CubicLineChartActivity.java"));
+                startActivity(i);
+                break;
+            }
+            case R.id.actionToggleValues: {
+                for (IDataSet set : chart.getData().getDataSets())
+                    set.setDrawValues(!set.isDrawValuesEnabled());
+
+                chart.invalidate();
+                break;
+            }
+            case R.id.actionToggleHighlight: {
+                if(chart.getData() != null) {
+                    chart.getData().setHighlightEnabled(!chart.getData().isHighlightEnabled());
+                    chart.invalidate();
+                }
+                break;
+            }
+            case R.id.actionToggleFilled: {
+
+                List<ILineDataSet> sets = chart.getData()
+                        .getDataSets();
+
+                for (ILineDataSet iSet : sets) {
+
+                    LineDataSet set = (LineDataSet) iSet;
+
+                    if (set.isDrawFilledEnabled())
+                        set.setDrawFilled(false);
+                    else
+                        set.setDrawFilled(true);
+                }
+                chart.invalidate();
+                break;
+            }
+            case R.id.actionToggleCircles: {
+                List<ILineDataSet> sets = chart.getData()
+                        .getDataSets();
+
+                for (ILineDataSet iSet : sets) {
+
+                    LineDataSet set = (LineDataSet) iSet;
+                    if (set.isDrawCirclesEnabled())
+                        set.setDrawCircles(false);
+                    else
+                        set.setDrawCircles(true);
+                }
+                chart.invalidate();
+                break;
+            }
+            case R.id.actionToggleCubic: {
+                List<ILineDataSet> sets = chart.getData()
+                        .getDataSets();
+
+                for (ILineDataSet iSet : sets) {
+
+                    LineDataSet set = (LineDataSet) iSet;
+                    set.setMode(set.getMode() == LineDataSet.Mode.CUBIC_BEZIER
+                            ? LineDataSet.Mode.LINEAR
+                            :  LineDataSet.Mode.CUBIC_BEZIER);
+                }
+                chart.invalidate();
+                break;
+            }
+            case R.id.actionToggleStepped: {
+                List<ILineDataSet> sets = chart.getData()
+                        .getDataSets();
+
+                for (ILineDataSet iSet : sets) {
+
+                    LineDataSet set = (LineDataSet) iSet;
+                    set.setMode(set.getMode() == LineDataSet.Mode.STEPPED
+                            ? LineDataSet.Mode.LINEAR
+                            :  LineDataSet.Mode.STEPPED);
+                }
+                chart.invalidate();
+                break;
+            }
+            case R.id.actionToggleHorizontalCubic: {
+                List<ILineDataSet> sets = chart.getData()
+                        .getDataSets();
+
+                for (ILineDataSet iSet : sets) {
+
+                    LineDataSet set = (LineDataSet) iSet;
+                    set.setMode(set.getMode() == LineDataSet.Mode.HORIZONTAL_BEZIER
+                            ? LineDataSet.Mode.LINEAR
+                            :  LineDataSet.Mode.HORIZONTAL_BEZIER);
+                }
+                chart.invalidate();
+                break;
+            }
+            case R.id.actionTogglePinch: {
+                if (chart.isPinchZoomEnabled())
+                    chart.setPinchZoom(false);
+                else
+                    chart.setPinchZoom(true);
+
+                chart.invalidate();
+                break;
+            }
+            case R.id.actionToggleAutoScaleMinMax: {
+                chart.setAutoScaleMinMaxEnabled(!chart.isAutoScaleMinMaxEnabled());
+                chart.notifyDataSetChanged();
+                break;
+            }
+            case R.id.animateX: {
+                chart.animateX(2000);
+                break;
+            }
+            case R.id.animateY: {
+                chart.animateY(2000);
+                break;
+            }
+            case R.id.animateXY: {
+                chart.animateXY(2000, 2000);
+                break;
+            }
+            case R.id.actionSave: {
+                if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
+                    saveToGallery();
+                } else {
+                    requestStoragePermission(chart);
+                }
+                break;
+            }
+        }
+        return true;
+    }
+
+    @Override
+    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+
+        tvX.setText(String.valueOf(seekBarX.getProgress()));
+        tvY.setText(String.valueOf(seekBarY.getProgress()));
+
+        setData(seekBarX.getProgress(), seekBarY.getProgress());
+
+        // redraw
+        chart.invalidate();
+    }
+
+    @Override
+    protected void saveToGallery() {
+        saveToGallery(chart, "CubicLineChartActivity");
+    }
+
+    @Override
+    public void onStartTrackingTouch(SeekBar seekBar) {}
+
+    @Override
+    public void onStopTrackingTouch(SeekBar seekBar) {}
 }

MPChartExample/src/main/java/com/xxmassdeveloper/mpchartexample/DrawChartActivity.java

@@ -1,8 +1,10 @@
-
+// TODO: Finish and add to main activity list
 package com.xxmassdeveloper.mpchartexample;
 
-import android.graphics.Typeface;
+import android.Manifest;
+import android.content.pm.PackageManager;
 import android.os.Bundle;
+import androidx.core.content.ContextCompat;
 import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
@@ -28,13 +30,13 @@ import java.util.List;
 /**
  * This Activity demonstrates drawing into the Chart with the finger. Both line,
  * bar and scatter charts can be used for drawing.
- * 
+ *
  * @author Philipp Jahoda
  */
 public class DrawChartActivity extends DemoBase implements OnChartValueSelectedListener,
         OnDrawListener {
 
-    private LineChart mChart;
+    private LineChart chart;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -43,49 +45,49 @@ public class DrawChartActivity extends DemoBase implements OnChartValueSelectedL
                 WindowManager.LayoutParams.FLAG_FULLSCREEN);
         setContentView(R.layout.activity_draw_chart);
 
-        mChart = (LineChart) findViewById(R.id.chart1);
+        setTitle("DrawChartActivity");
+
+        chart = findViewById(R.id.chart1);
 
         // listener for selecting and drawing
-        mChart.setOnChartValueSelectedListener(this);
-        mChart.setOnDrawListener(this);
+        chart.setOnChartValueSelectedListener(this);
+        chart.setOnDrawListener(this);
 
-        // if disabled, drawn datasets with the finger will not be automatically
+        // if disabled, drawn data sets with the finger will not be automatically
         // finished
-        // mChart.setAutoFinish(true);
-        mChart.setDrawGridBackground(false);
+        // chart.setAutoFinish(true);
+        chart.setDrawGridBackground(false);
 
