Using preferences' apply() instead of commit() on Gingerbread.

MyTracks/src/com/google/android/apps/mytracks/util/ApiPlatformAdapter.java

@@ -18,6 +18,7 @@ package com.google.android.apps.mytracks.util;
 import android.app.Notification;
 import android.app.NotificationManager;
 import android.app.Service;
+import android.content.SharedPreferences;
 import android.os.HandlerThread;
 
 /**
@@ -58,6 +59,12 @@ public interface ApiPlatformAdapter {
    */
   boolean stopHandlerThread(HandlerThread handlerThread);
 
+  /**
+   * Applies all changes done to the given preferences editor.
+   * Changes may or may not be applied immediately.
+   */
+  void applyPreferenceChanges(SharedPreferences.Editor editor);
+  
   /**
    * Enables strict mode where supported, only if this is a development build.
    */

MyTracks/src/com/google/android/apps/mytracks/util/CupcakePlatformAdapter.java

@@ -18,6 +18,7 @@ package com.google.android.apps.mytracks.util;
 import android.app.Notification;
 import android.app.NotificationManager;
 import android.app.Service;
+import android.content.SharedPreferences.Editor;
 import android.os.HandlerThread;
 
 /**
@@ -51,6 +52,11 @@ public class CupcakePlatformAdapter implements ApiPlatformAdapter {
     return false;
   }
 
+  @Override
+  public void applyPreferenceChanges(Editor editor) {
+    editor.commit();
+  }
+
   @Override
   public void enableStrictMode() {
     // Not supported

MyTracks/src/com/google/android/apps/mytracks/util/EclairPlatformAdapter.java

@@ -18,6 +18,7 @@ package com.google.android.apps.mytracks.util;
 import android.app.Notification;
 import android.app.NotificationManager;
 import android.app.Service;
+import android.content.SharedPreferences.Editor;
 import android.os.HandlerThread;
 
 /**
@@ -46,6 +47,11 @@ public class EclairPlatformAdapter implements ApiPlatformAdapter {
     return handlerThread.quit();
   }
 
+  @Override
+  public void applyPreferenceChanges(Editor editor) {
+    editor.commit();
+  }
+
   @Override
   public void enableStrictMode() {
     // Not supported

MyTracks/src/com/google/android/apps/mytracks/util/GingerbreadPlatformAdapter.java

@@ -2,6 +2,7 @@ package com.google.android.apps.mytracks.util;
 
 import com.google.android.apps.mytracks.MyTracksConstants;
 
+import android.content.SharedPreferences.Editor;
 import android.os.StrictMode;
 import android.util.Log;
 
@@ -12,6 +13,12 @@ import android.util.Log;
  * @author Rodrigo Damazio
  */
 public class GingerbreadPlatformAdapter extends EclairPlatformAdapter {
+  @Override
+  public void applyPreferenceChanges(Editor editor) {
+    // Apply asynchronously
+    editor.apply();
+  }
+
   @Override
   public void enableStrictMode() {
     Log.d(MyTracksConstants.TAG, "Enabling strict mode");