Firebase notification doesn't work properly if application is in background

Question

I have an FirebaseMessagingService class for Firebase:

public class FcmMessagingService extends FirebaseMessagingService {

@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
    String message = remoteMessage.getNotification().getBody();

    Map<String, String> params = remoteMessage.getData();

    Bitmap remote_picture = null;
    remote_picture = BitmapFactory.decodeResource(getApplicationContext().getResources(), R.drawable.logo);

    intent = new Intent(this, HomeDrawer.class);
    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    PendingIntent pendingIntent = PendingIntent.getActivity(this,0,intent, PendingIntent.FLAG_ONE_SHOT);
    NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this);
    notificationBuilder.setContentTitle("Notification Title");
    notificationBuilder.setContentText(message);
    notificationBuilder.setSmallIcon(R.drawable.ic_notif);
    notificationBuilder.setLargeIcon(remote_picture);
    notificationBuilder.setAutoCancel(true);
    notificationBuilder.setContentIntent(pendingIntent);
    NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    Notification noti = new Notification();
    noti = notificationBuilder.build();
    //notificationBuilder.setVibrate(new long[] { 1000, 1000});
    //notificationBuilder.setSound(Settings.System.DEFAULT_NOTIFICATION_URI);
    noti.flags |= Notification.FLAG_ONLY_ALERT_ONCE;
    notificationManager.notify(0,noti);

    super.onMessageReceived(remoteMessage);
}

If the application is in background, (not actively open, but in the background, not closed) the notification smallIcon and LargeIcon doesn't appear, the default ones for android appears instead, also if I changed

 intent = new Intent(this, HomeDrawer.class);

to any other activity class, it doesn't open the class I specified and opens the last class I left open in the background.

What am I doing wrong? SmallIcon and LargeIcon are not working properly if the background. However, notification message appears fine and also remoteMessage.getData(); gets the data correctly, it's all about the behavior of icons and intent class.

Thanks in advance.

See http://stackoverflow.com/questions/37809885/firebase-push-notifications-update-db/37843845#37843845 — Frank van Puffelen, Sep 25 '16 at 21:32
see https://stackoverflow.com/a/44800598/7329597 it is available.You can find solution and hope you will get your answer. — Sejal Baraiya, Jun 28 '17 at 11:02

Adam Fręśko · Accepted Answer · 2016-09-25T17:50:26.643

1

That happens because notifications are handled differently if your app is in background.

If app is running in foreground then yours FcmMessagingService will be executed and you are handling notifications on your own.

If app is not running, notifications are handled by the android system itseld.FcmMessagingService is never executed. For this case you have to properly setup icon on the server!

I believe this behaviour happens since introduction of doze mechanism.

The notification sent from server should look something like this

"notification" : {
  "body" : "great match!",
  "title" : "Portugal vs. Denmark",
  "icon" : "myicon", // the name of the resource
  "sound" : "mySound"
}

edited Sep 25 '16 at 17:50

answered Sep 25 '16 at 17:41

Adam Fręśko

1,064
9
14

Understandable, how can I setup icon on the server? Also for the intent class issue, how can I manage this? – MahmutTariq Sep 25 '16 at 17:44
@MahmoudTarek those clases supposed to be activities and should be registered in Manifest file. – Adam Fręśko Sep 25 '16 at 17:51
Updated answer to have notification template Please accept answer. – Adam Fręśko Sep 25 '16 at 17:51
Thank you, the "icon" attribute works but for small icon only, how can I get large icon to work too from the object itself? – MahmutTariq Sep 25 '16 at 17:57
It seems there is no support for large icon ATM. Look here for more info https://github.com/firebase/quickstart-android/issues/84 Please accept answer – Adam Fręśko Sep 25 '16 at 18:00
Thanks for your assistance. – MahmutTariq Sep 25 '16 at 18:22

Firebase notification doesn't work properly if application is in background

1 Answers1