Initialization problem on Android with version > 2.3.6

I have an Xamarin Forms app with version 2.3.6 of the plugin and try to update to a more recent version.

On iOS, no problems but on Android, I tried many versions and I always get this error during FirebasePushNotificationManager.Initialize(this, true, createDefaultNotificationChannel:false)

Default FirebaseApp is not initialized in this process … Make sure to call FirebaseApp.initializeApp(Context) first

My google-services.json file and package names are OK.

Here is my MainApplication init code, CreateNotificationChannels() create notifications channels if required.

Is there something in newer version that may require some code change ?

    public override void OnCreate() {
        base.OnCreate();

    if (Build.VERSION.SdkInt >= Android.OS.BuildVersionCodes.O) {
            CreateNotificationChannels();
        }
        CrossFirebasePushNotification.Current.OnNotificationError += (object source, FirebasePushNotificationErrorEventArgs e) => {
            Console.WriteLine("OnNotificationError " + e.Message);
        };
        EchoMessager.Sync.Server.GetInstance().SetNotificationToken(CrossFirebasePushNotification.Current.Token);
        CrossFirebasePushNotification.Current.OnTokenRefresh += (s, p) => {
            EchoMessager.Sync.Server.GetInstance().SetNotificationToken(p.Token);
            Server.GetInstance().RegisterDevice();
        };

        CrossFirebasePushNotification.Current.OnNotificationReceived += (s, p) => {
            EchoMessager.Sync.Server.GetInstance().ProcessNotification(p.Data);
        };

#if DEBUG
        FirebasePushNotificationManager.Initialize(this, true, createDefaultNotificationChannel:false);
#else
        FirebasePushNotificationManager.Initialize(this,false, createDefaultNotificationChannel:false);
#endif
    }

Bug Information

Version Number of Plugin: >2.3.6 Device Tested On: Simulator Tested On: multiple (API level Version of VS: Mac 8.4.2

[Haza85]

I have add Xamarin.Firebase.Common package directly to Android project and it’s work now. Don’t forget to clean Anndoid project (manually delete bin and obj folders) and rebuild.

[ivandharo]

I have add Xamarin.Firebase.Common package directly to Android project and it’s work now. Don’t forget to clean Anndoid project (manually delete bin and obj folders) and rebuild.

Thanks for the solution bro!!!