using Android.App; using Android.Content; using Firebase.Iid; using Android.Util; namespace FCMTest { [Service] [IntentFilter(new[] { "com.google.firebase.INSTANCE_ID_EVENT" })] public class MyFirebaseIIDService : FirebaseInstanceIdService { const string TAG = "FCMTest MyFirebaseIIDService"; public override void OnTokenRefresh() { var refreshedToken = FirebaseInstanceId.Instance.Token; Log.Debug(TAG, "Refreshed token: " + refreshedToken); SendRegistrationToServer(refreshedToken); } void SendRegistrationToServer(string token) { // Add custom implementation, as needed. } } }