[android] Added FileLogger class.

android/src/com/mapswithme/maps/location/LocationService.java

@@ -78,6 +78,8 @@ public class LocationService implements LocationListener, SensorEventListener, W
   {
     mApplication = application;
 
+    //mLogger = new FileLogger("LocationService", mApplication.getDataStoragePath());
+
     mLocationManager = (LocationManager) mApplication.getSystemService(Context.LOCATION_SERVICE);
     mSensorManager = (SensorManager) mApplication.getSystemService(Context.SENSOR_SERVICE);
 

android/src/com/mapswithme/maps/location/WifiLocation.java

@@ -46,6 +46,7 @@ public class WifiLocation extends BroadcastReceiver
 
   public WifiLocation()
   {
+    //mLogger = new FileLogger("WiFiLocation", MWMApplication.get().getDataStoragePath());
   }
 
   /// @return true if was started successfully.

android/src/com/mapswithme/util/log/FileLogger.java

@@ -0,0 +1,66 @@
+package com.mapswithme.util.log;
+
+import java.io.FileWriter;
+import java.io.IOException;
+
+import android.util.Log;
+
+public class FileLogger extends Logger
+{
+  static private FileWriter m_file = null;
+  static private String m_separator;
+
+  private void write(String str)
+  {
+    try
+    {
+      m_file.write(tag + ": " + str + m_separator);
+      m_file.flush();
+    }
+    catch (IOException ex)
+    {
+      Log.e(tag, ex.toString());
+    }
+  }
+
+  public FileLogger(String tag, String path)
+  {
+    this.tag = tag;
+    if (m_file == null)
+    {
+      try
+      {
+        m_file = new FileWriter(path + "android-logging.txt");
+        m_separator = System.getProperty("line.separator");
+      }
+      catch (IOException ex)
+      {
+        Log.e(tag, ex.toString());
+      }
+    }
+  }
+
+  @Override
+  public void d(String message)
+  {
+    write("Debug: " + message);
+  }
+
+  @Override
+  public void e(String message)
+  {
+    write("Error: " + message);
+  }
+
+  @Override
+  public void d(String message, Object... args)
+  {
+    write("Debug: " + message + join(args));
+  }
+
+  @Override
+  public void e(String message, Object... args)
+  {
+    write("Error: " + message + join(args));
+  }
+}

android/src/com/mapswithme/util/log/Logger.java

@@ -1,5 +1,7 @@
 package com.mapswithme.util.log;
 
+import android.text.TextUtils;
+
 public abstract class Logger
 {
   protected String tag = "MAPSWITHME";
@@ -11,6 +13,11 @@ public abstract class Logger
     this.tag = tag;
   }
 
+  static protected String join(Object ... args)
+  {
+    return (args != null ? TextUtils.join(", ", args) : "");
+  }
+
   public abstract void d(String message);
   public abstract void e(String message);
 

android/src/com/mapswithme/util/log/SimpleLogger.java

@@ -1,6 +1,5 @@
 package com.mapswithme.util.log;
 
-import android.text.TextUtils;
 import android.util.Log;
 
 public class SimpleLogger extends Logger
@@ -32,11 +31,6 @@ public class SimpleLogger extends Logger
     Log.e(tag, message + join(args));
   }
 
-  private static String join(Object ... args)
-  {
-    return (args != null ? TextUtils.join(", ", args) : "");
-  }
-
   private SimpleLogger() {}
   private SimpleLogger(String tag) { super(tag); }
 }