title: How to press ON a foreground service Notification?
body: <p>I have a foreground service notification and i want when the user closes the app and presses the notification to open the application again.I implemented an 
  onclicklistener with onClick() method but it did nothing.If that is not possible i want the "Play" button to be shown in the notification because it is only being shown when i expand the notification.</p>
  
  <p><strong>Here is the service class:</strong></p>
  
  <pre><code>public class MyForeGroundService extends Service {
  
  public MyForeGroundService() {
  }
  
  @Override
  public IBinder onBind(Intent intent) {
      // TODO: Return the communication channel to the service.
      throw new UnsupportedOperationException("Not yet implemented");
  }
  
  @Override
  public void onCreate() {
      super.onCreate();
      Log.d(TAG_FOREGROUND_SERVICE, "My foreground service onCreate().");
  }
  
  @Override
  public int onStartCommand(Intent intent, int flags, int startId) {
      if (intent != null) {
          String action = intent.getAction();
  
          switch (action) {
              case ACTION_START_FOREGROUND_SERVICE:
                  startForegroundService();
                  Toast.makeText(getApplicationContext(), "Foreground service is started.", Toast.LENGTH_LONG).show();
                  break;
              case ACTION_STOP_FOREGROUND_SERVICE:
                  stopForegroundService();
                  Toast.makeText(getApplicationContext(), "Foreground service is stopped.", Toast.LENGTH_LONG).show();
                  break;
              case ACTION_PLAY:
                  Toast.makeText(getApplicationContext(), "You click Play button.", Toast.LENGTH_LONG).show();
                  break;
              case ACTION_PAUSE:
                  Toast.makeText(getApplicationContext(), "You click Pause button.", Toast.LENGTH_LONG).show();
                  break;
          }
      }
      return super.onStartCommand(intent, flags, startId);
  }
  
  /* Used to build and start foreground service. */
  private void startForegroundService() {
      Log.d(TAG_FOREGROUND_SERVICE, "Start foreground service.");
  
      // Create notification default intent.
      Intent intent = new Intent();
      PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);
  
      // Create notification builder.
      NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
  
      // Make notification show big text.
      NotificationCompat.BigTextStyle bigTextStyle = new NotificationCompat.BigTextStyle();
      bigTextStyle.setBigContentTitle("Music player implemented by foreground service.");
      bigTextStyle.bigText("Android foreground service is a android service which can run in foreground always, it can be controlled by user via notification.");
      // Set big text style.
      builder.setStyle(bigTextStyle);
  
      builder.setWhen(System.currentTimeMillis());
      builder.setSmallIcon(R.mipmap.ic_launcher);
      Bitmap largeIconBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.strava);
      builder.setLargeIcon(largeIconBitmap);
      // Make the notification max priority.
      builder.setPriority(Notification.PRIORITY_MAX);
      // Make head-up notification.
      builder.setFullScreenIntent(pendingIntent, true);
  
      // Add Play button intent in notification.
      Intent playIntent = new Intent(this, MyForeGroundService.class);
      playIntent.setAction(ACTION_PLAY);
      PendingIntent pendingPlayIntent = PendingIntent.getService(this, 0, playIntent, 0);
      NotificationCompat.Action playAction = new NotificationCompat.Action(android.R.drawable.ic_media_play, "Play", pendingPlayIntent);
      builder.addAction(playAction);
  
      // Build the notification.
      Notification notification = builder.build();
  
      // Start foreground service.
      startForeground(1, notification);
  }
  
  private void stopForegroundService() {
      Log.d(TAG_FOREGROUND_SERVICE, "Stop foreground service.");
  
      // Stop foreground service and remove the notification.
      stopForeground(true);
  
      // Stop the foreground service.
      stopSelf();
  }
  
  }
  </code></pre>