How to receive push notifications when the app is closed?

Question

Java

Hello everyone, I implemented a service that receives pushes, when the application is minimized, they come, and when you close it, they don’t come, this is firebase cloud messaging, does anyone know what could be the reason?
service:

public class FirebaseMessagingService extends com.google.firebase.messaging.FirebaseMessagingService  {
    private static final String TAG = "FirebaseMessagingServic";

    public FirebaseMessagingService() {
    }

    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        // Check if message contains a data payload.
        remoteMessage.getData();

        if (remoteMessage.getData().size() > 0) {
            Log.d(TAG, "Message data payload: " + remoteMessage.getData());
            try {
                JSONObject data = new JSONObject(remoteMessage.getData());
                String jsonMessage = data.getString("extra_information");
                Log.d(TAG, "onMessageReceived: \n" +
                        "Extra Information: " + jsonMessage);
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }

        // Check if message contains a notification payload.
        if (remoteMessage.getNotification() != null) {
            String title = remoteMessage.getNotification().getTitle(); //get title
            String message = remoteMessage.getNotification().getBody(); //get message
            String click_action = remoteMessage.getNotification().getClickAction(); //get click_action

            Log.d(TAG, "Message Notification Title: " + title);
            Log.d(TAG, "Message Notification Body: " + message);
            Log.d(TAG, "Message Notification click_action: " + click_action);

            sendNotification(title, message,click_action);
        }
    }

    @Override
    public void onDeletedMessages() {

    }

    private void sendNotification(String title,String messageBody, String click_action) {
        Intent intent;
        if(click_action.equals("SOMEACTIVITY")){
            intent = new Intent(this, AlbumListActivity.class);
            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        }
        else if(click_action.equals("MAINACTIVITY")){
            intent = new Intent(this, GreetingActivity.class);
            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        }else{
            intent = new Intent(this, GreetingActivity.class);
            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        }

        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent,
                PendingIntent.FLAG_ONE_SHOT);

        Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        NotificationCompat.Builder notificationBuilder = (NotificationCompat.Builder) new NotificationCompat.Builder(this)
                .setSmallIcon(R.drawable.ic_launcher)
                .setContentTitle(title)
                .setContentText(messageBody)
                .setAutoCancel(true)
                .setSound(defaultSoundUri)
                .setContentIntent(pendingIntent);

        NotificationManager notificationManager =
                (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

        notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());
    }
}

Answer 1

No way.
RTFM https://firebase.google.com/docs/cloud-messaging/a...
When your app is in the background, Android directs notification messages to the system tray. A user tap on the notification opens the app launcher by default.
This includes messages that contain both notification and data payload (and all messages sent from the Notifications console). In these cases, the notification is delivered to the device's system tray, and the data payload is delivered in the extras of the intent of your launcher Activity.