         // add dummy-data to the chart
         initWithDummyData();
 
-        Typeface tf = Typeface.createFromAsset(getAssets(), "OpenSans-Regular.ttf");
-
-        XAxis xl = mChart.getXAxis();
-        xl.setTypeface(tf);
+        XAxis xl = chart.getXAxis();
+        xl.setTypeface(tfRegular);
         xl.setAvoidFirstLastClipping(true);
 
-        YAxis yl = mChart.getAxisLeft();
-        yl.setTypeface(tf);
+        YAxis yl = chart.getAxisLeft();
+        yl.setTypeface(tfRegular);
 
-        mChart.getLegend().setEnabled(false);
+        chart.getLegend().setEnabled(false);
 
-        // mChart.setYRange(-40f, 40f, true);
+        // chart.setYRange(-40f, 40f, true);
         // call this to reset the changed y-range
-        // mChart.resetYRange(true);
+        // chart.resetYRange(true);
     }
 
     private void initWithDummyData() {
 
-        ArrayList<Entry> yVals = new ArrayList<Entry>();
+        ArrayList<Entry> values = new ArrayList<>();
 
         // create a dataset and give it a type (0)
-        LineDataSet set1 = new LineDataSet(yVals, "DataSet");
+        LineDataSet set1 = new LineDataSet(values, "DataSet");
         set1.setLineWidth(3f);
         set1.setCircleRadius(5f);
 
-        // create a data object with the datasets
+        // create a data object with the data sets
         LineData data = new LineData(set1);
 
-        mChart.setData(data);
+        chart.setData(data);
     }
 
     @Override
@@ -99,7 +101,7 @@ public class DrawChartActivity extends DemoBase implements OnChartValueSelectedL
 
         switch (item.getItemId()) {
             case R.id.actionToggleValues: {
-                List<ILineDataSet> sets = mChart.getData()
+                List<ILineDataSet> sets = chart.getData()
                         .getDataSets();
 
                 for (ILineDataSet iSet : sets) {
@@ -108,39 +110,47 @@ public class DrawChartActivity extends DemoBase implements OnChartValueSelectedL
                     set.setDrawValues(!set.isDrawValuesEnabled());
                 }
 
-                mChart.invalidate();
+                chart.invalidate();
                 break;
             }
             case R.id.actionToggleHighlight: {
-                if(mChart.getData() != null) {
-                    mChart.getData().setHighlightEnabled(!mChart.getData().isHighlightEnabled());
-                    mChart.invalidate();
+                if(chart.getData() != null) {
+                    chart.getData().setHighlightEnabled(!chart.getData().isHighlightEnabled());
+                    chart.invalidate();
                 }
                 break;
             }
             case R.id.actionTogglePinch: {
-                if (mChart.isPinchZoomEnabled())
-                    mChart.setPinchZoom(false);
+                if (chart.isPinchZoomEnabled())
+                    chart.setPinchZoom(false);
                 else
-                    mChart.setPinchZoom(true);
+                    chart.setPinchZoom(true);
 
-                mChart.invalidate();
+                chart.invalidate();
                 break;
             }
             case R.id.actionToggleAutoScaleMinMax: {
-                mChart.setAutoScaleMinMaxEnabled(!mChart.isAutoScaleMinMaxEnabled());
-                mChart.notifyDataSetChanged();
+                chart.setAutoScaleMinMaxEnabled(!chart.isAutoScaleMinMaxEnabled());
+                chart.notifyDataSetChanged();
                 break;
             }
             case R.id.actionSave: {
-                // mChart.saveToGallery("title"+System.currentTimeMillis());
-                mChart.saveToPath("title" + System.currentTimeMillis(), "");
+                if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
+                    saveToGallery();
+                } else {
+                    requestStoragePermission(chart);
+                }
                 break;
             }
         }
         return true;
     }
 
+    @Override
+    protected void saveToGallery() {
+        saveToGallery(chart, "DrawChartActivity");
+    }
+
     @Override
     public void onValueSelected(Entry e, Highlight h) {
         Log.i("VAL SELECTED",
@@ -164,7 +174,7 @@ public class DrawChartActivity extends DemoBase implements OnChartValueSelectedL
         Log.i(Chart.LOG_TAG, "DataSet drawn. " + dataSet.toSimpleString());
 
         // prepare the legend again
-        mChart.getLegendRenderer().computeLegend(mChart.getData());
+        chart.getLegendRenderer().computeLegend(chart.getData());
     }
 
     @Override

MPChartExample/src/main/java/com/xxmassdeveloper/mpchartexample/DynamicalAddingActivity.java

@@ -1,8 +1,13 @@
 
 package com.xxmassdeveloper.mpchartexample;
 
+import android.Manifest;
+import android.content.Intent;
+import android.content.pm.PackageManager;
 import android.graphics.Color;
+import android.net.Uri;
 import android.os.Bundle;
+import androidx.core.content.ContextCompat;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.WindowManager;
@@ -23,7 +28,7 @@ import java.util.ArrayList;
 
 public class DynamicalAddingActivity extends DemoBase implements OnChartValueSelectedListener {
 
-    private LineChart mChart;
+    private LineChart chart;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -32,24 +37,30 @@ public class DynamicalAddingActivity extends DemoBase implements OnChartValueSel
                 WindowManager.LayoutParams.FLAG_FULLSCREEN);
         setContentView(R.layout.activity_linechart_noseekbar);
 
-        mChart = (LineChart) findViewById(R.id.chart1);
-        mChart.setOnChartValueSelectedListener(this);
-        mChart.setDrawGridBackground(false);
-        mChart.getDescription().setEnabled(false);
+        setTitle("DynamicalAddingActivity");
 
-        // add an empty data object
-        mChart.setData(new LineData());
-//        mChart.getXAxis().setDrawLabels(false);
-//        mChart.getXAxis().setDrawGridLines(false);
+        chart = findViewById(R.id.chart1);
+        chart.setOnChartValueSelectedListener(this);
+        chart.setDrawGridBackground(false);
+        chart.getDescription().setEnabled(false);
+        chart.setNoDataText("No chart data available. Use the menu to add entries and data sets!");
 
-        mChart.invalidate();
+//        chart.getXAxis().setDrawLabels(false);
+//        chart.getXAxis().setDrawGridLines(false);
+
+        chart.invalidate();
     }
 
