[Messaging] On iOS onTokenRefresh not called / did I find a bug?

[ninoreiter]

Hello community,

the past few days I read a lot about onTokenRefresh() not being called. Some quick-fixes may work but seem a bit hacky (e.g. deleteToken() before getToken()). Not sure, if it's me, but I couldn't make it work or it only works after a second try.

The way I try to get a new token on iOS (clean install on real device) doesn't work.

main() {
  FirebaseMessaging.instance.onTokenRefresh.listen((String newToken) {
    // never called
  });
}

// Inside a widget
onPermissionButtonTap() {
  final notificationSettings = await FirebaseMessaging.instance.requestPermission(provisional: false);
  if (notificationSettings.authorizationStatus == AuthorizationStatus.authorized) {
    final newToken = await FirebaseMessaging.instance.getToken();
  }
}

Debugging / Bug?

I debugged FLTFirebaseMessagingPlugin.m and found out, FIRMessaging.m:862 receives a new token when requestPermission() is performed, but there is no FIRMessaging.delegate to pass the data to.

Actually, FLTFirebaseMessagingPlugin.m:179 is meant to be the delegate but is not assigned. In previous commits I figured out, FLTFirebaseMessagingPlugin.m once was set to [FIRMessage message].delegate but the line was removed.

Before I create a bug-ticket, I first want to check with you, if this really is an issue.

Thank you.
Nino