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DefaultPushNotificationHandler.OnReceive error under Android (both 7.1.1 & 8.1.0)

See original GitHub issue

Version Number of Plugin: 2.3.0 Device Tested On: Google Pixel XL (Android 8.1.0) Simulator Tested On: AVD for Nexus 6, (Android 7.1.1) Version of VS: 15.5.6 Version of Xamarin: 2.5.0.122203 Versions of other things you are using:

Xamarin.Android.Support.v4: 26.1.0.1,
All other Xamarin.Android.Support libs are version 25.3.1

Hi,

I’m implementing your plugin for a solution in both iOS and Android. iOS works pretty fine, no issues there. But on Android I have null references when I receive a notification from FCM. I’ve set up everything as in your guides/examples using the DefaultPushNotificationHandler. Now everything is fine until i receive the notification under Android:

Steps: Your setup as described in your tutorial steps. Also using the methods from Application.IActivityLifecycleCallbacks in Android’s MainApplication.cs

Expected Behavior: To pop up a notification

Actual Behavior: Error in method CrossFirebasePushNotification.Current.NotificationHandler.OnReceived(p.Data);

03-09 13:21:23.471 I/MonoDroid(17066): UNHANDLED EXCEPTION: 03-09 13:21:23.480 I/MonoDroid(17066): System.MissingMethodException: Method ‘Android.Support.V4.App.NotificationCompat/Builder…ctor’ not found. 03-09 13:21:23.481 I/MonoDroid(17066): at Plugin.FirebasePushNotification.PNFirebaseMessagingService.OnMessageReceived (Firebase.Messaging.RemoteMessage message) [0x001d3] in C:\Plugins\FirebasePushNotification\src\Plugin.FirebasePushNotification.Android\PNFirebaseMessagingService.cs:64 03-09 13:21:23.481 I/MonoDroid(17066): at Firebase.Messaging.FirebaseMessagingService.n_OnMessageReceived_Lcom_google_firebase_messaging_RemoteMessage_ (System.IntPtr jnienv, System.IntPtr native__this, System.IntPtr native_message) [0x0000f] in <c9c78f979e004ecbb4a1706c3d5c466b>:0 03-09 13:21:23.481 I/MonoDroid(17066): at (wrapper dynamic-method) System.Object:eefe38d2-cd7d-44f0-8cfa-a2ed5f5d3ebd (intptr,intptr,intptr)

Code snippet:

CrossFirebasePushNotification.Current.OnNotificationReceived += (s, p) => { try { CrossFirebasePushNotification.Current.NotificationHandler.OnReceived(p.Data); } catch (Exception ex) { Debug.WriteLine(ex.Message); } };