MyFirebaseMessagingService.java

public class MyFirebaseMessagingService extends FirebaseMessagingService {

    private static final String TAG = MyFirebaseMessagingService.class.getSimpleName();
    
    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
    
        if (remoteMessage.getData() != null && remoteMessage.getData().size() > 0) {
            Map<String, String> data = remoteMessage.getData();
            Log.d(TAG, data.toString());
        }
        
        if (remoteMessage.getNotification() != null) {
            Log.d(TAG, remoteMessage.getNotification().getBody());
        }
        
    }
    
}