Provide example for #1865

MPChartExample/AndroidManifest.xml

@@ -64,6 +64,7 @@
         <activity android:name="StackedBarActivityNegative"></activity>
         <activity android:name=".realm.RealmWikiExample"></activity>
         <activity android:name=".BarChartPositiveNegative"></activity>
+        <activity android:name=".FilledLineActivity"></activity>
     </application>
 
 </manifest>

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

@@ -0,0 +1,150 @@
+
+package com.xxmassdeveloper.mpchartexample;
+
+import android.graphics.Color;
+import android.os.Bundle;
+import android.view.WindowManager;
+
+import com.github.mikephil.charting.charts.LineChart;
+import com.github.mikephil.charting.components.Legend;
+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.formatter.FillFormatter;
+import com.github.mikephil.charting.interfaces.dataprovider.LineDataProvider;
+import com.github.mikephil.charting.interfaces.datasets.ILineDataSet;
+import com.xxmassdeveloper.mpchartexample.notimportant.DemoBase;
+
+import java.util.ArrayList;
+
+public class FilledLineActivity extends DemoBase {
+
+    private LineChart mChart;
+    private int mFillColor = Color.argb(150, 51, 181, 229);
+
+    @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);
+        mChart.setBackgroundColor(Color.WHITE);
+        mChart.setGridBackgroundColor(mFillColor);
+        mChart.setDrawGridBackground(true);
+
+        mChart.setDrawBorders(true);
+
+        // no description text
+        mChart.setDescription("");
+
+        // if disabled, scaling can be done on x- and y-axis separately
+        mChart.setPinchZoom(false);
+
+        Legend l = mChart.getLegend();
+        l.setEnabled(false);
+
+        XAxis xAxis = mChart.getXAxis();
+        xAxis.setEnabled(false);
+
+        YAxis leftAxis = mChart.getAxisLeft();
+        leftAxis.setAxisMaxValue(900f);
+        leftAxis.setAxisMinValue(-250f);
+        leftAxis.setDrawAxisLine(false);
+        leftAxis.setDrawZeroLine(false);
+        leftAxis.setDrawGridLines(false);
+
+        mChart.getAxisRight().setEnabled(false);
+
+        // add data
+        setData(100, 60);
+
+        mChart.invalidate();
+    }
+
+    private void setData(int count, float range) {
+
+        ArrayList<Entry> yVals1 = new ArrayList<Entry>();
+
+        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));
+        }
+
+        ArrayList<Entry> yVals2 = new ArrayList<Entry>();
+
+        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));
+        }
+
+        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();
+        } else {
+            // create a dataset and give it a type
+            set1 = new LineDataSet(yVals1, "DataSet 1");
+
+            set1.setAxisDependency(YAxis.AxisDependency.LEFT);
+            set1.setColor(Color.rgb(255, 241, 46));
+            set1.setDrawCircles(false);
+            set1.setLineWidth(2f);
+            set1.setCircleRadius(3f);
+            set1.setFillAlpha(255);
+            set1.setDrawFilled(true);
+            set1.setFillColor(Color.WHITE);
+            set1.setHighLightColor(Color.rgb(244, 117, 117));
+            set1.setDrawCircleHole(false);
+            set1.setFillFormatter(new FillFormatter() {
+                @Override
+                public float getFillLinePosition(ILineDataSet dataSet, LineDataProvider dataProvider) {
+                    return mChart.getAxisLeft().getAxisMinimum();
+                }
+            });
+
+            // create a dataset and give it a type
+            set2 = new LineDataSet(yVals2, "DataSet 2");
+            set2.setAxisDependency(YAxis.AxisDependency.LEFT);
+            set2.setColor(Color.rgb(255, 241, 46));
+            set2.setDrawCircles(false);
+            set2.setLineWidth(2f);
+            set2.setCircleRadius(3f);
+            set2.setFillAlpha(255);
+            set2.setDrawFilled(true);
+            set2.setFillColor(Color.WHITE);
+            set2.setDrawCircleHole(false);
+            set2.setHighLightColor(Color.rgb(244, 117, 117));
+            set2.setFillFormatter(new FillFormatter() {
+                @Override
+                public float getFillLinePosition(ILineDataSet dataSet, LineDataProvider dataProvider) {
+                    return mChart.getAxisLeft().getAxisMaximum();
+                }
+            });
+
+            ArrayList<ILineDataSet> dataSets = new ArrayList<ILineDataSet>();
+            dataSets.add(set1); // add the datasets
+            dataSets.add(set2);
+
+            // create a data object with the datasets
+            LineData data = new LineData(dataSets);
+            data.setDrawValues(false);
+
+            // set data
+            mChart.setData(data);
+        }
+    }
+}

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

@@ -24,6 +24,7 @@ import com.xxmassdeveloper.mpchartexample.CandleStickChartActivity;
 import com.xxmassdeveloper.mpchartexample.CombinedChartActivity;
 import com.xxmassdeveloper.mpchartexample.CubicLineChartActivity;
 import com.xxmassdeveloper.mpchartexample.DynamicalAddingActivity;
+import com.xxmassdeveloper.mpchartexample.FilledLineActivity;
 import com.xxmassdeveloper.mpchartexample.HorizontalBarChartActivity;
 import com.xxmassdeveloper.mpchartexample.InvertedLineChartActivity;
 import com.xxmassdeveloper.mpchartexample.LineChartActivity1;
@@ -139,6 +140,9 @@ public class MainActivity extends Activity implements OnItemClickListener {
                 "Simple demonstration of a time-chart. This chart draws one line entry per hour originating from the current time in milliseconds.");
         time.isNew = true;
         objects.add(time);
+        objects.add(new ContentItem(
+                "Filled LineChart",
+                "This demonstrates how to fill an area between two LineDataSets."));
 
         MyAdapter adapter = new MyAdapter(this, objects);
 
@@ -274,6 +278,10 @@ public class MainActivity extends Activity implements OnItemClickListener {
                 i = new Intent(this, LineChartTime.class);
                 startActivity(i);
                 break;
+            case 30:
+                i = new Intent(this, FilledLineActivity.class);
+                startActivity(i);
+                break;
 
         }