title: Firebase Android NotificationCompat.PRIORITY_HIGH not working while app is in background
body: <p>I have implemented firebase successfully. The only thing I am not able to achieve is NotificationCompat.PRIORITY_HIGH. Its working when the app is in foreground. In my PHP code I have added priority and its value to high. Though it seems to be useless for android. In my ios app priority high is working. I am not able to figure out how this can be done. Just for your Info : I am aware of payload data and notifications. :) Thank you.</p>
  
  <pre><code>public class MyFirebaseMessagingService extends FirebaseMessagingService {
  
  private static final String TAG = "MyFirebaseMsgService";
  Bitmap bitmap;
  
  @Override
  public void onMessageReceived(RemoteMessage remoteMessage) {
      //Displaying data in log
      //It is optional
      Log.d(TAG, "From: " + remoteMessage.getFrom());
      Log.d(TAG, "Notification Message Title: " + remoteMessage.getNotification().getTitle());
      Log.d(TAG, "Notification Message Body: " + remoteMessage.getNotification().getBody());
      String imageUrl = remoteMessage.getData().get("image");
      bitmap = getBitmapfromUrl(imageUrl);
      //Calling method to generate notification
      sendNotification(remoteMessage.getNotification().getBody(), remoteMessage.getNotification().getTitle());
  }
  
  
  private void sendNotification(String messageBody, String title) {
      Intent intent = new Intent(this, HomeActivity.class);
      intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
      PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent,
              PendingIntent.FLAG_ONE_SHOT);
      Log.e("inside notification", "method");
      Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
      NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
              .setSmallIcon(R.drawable.ic_stat_bicycle)
              .setColor(getResources().getColor(R.color.ColorPrimary))
              .setContentTitle(title)
              .setContentText(messageBody)
              .setPriority(NotificationCompat.PRIORITY_HIGH)
              .setAutoCancel(true)
              .setSound(defaultSoundUri)
              .setContentIntent(pendingIntent);
      if (Build.VERSION.SDK_INT &gt;= 19) {
          notificationBuilder.setStyle(new NotificationCompat.BigTextStyle().bigText(messageBody));
           notificationBuilder.setStyle(new NotificationCompat.BigPictureStyle()
                      .bigPicture(img))
      }
      NotificationManager notificationManager =
              (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
      Random rn = new Random();
      int result = rn.nextInt(100 + 1);
      notificationManager.notify(result, notificationBuilder.build());
  }
  </code></pre>