-    int[] mColors = ColorTemplate.VORDIPLOM_COLORS;
+    private final int[] colors = ColorTemplate.VORDIPLOM_COLORS;
 
     private void addEntry() {
 
-        LineData data = mChart.getData();
+        LineData data = chart.getData();
+
+        if (data == null) {
+            data = new LineData();
+            chart.setData(data);
+        }
 
         ILineDataSet set = data.getDataSetByIndex(0);
         // set.addEntry(...); // can be called as well
@@ -61,25 +72,26 @@ public class DynamicalAddingActivity extends DemoBase implements OnChartValueSel
 
         // choose a random dataSet
         int randomDataSetIndex = (int) (Math.random() * data.getDataSetCount());
-        float yValue = (float) (Math.random() * 10) + 50f;
+        ILineDataSet randomSet = data.getDataSetByIndex(randomDataSetIndex);
+        float value = (float) (Math.random() * 50) + 50f * (randomDataSetIndex + 1);
 
-        data.addEntry(new Entry(data.getDataSetByIndex(randomDataSetIndex).getEntryCount(), yValue), randomDataSetIndex);
+        data.addEntry(new Entry(randomSet.getEntryCount(), value), randomDataSetIndex);
         data.notifyDataChanged();
 
         // let the chart know it's data has changed
-        mChart.notifyDataSetChanged();
+        chart.notifyDataSetChanged();
 
-        mChart.setVisibleXRangeMaximum(6);
-        //mChart.setVisibleYRangeMaximum(15, AxisDependency.LEFT);
-//            
+        chart.setVisibleXRangeMaximum(6);
+        //chart.setVisibleYRangeMaximum(15, AxisDependency.LEFT);
+//
 //            // this automatically refreshes the chart (calls invalidate())
-        mChart.moveViewTo(data.getEntryCount() - 7, 50f, AxisDependency.LEFT);
+        chart.moveViewTo(data.getEntryCount() - 7, 50f, AxisDependency.LEFT);
 
     }
 
     private void removeLastEntry() {
 
-        LineData data = mChart.getData();
+        LineData data = chart.getData();
 
         if (data != null) {
 
@@ -93,31 +105,33 @@ public class DynamicalAddingActivity extends DemoBase implements OnChartValueSel
                 // or remove by index
                 // mData.removeEntryByXValue(xIndex, dataSetIndex);
                 data.notifyDataChanged();
-                mChart.notifyDataSetChanged();
-                mChart.invalidate();
+                chart.notifyDataSetChanged();
+                chart.invalidate();
             }
         }
     }
 
     private void addDataSet() {
 
-        LineData data = mChart.getData();
-
-        if (data != null) {
+        LineData data = chart.getData();
 
+        if (data == null) {
+            chart.setData(new LineData());
+        } else {
             int count = (data.getDataSetCount() + 1);
+            int amount = data.getDataSetByIndex(0).getEntryCount();
 
-            ArrayList<Entry> yVals = new ArrayList<Entry>();
+            ArrayList<Entry> values = new ArrayList<>();
 
-            for (int i = 0; i < data.getEntryCount(); i++) {
-                yVals.add(new Entry(i, (float) (Math.random() * 50f) + 50f * count));
+            for (int i = 0; i < amount; i++) {
+                values.add(new Entry(i, (float) (Math.random() * 50f) + 50f * count));
             }
 
-            LineDataSet set = new LineDataSet(yVals, "DataSet " + count);
+            LineDataSet set = new LineDataSet(values, "DataSet " + count);
             set.setLineWidth(2.5f);
             set.setCircleRadius(4.5f);
 
-            int color = mColors[count % mColors.length];
+            int color = colors[count % colors.length];
 
             set.setColor(color);
             set.setCircleColor(color);
@@ -127,74 +141,24 @@ public class DynamicalAddingActivity extends DemoBase implements OnChartValueSel
 
             data.addDataSet(set);
             data.notifyDataChanged();
-            mChart.notifyDataSetChanged();
-            mChart.invalidate();
+            chart.notifyDataSetChanged();
+            chart.invalidate();
         }
     }
 
     private void removeDataSet() {
 
-        LineData data = mChart.getData();
+        LineData data = chart.getData();
 
         if (data != null) {
 
             data.removeDataSet(data.getDataSetByIndex(data.getDataSetCount() - 1));
 
-            mChart.notifyDataSetChanged();
-            mChart.invalidate();
+            chart.notifyDataSetChanged();
+            chart.invalidate();
         }
     }
 
-    @Override
-    public void onValueSelected(Entry e, Highlight h) {
-        Toast.makeText(this, e.toString(), Toast.LENGTH_SHORT).show();
-    }
-
-    @Override
-    public void onNothingSelected() {
-
-    }
-
-    @Override
-    public boolean onCreateOptionsMenu(Menu menu) {
-        getMenuInflater().inflate(R.menu.dynamical, menu);
-        return true;
-    }
-
-    @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
-
-        switch (item.getItemId()) {
-            case R.id.actionAddEntry:
-                addEntry();
-                Toast.makeText(this, "Entry added!", Toast.LENGTH_SHORT).show();
-                break;
-            case R.id.actionRemoveEntry:
-                removeLastEntry();
-                Toast.makeText(this, "Entry removed!", Toast.LENGTH_SHORT).show();
-                break;
-            case R.id.actionAddDataSet:
-                addDataSet();
-                Toast.makeText(this, "DataSet added!", Toast.LENGTH_SHORT).show();
-                break;
-            case R.id.actionRemoveDataSet:
-                removeDataSet();
-                Toast.makeText(this, "DataSet removed!", Toast.LENGTH_SHORT).show();
-                break;
-            case R.id.actionAddEmptyLineData:
-                mChart.setData(new LineData());
-                mChart.invalidate();
-                Toast.makeText(this, "Empty data added!", Toast.LENGTH_SHORT).show();
-                break;
-            case R.id.actionClear:
-                mChart.clear();
-                Toast.makeText(this, "Chart cleared!", Toast.LENGTH_SHORT).show();
-                break;
-        }
-
-        return true;
-    }
-
     private LineDataSet createSet() {
 
