Media Player controls in Notification

Question

I have written complete Music Player to stream music from the web, but I don't know how to put media player controls in Notification and when the screen is Lock.

I am following this tutorial to show controls in the Notification bar, but still not getting How to use same functionality in my program, I have imported required classes like: NotificationService.java and Constants.java.

This is what I am getting in Notification Bar:

[]

I am confused. Why I am not getting title of the song I am playing, why pause, prev and next buttons are not working etc ...

NotificationService.java:

public class NotificationService extends Service {      Notification status;     private final String LOG_TAG = "NotificationService";      @Override     public void onDestroy() {         super.onDestroy();     }      @Override     public IBinder onBind(Intent intent) {         return null;     }       @Override     public int onStartCommand(Intent intent, int flags, int startId) {          if (intent.getAction().equals(Constants.ACTION.STARTFOREGROUND_ACTION)) {             showNotification();             Toast.makeText(this, "Service Started", Toast.LENGTH_SHORT).show();           } else if (intent.getAction().equals(Constants.ACTION.PREV_ACTION)) {             Toast.makeText(this, "Clicked Previous", Toast.LENGTH_SHORT).show();             Log.i(LOG_TAG, "Clicked Previous");         } else if (intent.getAction().equals(Constants.ACTION.PLAY_ACTION)) {             Toast.makeText(this, "Clicked Play", Toast.LENGTH_SHORT).show();             Log.i(LOG_TAG, "Clicked Play");         } else if (intent.getAction().equals(Constants.ACTION.NEXT_ACTION)) {             Toast.makeText(this, "Clicked Next", Toast.LENGTH_SHORT).show();             Log.i(LOG_TAG, "Clicked Next");         } else if (intent.getAction().equals(Constants.ACTION.STOPFOREGROUND_ACTION)) {             Log.i(LOG_TAG, "Received Stop Foreground Intent");             Toast.makeText(this, "Service Stoped", Toast.LENGTH_SHORT).show();             stopForeground(true);             stopSelf();         }         return START_STICKY;     }      private void showNotification() {         // Using RemoteViews to bind custom layouts into Notification         RemoteViews views = new RemoteViews(getPackageName(), R.layout.status_bar);         RemoteViews bigViews = new RemoteViews(getPackageName(), R.layout.status_bar_expanded);          // showing default album image         views.setViewVisibility(R.id.status_bar_icon, View.VISIBLE);         views.setViewVisibility(R.id.status_bar_album_art, View.GONE);         bigViews.setImageViewBitmap(R.id.status_bar_album_art,         Constants.getDefaultAlbumArt(this));         Intent notificationIntent = new Intent(this, MusicPlayerActivity.class);         notificationIntent.setAction(Constants.ACTION.MAIN_ACTION);         notificationIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK         | Intent.FLAG_ACTIVITY_CLEAR_TASK);         PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);         Intent previousIntent = new Intent(this, NotificationService.class);         previousIntent.setAction(Constants.ACTION.PREV_ACTION);         PendingIntent ppreviousIntent = PendingIntent.getService(this, 0, previousIntent, 0);         Intent playIntent = new Intent(this, NotificationService.class);         playIntent.setAction(Constants.ACTION.PLAY_ACTION);         PendingIntent pplayIntent = PendingIntent.getService(this, 0, playIntent, 0);          Intent nextIntent = new Intent(this, NotificationService.class);         nextIntent.setAction(Constants.ACTION.NEXT_ACTION);         PendingIntent pnextIntent = PendingIntent.getService(this, 0, nextIntent, 0);          Intent closeIntent = new Intent(this, NotificationService.class);         closeIntent.setAction(Constants.ACTION.STOPFOREGROUND_ACTION);         PendingIntent pcloseIntent = PendingIntent.getService(this, 0, closeIntent, 0);         views.setOnClickPendingIntent(R.id.status_bar_play, pplayIntent);         bigViews.setOnClickPendingIntent(R.id.status_bar_play, pplayIntent);         views.setOnClickPendingIntent(R.id.status_bar_next, pnextIntent);         bigViews.setOnClickPendingIntent(R.id.status_bar_next, pnextIntent);         views.setOnClickPendingIntent(R.id.status_bar_prev, ppreviousIntent);         bigViews.setOnClickPendingIntent(R.id.status_bar_prev, ppreviousIntent);         views.setOnClickPendingIntent(R.id.status_bar_collapse, pcloseIntent);         bigViews.setOnClickPendingIntent(R.id.status_bar_collapse, pcloseIntent);         views.setImageViewResource(R.id.status_bar_play,         R.drawable.apollo_holo_dark_pause);         bigViews.setImageViewResource(R.id.status_bar_play,         R.drawable.apollo_holo_dark_pause);         views.setTextViewText(R.id.status_bar_track_name, "Song Title");         bigViews.setTextViewText(R.id.status_bar_track_name, "Song Title");         views.setTextViewText(R.id.status_bar_artist_name, "Artist Name");         bigViews.setTextViewText(R.id.status_bar_artist_name, "Artist Name");         bigViews.setTextViewText(R.id.status_bar_album_name, "Album Name");         status = new Notification.Builder(this).build();         status.contentView = views;         status.bigContentView = bigViews;         status.flags = Notification.FLAG_ONGOING_EVENT;         status.icon = R.drawable.ic_launcher;         status.contentIntent = pendingIntent;         startForeground(Constants.NOTIFICATION_ID.FOREGROUND_SERVICE, status);         }     } 

