How to handle FCM Push notification when app is in background or killed in Android Oreo?

[yaramvenki]

Question 1: How to handle FCM Push notification when app is in background or killed in Android?

• I implemented FCM push notifications, i am getting data as well notification data like remoteMessage.getNotification() and remoteMessage.getData().size() > 0. Now, i am able to get data from both when app is in foreground. How to get both/single data when app is in background?

Question 2: I am getting notification when app is in background, but on click of that notification it is not launching activity? how to implement that?(Android)

implementation 'com.google.firebase:firebase-core:16.0.6'
implementation 'com.google.firebase:firebase-messaging:17.3.4'

public class HealthAppMessagingService extends FirebaseMessagingService {
    @Override
    public void onNewToken(String s) {
        super.onNewToken(s);
    }
    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        super.onMessageReceived(remoteMessage);
        if (remoteMessage.getNotification() != null) {
            title = remoteMessage.getNotification().getTitle();
            messageBody = remoteMessage.getNotification().getBody();
        }
        if (remoteMessage.getData().size() > 0) {
            try{
                type = remoteMessage.getData().get("type");
                time = remoteMessage.getData().get("time");
              
                Intent resultIntent = new Intent(getApplicationContext(), MainActivity.class);
                resultIntent.putExtra("message", messageBody);
                showNotificationMessage(title, messageBody, time, resultIntent, null);
            } catch (Exception e){
                Log.e(TAG, "Exception: " + e.getMessage());
            }
        }
    }
}

How to get notification data and data when app is in background? how to implement code for that?

[darshakpatel1212]

same issue in marshmallow when app kill by user or in back ground and user click on notification then app not launch activity

[tareqassi]

did you manage to get answers for your questions ?

[kroikie]

@yaramvenki
Question 1: Data messages (messages with no notification payload) are handled the same whether the app is in the foreground or background. Notification messages (messages with a notification payload) automatically generate a visible notification (does not trigger onMessageReceived), if the user taps on the visible notification any data payload will be available in the extras of the launched intent.

Question 2: Looks like you are generating the notification yourself, after you get the onMessageReceived callback it is standard Android framework stuff from then on, not FCM specific. For an example of how to create a notification that launches an intent see the sample.

[baderkhane]

    // Handle possible data accompanying notification message.
    // [START handle_data_extras]
    if (getIntent().getExtras() != null) {
        for (String key : getIntent().getExtras().keySet()) {
            Object value = getIntent().getExtras().get(key);
            Log.d(TAG, "Key: " + key + " Value: " + value);
        }
    }