         LineDataSet set = new LineDataSet(null, "DataSet 1");
@@ -208,4 +172,71 @@ public class DynamicalAddingActivity extends DemoBase implements OnChartValueSel
 
         return set;
     }
+
+    @Override
+    public void onValueSelected(Entry e, Highlight h) {
+        Toast.makeText(this, e.toString(), Toast.LENGTH_SHORT).show();
+    }
+
+    @Override
+    public void onNothingSelected() {}
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.dynamical, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+
+        switch (item.getItemId()) {
+            case R.id.viewGithub: {
+                Intent i = new Intent(Intent.ACTION_VIEW);
+                i.setData(Uri.parse("https://github.com/PhilJay/MPAndroidChart/blob/master/MPChartExample/src/com/xxmassdeveloper/mpchartexample/DynamicalAddingActivity.java"));
+                startActivity(i);
+                break;
+            }
+            case R.id.actionAddEntry: {
+                addEntry();
+                Toast.makeText(this, "Entry added!", Toast.LENGTH_SHORT).show();
+                break;
+            }
+            case R.id.actionRemoveEntry: {
+                removeLastEntry();
+                Toast.makeText(this, "Entry removed!", Toast.LENGTH_SHORT).show();
+                break;
+            }
+            case R.id.actionAddDataSet: {
+                addDataSet();
+                Toast.makeText(this, "DataSet added!", Toast.LENGTH_SHORT).show();
+                break;
+            }
+            case R.id.actionRemoveDataSet: {
+                removeDataSet();
+                Toast.makeText(this, "DataSet removed!", Toast.LENGTH_SHORT).show();
+                break;
+            }
+            case R.id.actionClear: {
+                chart.clear();
+                Toast.makeText(this, "Chart cleared!", Toast.LENGTH_SHORT).show();
+                break;
+            }
+            case R.id.actionSave: {
+                if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
+                    saveToGallery();
+                } else {
+                    requestStoragePermission(chart);
+                }
+                break;
+            }
+        }
+
+        return true;
+    }
+
+    @Override
+    protected void saveToGallery() {
+        saveToGallery(chart, "DynamicalAddingActivity");
+    }
 }

MPChartExample/src/main/java/com/xxmassdeveloper/mpchartexample/FilledLineActivity.java

@@ -1,8 +1,12 @@
 
 package com.xxmassdeveloper.mpchartexample;
 
+import android.content.Intent;
 import android.graphics.Color;
+import android.net.Uri;
 import android.os.Bundle;
+import android.view.Menu;
+import android.view.MenuItem;
 import android.view.WindowManager;
 
 import com.github.mikephil.charting.charts.LineChart;
@@ -19,10 +23,19 @@ import com.xxmassdeveloper.mpchartexample.notimportant.DemoBase;
 
 import java.util.ArrayList;
 
+/**
+ * This works by inverting the background and desired "fill" color. First, we draw the fill color
+ * that we want between the lines as the actual background of the chart. Then, we fill the area
+ * above the highest line and the area under the lowest line with the desired background color.
+ *
+ * This method makes it look like we filled the area between the lines, but really we are filling
+ * the area OUTSIDE the lines!
+ */
+@SuppressWarnings("SameParameterValue")
 public class FilledLineActivity extends DemoBase {
 
-    private LineChart mChart;
-    private int mFillColor = Color.argb(150, 51, 181, 229);
+    private LineChart chart;
+    private final int fillColor = Color.argb(150, 51, 181, 229);
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -31,73 +44,71 @@ public class FilledLineActivity extends DemoBase {
                 WindowManager.LayoutParams.FLAG_FULLSCREEN);
         setContentView(R.layout.activity_linechart_noseekbar);
 
-        mChart = (LineChart) findViewById(R.id.chart1);
-        mChart.setBackgroundColor(Color.WHITE);
-        mChart.setGridBackgroundColor(mFillColor);
-        mChart.setDrawGridBackground(true);
+        setTitle("FilledLineActivity");
 
-        mChart.setDrawBorders(true);
+        chart = findViewById(R.id.chart1);
+        chart.setBackgroundColor(Color.WHITE);
+        chart.setGridBackgroundColor(fillColor);
+        chart.setDrawGridBackground(true);
+
+        chart.setDrawBorders(true);
 
         // no description text
-        mChart.getDescription().setEnabled(false);
+        chart.getDescription().setEnabled(false);
 
         // if disabled, scaling can be done on x- and y-axis separately
-        mChart.setPinchZoom(false);
+        chart.setPinchZoom(false);
 
-        Legend l = mChart.getLegend();
+        Legend l = chart.getLegend();
         l.setEnabled(false);
 
-        XAxis xAxis = mChart.getXAxis();
+        XAxis xAxis = chart.getXAxis();
         xAxis.setEnabled(false);
 
-        YAxis leftAxis = mChart.getAxisLeft();
+        YAxis leftAxis = chart.getAxisLeft();
         leftAxis.setAxisMaximum(900f);
         leftAxis.setAxisMinimum(-250f);
         leftAxis.setDrawAxisLine(false);
         leftAxis.setDrawZeroLine(false);
         leftAxis.setDrawGridLines(false);
 
-        mChart.getAxisRight().setEnabled(false);
+        chart.getAxisRight().setEnabled(false);
 
         // add data
         setData(100, 60);
 
-        mChart.invalidate();
+        chart.invalidate();
     }
 
     private void setData(int count, float range) {
 
-        ArrayList<Entry> yVals1 = new ArrayList<Entry>();
+        ArrayList<Entry> values1 = new ArrayList<>();
 
         for (int i = 0; i < count; i++) {
-            float val = (float) (Math.random() * range) + 50;// + (float)
-            // ((mult *
-            // 0.1) / 10);
-            yVals1.add(new Entry(i, val));
+            float val = (float) (Math.random() * range) + 50;
+            values1.add(new Entry(i, val));
         }
 
-        ArrayList<Entry> yVals2 = new ArrayList<Entry>();
+        ArrayList<Entry> values2 = new ArrayList<>();
 
         for (int i = 0; i < count; i++) {
-            float val = (float) (Math.random() * range) + 450;// + (float)
-            // ((mult *
-            // 0.1) / 10);
-            yVals2.add(new Entry(i, val));
+            float val = (float) (Math.random() * range) + 450;
+            values2.add(new Entry(i, val));
         }
 
         LineDataSet set1, set2;
 