Constants.java:

public class Constants {     public interface ACTION {         public static String MAIN_ACTION = "com.marothiatechs.customnotification.action.main";         public static String INIT_ACTION = "com.marothiatechs.customnotification.action.init";         public static String PREV_ACTION = "com.marothiatechs.customnotification.action.prev";         public static String PLAY_ACTION = "com.marothiatechs.customnotification.action.play";         public static String NEXT_ACTION = "com.marothiatechs.customnotification.action.next";         public static String STARTFOREGROUND_ACTION = "com.marothiatechs.customnotification.action.startforeground";         public static String STOPFOREGROUND_ACTION = "com.marothiatechs.customnotification.action.stopforeground";      }      public interface NOTIFICATION_ID {         public static int FOREGROUND_SERVICE = 101;     }      public static Bitmap getDefaultAlbumArt(Context context) {         Bitmap bm = null;         BitmapFactory.Options options = new BitmapFactory.Options();         try {             bm = BitmapFactory.decodeResource(context.getResources(),             R.drawable.default_album_art, options);         } catch (Error ee) {         } catch (Exception e) {         }     return bm;     } } 

MusicPlayerActivity.java:

public class MusicPlayerActivity extends Activity {  // ....      @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_music_player);         mediaPlayer = new MediaPlayer();         audiosArrayList = new ArrayList<MusicPlayer>();         listview = (ListView) findViewById(R.id.list_slidermenu);      // ...          btnPlay.setOnClickListener(new OnClickListener() {              @Override             public void onClick(View view) {                 try {                     play();                                     } catch (Exception exception){                     Log.v("exception:play", exception.toString());                 }              }         });          btnPause.setOnClickListener(new OnClickListener() {              @Override             public void onClick(View view) {                 try {                     pause();                 } catch (Exception exception){                     Log.v("exception:pause", exception.toString());                 }              }         });          btnNext.setOnClickListener(new OnClickListener() {              @Override             public void onClick(View view) {                 try {                     next();                 } catch (Exception exception){                     Log.v("exception:next", exception.toString());                 }              }         });          btnPrev.setOnClickListener(new OnClickListener() {              @Override             public void onClick(View view) {                  try {                     prev();                 } catch (Exception exception){                     Log.v("exception:pause", exception.toString());                 }             }         });         new JSONAsyncTask().execute("http://myurl/json/musics.json");         listview.setOnItemClickListener(new OnItemClickListener() {         @Override         public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {              if (mediaPlayer != null && mediaPlayer.isPlaying())                 try {                     mediaPlayer.stop();                 } catch (Exception e) {                  }             play();         }     });      ......      }      // ...      public void startService(View v) {         Intent serviceIntent = new Intent(MusicPlayerActivity.this, NotificationService.class);         serviceIntent.setAction(Constants.ACTION.STARTFOREGROUND_ACTION);         startService(serviceIntent);     } 

Answer 1

try something like this (i used integers for actions):

intent.putExtra("action", ACTION_EXIT); pendingIntent = PendingIntent.getService(this, intent.getIntExtra("action", 0), intent, PendingIntent.FLAG_UPDATE_CURRENT); 

in public static PendingIntent getService (Context context, int requestCode, Intent intent, int flags) the requestCode must be unique.