Tukukkk

In my Android app I need to handle receiving of Firebase push notification messages, so that I can manipulate their ids (so that all notifications display rather than replacing each other) and so that I can display an app icon (setting it with a meta-data element in Android manifest doesn't work.)

I've creating a messaging service to handle receiving messages:

[Service (Name = "com.rpr.mobile.droid.LocalyticsFirebaseMessagingService")]

    [IntentFilter (new { "com.google.firebase.MESSAGING_EVENT" })]

    public class LocalyticsFirebaseMessagingService : FirebaseMessagingService {

        private static int notificationId = 0;



        public override void OnMessageReceived (RemoteMessage message) {

            if (!message.Data.ContainsKey ("ll")) {

                base.OnMessageReceived (message);

            } else {

                var body = message.GetNotification ().Body;

                if (!String.IsNullOrEmpty (body)) {

                    var mainIntent = new Intent (this, typeof (IntentActivity));

                    var deepLinkUrl = "";

                    if (message.Data.TryGetValue ("ll_deep_link_url", out deepLinkUrl))

                        mainIntent.SetData (Android.Net.Uri.Parse (deepLinkUrl));

                    var launchIntent = PendingIntent.GetActivity (this, 1, mainIntent, PendingIntentFlags.UpdateCurrent);



                    var builder = new NotificationCompat.Builder (this)

                        .SetSmallIcon (Resource.Drawable.logo_blue_small)

                        .SetContentTitle (GetString (Resource.String.application_name))

                        .SetContentText (body)

                        .SetStyle (new NotificationCompat.BigTextStyle ().BigText (body))

                        .SetContentIntent (launchIntent)

                        .SetDefaults (-1)

                        .SetAutoCancel (true);



                    var notificationManager = NotificationManagerCompat.From (this);

                    notificationManager.Notify (notificationId++, builder.Build ());

                }

            }

        }

    }

And I've defined it in the application section of my Android manifest:

<service android:name="com.rpr.mobile.droid.LocalyticsFirebaseMessagingService">

            <intent-filter>

                <action android:name="com.google.firebase.MESSAGING_EVENT" />

            </intent-filter>

        </service>

However, when I receive a push notification this code is never called, even when the app is in the foreground. I had similar code that worked fine for GCM push notifications, but I'm having no luck for Firebase. What am I missing?

You have to add the below code to your android manifest file inside application section:

<receiver android:name="com.google.firebase.iid.FirebaseInstanceIdInternalReceiver" android:exported="false" />

    <receiver android:name="com.google.firebase.iid.FirebaseInstanceIdReceiver" android:exported="true" android:permission="com.google.android.c2dm.permission.SEND">

        <intent-filter>

            <action android:name="com.google.android.c2dm.intent.RECEIVE" />

            <action android:name="com.google.android.c2dm.intent.REGISTRATION" />

            <category android:name="${applicationId}" />

        </intent-filter>

    </receiver>

and in your class you have to add like this

[Service]

[IntentFilter(new { "com.google.firebase.MESSAGING_EVENT" })]

public class MessagingService : FirebaseMessagingService

and this is the code to get the token

[Service]

[IntentFilter(new { "com.google.firebase.INSTANCE_ID_EVENT" })]

public class IDService : FirebaseInstanceIdService

also you have to add the google-services.json file to your project with the build action GoogleServicesJson