-        if (mChart.getData() != null &&
-                mChart.getData().getDataSetCount() > 0) {
-            set1 = (LineDataSet)mChart.getData().getDataSetByIndex(0);
-            set2 = (LineDataSet)mChart.getData().getDataSetByIndex(1);
-            set1.setValues(yVals1);
-            set2.setValues(yVals2);
-            mChart.getData().notifyDataChanged();
-            mChart.notifyDataSetChanged();
+        if (chart.getData() != null &&
+                chart.getData().getDataSetCount() > 0) {
+            set1 = (LineDataSet) chart.getData().getDataSetByIndex(0);
+            set2 = (LineDataSet) chart.getData().getDataSetByIndex(1);
+            set1.setValues(values1);
+            set2.setValues(values2);
+            chart.getData().notifyDataChanged();
+            chart.notifyDataSetChanged();
         } else {
             // create a dataset and give it a type
-            set1 = new LineDataSet(yVals1, "DataSet 1");
+            set1 = new LineDataSet(values1, "DataSet 1");
 
             set1.setAxisDependency(YAxis.AxisDependency.LEFT);
             set1.setColor(Color.rgb(255, 241, 46));
@@ -112,12 +123,14 @@ public class FilledLineActivity extends DemoBase {
             set1.setFillFormatter(new IFillFormatter() {
                 @Override
                 public float getFillLinePosition(ILineDataSet dataSet, LineDataProvider dataProvider) {
-                    return mChart.getAxisLeft().getAxisMinimum();
+                    // change the return value here to better understand the effect
+                    // return 0;
+                    return chart.getAxisLeft().getAxisMinimum();
                 }
             });
 
             // create a dataset and give it a type
-            set2 = new LineDataSet(yVals2, "DataSet 2");
+            set2 = new LineDataSet(values2, "DataSet 2");
             set2.setAxisDependency(YAxis.AxisDependency.LEFT);
             set2.setColor(Color.rgb(255, 241, 46));
             set2.setDrawCircles(false);
@@ -131,20 +144,46 @@ public class FilledLineActivity extends DemoBase {
             set2.setFillFormatter(new IFillFormatter() {
                 @Override
                 public float getFillLinePosition(ILineDataSet dataSet, LineDataProvider dataProvider) {
-                    return mChart.getAxisLeft().getAxisMaximum();
+                    // change the return value here to better understand the effect
+                    // return 600;
+                    return chart.getAxisLeft().getAxisMaximum();
                 }
             });
 
-            ArrayList<ILineDataSet> dataSets = new ArrayList<ILineDataSet>();
-            dataSets.add(set1); // add the datasets
+            ArrayList<ILineDataSet> dataSets = new ArrayList<>();
+            dataSets.add(set1); // add the data sets
             dataSets.add(set2);
 
-            // create a data object with the datasets
+            // create a data object with the data sets
             LineData data = new LineData(dataSets);
             data.setDrawValues(false);
 
             // set data
-            mChart.setData(data);
+            chart.setData(data);
         }
     }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.only_github, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+
+        switch (item.getItemId()) {
+            case R.id.viewGithub: {
+                Intent i = new Intent(Intent.ACTION_VIEW);
+                i.setData(Uri.parse("https://github.com/PhilJay/MPAndroidChart/blob/master/MPChartExample/src/com/xxmassdeveloper/mpchartexample/FilledLineActivity.java"));
+                startActivity(i);
+                break;
+            }
+        }
+
+        return true;
+    }
+
+    @Override
+    public void saveToGallery() { /* Intentionally left empty */ }
 }

MPChartExample/src/main/java/com/xxmassdeveloper/mpchartexample/HalfPieChartActivity.java

@@ -1,22 +1,24 @@
 
 package com.xxmassdeveloper.mpchartexample;
 
+import android.content.Intent;
 import android.graphics.Color;
-import android.graphics.Point;
 import android.graphics.Typeface;
+import android.net.Uri;
 import android.os.Bundle;
 import android.text.SpannableString;
 import android.text.style.ForegroundColorSpan;
 import android.text.style.RelativeSizeSpan;
 import android.text.style.StyleSpan;
-import android.view.Display;
+import android.util.DisplayMetrics;
+import android.view.Menu;
+import android.view.MenuItem;
 import android.view.WindowManager;
 import android.widget.RelativeLayout;
 
 import com.github.mikephil.charting.animation.Easing;
 import com.github.mikephil.charting.charts.PieChart;
 import com.github.mikephil.charting.components.Legend;
-import com.github.mikephil.charting.components.Legend.LegendPosition;
 import com.github.mikephil.charting.data.PieData;
 import com.github.mikephil.charting.data.PieDataSet;
 import com.github.mikephil.charting.data.PieEntry;
@@ -26,9 +28,10 @@ import com.xxmassdeveloper.mpchartexample.notimportant.DemoBase;
 
 import java.util.ArrayList;
 
+@SuppressWarnings("SameParameterValue")
 public class HalfPieChartActivity extends DemoBase {
 
-    private PieChart mChart;
+    private PieChart chart;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -37,40 +40,42 @@ public class HalfPieChartActivity extends DemoBase {
                 WindowManager.LayoutParams.FLAG_FULLSCREEN);
         setContentView(R.layout.activity_piechart_half);
 
-        mChart = (PieChart) findViewById(R.id.chart1);
-        mChart.setBackgroundColor(Color.WHITE);
+        setTitle("HalfPieChartActivity");
+
+        chart = findViewById(R.id.chart1);
+        chart.setBackgroundColor(Color.WHITE);
 
         moveOffScreen();
 
-        mChart.setUsePercentValues(true);
-        mChart.getDescription().setEnabled(false);
+        chart.setUsePercentValues(true);
+        chart.getDescription().setEnabled(false);
 
-        mChart.setCenterTextTypeface(mTfLight);
-        mChart.setCenterText(generateCenterSpannableText());
+        chart.setCenterTextTypeface(tfLight);
+        chart.setCenterText(generateCenterSpannableText());
 
-        mChart.setDrawHoleEnabled(true);
-        mChart.setHoleColor(Color.WHITE);
+        chart.setDrawHoleEnabled(true);
+        chart.setHoleColor(Color.WHITE);
 
-        mChart.setTransparentCircleColor(Color.WHITE);
-        mChart.setTransparentCircleAlpha(110);
+        chart.setTransparentCircleColor(Color.WHITE);
+        chart.setTransparentCircleAlpha(110);
 
-        mChart.setHoleRadius(58f);
-        mChart.setTransparentCircleRadius(61f);
+        chart.setHoleRadius(58f);
+        chart.setTransparentCircleRadius(61f);
 
