App not showing Notification receiving FCM when the app is Open

Question

When I send a push from Firebase, if the app is in background or closed, I'm receiving the notification, but when the app is open not...

Debugging I've observed that it's stopping in MyMessagingService specifically at onMessageReceived, so I guess that my problem is in regards of generating the notification (or maybe the intent which goes with the notification).

I've implemented the service:

public class MyMessagingService extends FirebaseMessagingService {
private static final String TAG = "MyMessagingService";
@Override
public void onMessageReceived(RemoteMessage remoteMessage)
{
    Log.d(TAG, "From: " + remoteMessage.getFrom());

    if(remoteMessage!=null)
    {
        String id = null;
        String title = null;
        String message = null;
        String launchPage = null;

        if(remoteMessage.getNotification()!=null)
        {
            if(remoteMessage.getNotification().getTitle()!=null)
            {
                title = remoteMessage.getNotification().getTitle();
            }

            if(remoteMessage.getNotification().getBody()!=null)
            {
                message = remoteMessage.getNotification().getBody();
            }
        }

        if(remoteMessage.getMessageId()!=null)
        {
            id = remoteMessage.getMessageId();
        }

        Log.e(TAG, "id: " + id);
        Log.e(TAG, Consts.TITLE + title);
        Log.e(TAG, Consts.MESSAGE + ": " + message);

        // Check if message contains a data payload.
        if (remoteMessage.getData()!=null && remoteMessage.getData().size() > 0)
        {
            Log.d(TAG, "Message data payload: " + remoteMessage.getData());

            if(remoteMessage.getData().containsKey(Consts.LAUNCH_PAGE))
            {
                launchPage = remoteMessage.getData().get(Consts.LAUNCH_PAGE);
            }

            Log.e(TAG, Consts.LAUNCH_PAGE + ": " + launchPage);

            sendNotification(title, message, launchPage);

        }
    }
}
// [END receive_message]

/**
 * Create and show a simple notification containing the received FCM message.
 *
 * @param messageBody FCM message body received.
 */
private void sendNotification(String title, String messageBody, String page)
{
    Intent intent = new Intent(this, MainActivity.class);

    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

    intent.putExtra(Consts.TITLE, title);
    intent.putExtra(Consts.MESSAGE, messageBody);
    if (launchPage != null)
    {
        intent.putExtra(Consts.LAUNCH_PAGE, launchPage);
    }

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

    String channelId = getString(R.string.default_notification_channel_id);
    Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    NotificationCompat.Builder notificationBuilder =
            new NotificationCompat.Builder(this, channelId)
            .setSmallIcon(R.drawable.status)
            .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());
} }

In my manifest I have:

 <!-- [START fcm_default_icon] -->
    <meta-data
        android:name="com.google.firebase.messaging.default_notification_icon"
        android:resource="@drawable/status" />

    <meta-data
        android:name="com.google.firebase.messaging.default_notification_color"
        android:resource="@color/accent" />
    <!-- [END fcm_default_icon] -->
    <!-- [START fcm_default_channel] -->
    <meta-data
        android:name="com.google.firebase.messaging.default_notification_channel_id"
        android:value="@string/default_notification_channel_id"/>
    <!-- [END fcm_default_channel] -->

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

    <service
        android:name=".controller.service.MyInstanceIDService">
        <intent-filter>
            <action android:name="com.google.firebase.INSTANCE_ID_EVENT"/>
        </intent-filter>
    </service>

Any suggestion of how to generate the notification when the app is en foreground?

Answer 1

Change your MyFirebaseMessagingService code,

public class MyFirebaseMessagingService extends FirebaseMessagingService {

@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
    super.onMessageReceived(remoteMessage);
    Log.d("msg", "onMessageReceived: " + remoteMessage.getData().get("message"));

        Intent intent = new Intent(this, MainActivity.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_ONE_SHOT);
        String channelId = "Default";
        NotificationCompat.Builder builder = new  NotificationCompat.Builder(this, channelId)
                .setSmallIcon(R.mipmap.ic_launcher)
                .setContentTitle(remoteMessage.getNotification().getTitle())
                .setContentText(remoteMessage.getNotification().getBody()).setAutoCancel(true).setContentIntent(pendingIntent);;
        NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            NotificationChannel channel = new NotificationChannel(channelId, "Default channel", NotificationManager.IMPORTANCE_DEFAULT);
            manager.createNotificationChannel(channel);
        }
        manager.notify(0, builder.build());
     }
 }

check - How to handle the fire base notification when app is in foreground