There is a service that should be responsible for receiving messages in the active application.

public class MyFirebaseMessagingService extends FirebaseMessagingService { @Override public void onMessageReceived(RemoteMessage remoteMessage) { sendNotification(remoteMessage.getNotification().getBody()); } private void sendNotification(String messageBody) { Intent intent = new Intent(this, MainActivity.class); intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION); NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this) .setSmallIcon(R.mipmap.ic_launcher) .setLargeIcon(BitmapFactory.decodeResource(this.getResources(), R.mipmap.ic_launcher_round)) .setContentTitle(this.getString(R.string.app_name)) .setContentText(messageBody) .setAutoCancel(true) .setSound(defaultSoundUri); NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); notificationManager.notify(0, notificationBuilder.build()); }}

Spelled out in the manifest

  <service android:name=".MyFirebaseMessagingService"> <intent-filter> <action android:name="com.google.firebase.MESSAGING_EVENT"/> </intent-filter> </service>

But when you send a push, the application on a real device does not show it, although everything works in the emulator.

  • one
    There can be a lot of reasons, it is necessary from you additionally: - the SDK version + on which device you launch, - whether the token came to the server or a subscription to the topic, - whether the message reaches the client (log in), - the device status (connected to power, is there a network ), etc. - Serge Markov

0