-        mChart.setDrawCenterText(true);
+        chart.setDrawCenterText(true);
 
-        mChart.setRotationEnabled(false);
-        mChart.setHighlightPerTapEnabled(true);
+        chart.setRotationEnabled(false);
+        chart.setHighlightPerTapEnabled(true);
 
-        mChart.setMaxAngle(180f); // HALF CHART
-        mChart.setRotationAngle(180f);
-        mChart.setCenterTextOffset(0, -20);
+        chart.setMaxAngle(180f); // HALF CHART
+        chart.setRotationAngle(180f);
+        chart.setCenterTextOffset(0, -20);
 
         setData(4, 100);
 
-        mChart.animateY(1400, Easing.EasingOption.EaseInOutQuad);
+        chart.animateY(1400, Easing.EaseInOutQuad);
 
-        Legend l = mChart.getLegend();
+        Legend l = chart.getLegend();
         l.setVerticalAlignment(Legend.LegendVerticalAlignment.TOP);
         l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.CENTER);
         l.setOrientation(Legend.LegendOrientation.HORIZONTAL);
@@ -80,17 +85,17 @@ public class HalfPieChartActivity extends DemoBase {
         l.setYOffset(0f);
 
         // entry label styling
-        mChart.setEntryLabelColor(Color.WHITE);
-        mChart.setEntryLabelTypeface(mTfRegular);
-        mChart.setEntryLabelTextSize(12f);
+        chart.setEntryLabelColor(Color.WHITE);
+        chart.setEntryLabelTypeface(tfRegular);
+        chart.setEntryLabelTextSize(12f);
     }
 
     private void setData(int count, float range) {
 
-        ArrayList<PieEntry> values = new ArrayList<PieEntry>();
+        ArrayList<PieEntry> values = new ArrayList<>();
 
         for (int i = 0; i < count; i++) {
-            values.add(new PieEntry((float) ((Math.random() * range) + range / 5), mParties[i % mParties.length]));
+            values.add(new PieEntry((float) ((Math.random() * range) + range / 5), parties[i % parties.length]));
         }
 
         PieDataSet dataSet = new PieDataSet(values, "Election Results");
@@ -104,10 +109,10 @@ public class HalfPieChartActivity extends DemoBase {
         data.setValueFormatter(new PercentFormatter());
         data.setValueTextSize(11f);
         data.setValueTextColor(Color.WHITE);
-        data.setValueTypeface(mTfLight);
-        mChart.setData(data);
+        data.setValueTypeface(tfLight);
+        chart.setData(data);
 
-        mChart.invalidate();
+        chart.invalidate();
     }
 
     private SpannableString generateCenterSpannableText() {
@@ -124,14 +129,40 @@ public class HalfPieChartActivity extends DemoBase {
 
     private void moveOffScreen() {
 
-        Display display = getWindowManager().getDefaultDisplay();
-        int height = display.getHeight();  // deprecated
+        DisplayMetrics displayMetrics = new DisplayMetrics();
+        getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
+
+        int height = displayMetrics.heightPixels;
 
         int offset = (int)(height * 0.65); /* percent to move */
 
         RelativeLayout.LayoutParams rlParams =
-                (RelativeLayout.LayoutParams)mChart.getLayoutParams();
+                (RelativeLayout.LayoutParams) chart.getLayoutParams();
         rlParams.setMargins(0, 0, 0, -offset);
-        mChart.setLayoutParams(rlParams);
+        chart.setLayoutParams(rlParams);
     }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.only_github, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+
+        switch (item.getItemId()) {
+            case R.id.viewGithub: {
+                Intent i = new Intent(Intent.ACTION_VIEW);
+                i.setData(Uri.parse("https://github.com/PhilJay/MPAndroidChart/blob/master/MPChartExample/src/com/xxmassdeveloper/mpchartexample/HalfPieChartActivity.java"));
+                startActivity(i);
+                break;
+            }
+        }
+
+        return true;
+    }
+
+    @Override
+    public void saveToGallery() { /* Intentionally left empty */ }
 }

MPChartExample/src/main/java/com/xxmassdeveloper/mpchartexample/HorizontalBarChartActivity.java

@@ -1,9 +1,13 @@
 
 package com.xxmassdeveloper.mpchartexample;
 
-import android.annotation.SuppressLint;
+import android.Manifest;
+import android.content.Intent;
+import android.content.pm.PackageManager;
 import android.graphics.RectF;
+import android.net.Uri;
 import android.os.Bundle;
+import androidx.core.content.ContextCompat;
 import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
@@ -11,11 +15,9 @@ import android.view.WindowManager;
 import android.widget.SeekBar;
 import android.widget.SeekBar.OnSeekBarChangeListener;
 import android.widget.TextView;
-import android.widget.Toast;
 
 import com.github.mikephil.charting.charts.HorizontalBarChart;
 import com.github.mikephil.charting.components.Legend;
-import com.github.mikephil.charting.components.Legend.LegendPosition;
 import com.github.mikephil.charting.components.XAxis;
 import com.github.mikephil.charting.components.XAxis.XAxisPosition;
 import com.github.mikephil.charting.components.YAxis;
@@ -35,8 +37,8 @@ import java.util.List;
 public class HorizontalBarChartActivity extends DemoBase implements OnSeekBarChangeListener,
         OnChartValueSelectedListener {
 
-    protected HorizontalBarChart mChart;
-    private SeekBar mSeekBarX, mSeekBarY;
+    private HorizontalBarChart chart;
+    private SeekBar seekBarX, seekBarY;
     private TextView tvX, tvY;
 
     @Override
@@ -46,67 +48,68 @@ public class HorizontalBarChartActivity extends DemoBase implements OnSeekBarCha
                 WindowManager.LayoutParams.FLAG_FULLSCREEN);
         setContentView(R.layout.activity_horizontalbarchart);
 
-        tvX = (TextView) findViewById(R.id.tvXMax);
-        tvY = (TextView) findViewById(R.id.tvYMax);
+        setTitle("HorizontalBarChartActivity");
 
-        mSeekBarX = (SeekBar) findViewById(R.id.seekBar1);
-        mSeekBarY = (SeekBar) findViewById(R.id.seekBar2);
+        tvX = findViewById(R.id.tvXMax);
+        tvY = findViewById(R.id.tvYMax);
 
-        mChart = (HorizontalBarChart) findViewById(R.id.chart1);
-        mChart.setOnChartValueSelectedListener(this);
-        // mChart.setHighlightEnabled(false);
+        seekBarX = findViewById(R.id.seekBar1);
+        seekBarY = findViewById(R.id.seekBar2);
 
-        mChart.setDrawBarShadow(false);
+        seekBarY.setOnSeekBarChangeListener(this);
+        seekBarX.setOnSeekBarChangeListener(this);
 
-        mChart.setDrawValueAboveBar(true);
+        chart = findViewById(R.id.chart1);
+        chart.setOnChartValueSelectedListener(this);
+        // chart.setHighlightEnabled(false);
 
-        mChart.getDescription().setEnabled(false);
+        chart.setDrawBarShadow(false);
+
+        chart.setDrawValueAboveBar(true);
+
+        chart.getDescription().setEnabled(false);
 
         // if more than 60 entries are displayed in the chart, no values will be
         // drawn
-        mChart.setMaxVisibleValueCount(60);
+        chart.setMaxVisibleValueCount(60);
 
         // scaling can now only be done on x- and y-axis separately
-        mChart.setPinchZoom(false);
+        chart.setPinchZoom(false);
 
         // draw shadows for each bar that show the maximum value
-        // mChart.setDrawBarShadow(true);
+        // chart.setDrawBarShadow(true);
 
-        mChart.setDrawGridBackground(false);
+        chart.setDrawGridBackground(false);
 
-        XAxis xl = mChart.getXAxis();
+        XAxis xl = chart.getXAxis();
         xl.setPosition(XAxisPosition.BOTTOM);
-        xl.setTypeface(mTfLight);
+        xl.setTypeface(tfLight);
         xl.setDrawAxisLine(true);
         xl.setDrawGridLines(false);
         xl.setGranularity(10f);
 
-        YAxis yl = mChart.getAxisLeft();
-        yl.setTypeface(mTfLight);
+        YAxis yl = chart.getAxisLeft();
+        yl.setTypeface(tfLight);
         yl.setDrawAxisLine(true);
         yl.setDrawGridLines(true);
         yl.setAxisMinimum(0f); // this replaces setStartAtZero(true)
 //        yl.setInverted(true);
 
-        YAxis yr = mChart.getAxisRight();
-        yr.setTypeface(mTfLight);
+        YAxis yr = chart.getAxisRight();
+        yr.setTypeface(tfLight);
         yr.setDrawAxisLine(true);
         yr.setDrawGridLines(false);
         yr.setAxisMinimum(0f); // this replaces setStartAtZero(true)
 //        yr.setInverted(true);
 
-        setData(12, 50);
-        mChart.setFitBars(true);
-        mChart.animateY(2500);
+        chart.setFitBars(true);
+        chart.animateY(2500);
 
         // setting data
-        mSeekBarY.setProgress(50);
-        mSeekBarX.setProgress(12);
+        seekBarY.setProgress(50);
+        seekBarX.setProgress(12);
 
-        mSeekBarY.setOnSeekBarChangeListener(this);
-        mSeekBarX.setOnSeekBarChangeListener(this);
-
-        Legend l = mChart.getLegend();
+        Legend l = chart.getLegend();
         l.setVerticalAlignment(Legend.LegendVerticalAlignment.BOTTOM);
         l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.LEFT);
         l.setOrientation(Legend.LegendOrientation.HORIZONTAL);
@@ -115,6 +118,42 @@ public class HorizontalBarChartActivity extends DemoBase implements OnSeekBarCha
         l.setXEntrySpace(4f);
     }
 
+    private void setData(int count, float range) {
+
+        float barWidth = 9f;
+        float spaceForBar = 10f;
+        ArrayList<BarEntry> values = new ArrayList<>();
+
+        for (int i = 0; i < count; i++) {
+            float val = (float) (Math.random() * range);
+            values.add(new BarEntry(i * spaceForBar, val,
+                    getResources().getDrawable(R.drawable.star)));
+        }
+
+        BarDataSet set1;
+
+        if (chart.getData() != null &&
+                chart.getData().getDataSetCount() > 0) {
+            set1 = (BarDataSet) chart.getData().getDataSetByIndex(0);
+            set1.setValues(values);
+            chart.getData().notifyDataChanged();
+            chart.notifyDataSetChanged();
+        } else {
+            set1 = new BarDataSet(values, "DataSet 1");
+
+            set1.setDrawIcons(false);
+
+            ArrayList<IBarDataSet> dataSets = new ArrayList<>();
+            dataSets.add(set1);
+
+            BarData data = new BarData(dataSets);
+            data.setValueTextSize(10f);
+            data.setValueTypeface(tfLight);
+            data.setBarWidth(barWidth);
+            chart.setData(data);
+        }
+    }
+
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
         getMenuInflater().inflate(R.menu.bar, menu);
@@ -125,80 +164,80 @@ public class HorizontalBarChartActivity extends DemoBase implements OnSeekBarCha
     public boolean onOptionsItemSelected(MenuItem item) {
 
         switch (item.getItemId()) {
+            case R.id.viewGithub: {
+                Intent i = new Intent(Intent.ACTION_VIEW);
+                i.setData(Uri.parse("https://github.com/PhilJay/MPAndroidChart/blob/master/MPChartExample/src/com/xxmassdeveloper/mpchartexample/HorizontalBarChartActivity.java"));
+                startActivity(i);
+                break;
+            }
             case R.id.actionToggleValues: {
-                List<IBarDataSet> sets = mChart.getData()
+                List<IBarDataSet> sets = chart.getData()
                         .getDataSets();
 
                 for (IBarDataSet iSet : sets) {
-
-                    IBarDataSet set = (BarDataSet) iSet;
-                    set.setDrawValues(!set.isDrawValuesEnabled());
+                    iSet.setDrawValues(!iSet.isDrawValuesEnabled());
                 }
 
-                mChart.invalidate();
+                chart.invalidate();
                 break;
             }
             case R.id.actionToggleIcons: {
-                List<IBarDataSet> sets = mChart.getData()
+                List<IBarDataSet> sets = chart.getData()
                         .getDataSets();
 
                 for (IBarDataSet iSet : sets) {
-
-                    IBarDataSet set = (BarDataSet) iSet;
-                    set.setDrawIcons(!set.isDrawIconsEnabled());
+                    iSet.setDrawIcons(!iSet.isDrawIconsEnabled());
                 }
 
-                mChart.invalidate();
+                chart.invalidate();
                 break;
             }
             case R.id.actionToggleHighlight: {
-                if(mChart.getData() != null) {
-                    mChart.getData().setHighlightEnabled(!mChart.getData().isHighlightEnabled());
-                    mChart.invalidate();
+                if(chart.getData() != null) {
+                    chart.getData().setHighlightEnabled(!chart.getData().isHighlightEnabled());
+                    chart.invalidate();
                 }
                 break;
             }
             case R.id.actionTogglePinch: {
-                if (mChart.isPinchZoomEnabled())
-                    mChart.setPinchZoom(false);
+                if (chart.isPinchZoomEnabled())
+                    chart.setPinchZoom(false);
                 else
-                    mChart.setPinchZoom(true);
+                    chart.setPinchZoom(true);
 
-                mChart.invalidate();
+                chart.invalidate();
                 break;
             }
             case R.id.actionToggleAutoScaleMinMax: {
-                mChart.setAutoScaleMinMaxEnabled(!mChart.isAutoScaleMinMaxEnabled());
-                mChart.notifyDataSetChanged();
+                chart.setAutoScaleMinMaxEnabled(!chart.isAutoScaleMinMaxEnabled());
+                chart.notifyDataSetChanged();
                 break;
             }
             case R.id.actionToggleBarBorders: {
-                for (IBarDataSet set : mChart.getData().getDataSets())
+                for (IBarDataSet set : chart.getData().getDataSets())
                     ((BarDataSet)set).setBarBorderWidth(set.getBarBorderWidth() == 1.f ? 0.f : 1.f);
 
-                mChart.invalidate();
+                chart.invalidate();
                 break;
             }
             case R.id.animateX: {
-                mChart.animateX(3000);
+                chart.animateX(2000);
                 break;
             }
             case R.id.animateY: {
-                mChart.animateY(3000);
+                chart.animateY(2000);
                 break;
             }
             case R.id.animateXY: {
-
-                mChart.animateXY(3000, 3000);
+                chart.animateXY(2000, 2000);
                 break;
             }
             case R.id.actionSave: {
-                if (mChart.saveToGallery("title" + System.currentTimeMillis(), 50)) {
-                    Toast.makeText(getApplicationContext(), "Saving SUCCESSFUL!",
-                            Toast.LENGTH_SHORT).show();
-                } else
-                    Toast.makeText(getApplicationContext(), "Saving FAILED!", Toast.LENGTH_SHORT)
-                            .show();
+                if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
+                    saveToGallery();
+                } else {
+                    requestStoragePermission(chart);
+                }
                 break;
             }
         }
@@ -208,64 +247,27 @@ public class HorizontalBarChartActivity extends DemoBase implements OnSeekBarCha
     @Override
     public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
 
-        tvX.setText("" + (mSeekBarX.getProgress() + 1));
-        tvY.setText("" + (mSeekBarY.getProgress()));
+        tvX.setText(String.valueOf(seekBarX.getProgress()));
+        tvY.setText(String.valueOf(seekBarY.getProgress()));
 
-        setData(mSeekBarX.getProgress() + 1, mSeekBarY.getProgress());
-        mChart.setFitBars(true);
-        mChart.invalidate();
+        setData(seekBarX.getProgress(), seekBarY.getProgress());
+        chart.setFitBars(true);
+        chart.invalidate();
     }
 
     @Override
-    public void onStartTrackingTouch(SeekBar seekBar) {
-        // TODO Auto-generated method stub
-
+    protected void saveToGallery() {
+        saveToGallery(chart, "HorizontalBarChartActivity");
     }
 
     @Override
-    public void onStopTrackingTouch(SeekBar seekBar) {
-        // TODO Auto-generated method stub
+    public void onStartTrackingTouch(SeekBar seekBar) {}
 
-    }
+    @Override
+    public void onStopTrackingTouch(SeekBar seekBar) {}
 
-    private void setData(int count, float range) {
+    private final RectF mOnValueSelectedRectF = new RectF();
 
-        float barWidth = 9f;
-        float spaceForBar = 10f;
-        ArrayList<BarEntry> yVals1 = new ArrayList<BarEntry>();
-
-        for (int i = 0; i < count; i++) {
-            float val = (float) (Math.random() * range);
-            yVals1.add(new BarEntry(i * spaceForBar, val,
-                    getResources().getDrawable(R.drawable.star)));
-        }
-
-        BarDataSet set1;
-
-        if (mChart.getData() != null &&
-                mChart.getData().getDataSetCount() > 0) {
-            set1 = (BarDataSet)mChart.getData().getDataSetByIndex(0);
-            set1.setValues(yVals1);
-            mChart.getData().notifyDataChanged();
-            mChart.notifyDataSetChanged();
-        } else {
-            set1 = new BarDataSet(yVals1, "DataSet 1");
-
-            set1.setDrawIcons(false);
-
-            ArrayList<IBarDataSet> dataSets = new ArrayList<IBarDataSet>();
-            dataSets.add(set1);
-
-            BarData data = new BarData(dataSets);
-            data.setValueTextSize(10f);
-            data.setValueTypeface(mTfLight);
-            data.setBarWidth(barWidth);
-            mChart.setData(data);
-        }
-    }
-
-    protected RectF mOnValueSelectedRectF = new RectF();
-    @SuppressLint("NewApi")
     @Override
     public void onValueSelected(Entry e, Highlight h) {
 
@@ -273,9 +275,9 @@ public class HorizontalBarChartActivity extends DemoBase implements OnSeekBarCha
             return;
 
         RectF bounds = mOnValueSelectedRectF;
-        mChart.getBarBounds((BarEntry) e, bounds);
+        chart.getBarBounds((BarEntry) e, bounds);
 
-        MPPointF position = mChart.getPosition(e, mChart.getData().getDataSetByIndex(h.getDataSetIndex())
+        MPPointF position = chart.getPosition(e, chart.getData().getDataSetByIndex(h.getDataSetIndex())
                 .getAxisDependency());
 
         Log.i("bounds", bounds.toString());
@@ -285,6 +287,5 @@ public class HorizontalBarChartActivity extends DemoBase implements OnSeekBarCha
     }
 
     @Override
-    public void onNothingSelected() {
-    };
+    public void onNothingSelected() {}
 }