MissingPluginException when calling external plugin via firebase_messaging onBackgroundMessage

[joshuakoh1]

I'm trying to call a function from within firebase_messaging's onBackgroundMessage. The function works when called from the function registered to onMessage but throws plugin error from the function registered to onBackgroundMessage.

void sendTargetSMS(TargetSMS sms) async {
  SmsSender sender = new SmsSender();
  try {
    SimCardsProvider provider = new SimCardsProvider();
    List<SimCard> cards = await provider.getSimCards();
    ...
  } catch (error) {
    print(error.toString());
  }
}

This works with no errors when called from the onMessage function that is within the MyApp function

  Future notificationOnMessage(Map<String, dynamic> message) async {
    print('OnMessage');
    ...
    try {
      sendTargetSMS(sms);
    } catch (e) {
      print(e);
    }
  }

But when calling this same function from onBackgroundMessage function which exists outside of the main MyApp function

Future notificationOnBackground(Map<String, dynamic> message) async {
  print('OnBackground');
  ...
  try {
    sendTargetSMS(sms);
  } catch (e) {
    print(e);
  }
}

I get missing plugin exception

MissingPluginException(No implementation found for method getSimCards on channel plugins.babariviere.com/simCards)

Both of them are init via configureFirebase

  void configureFirebase(FirebaseMessaging _firebaseMessaging) {
    try {
      _firebaseMessaging.configure(
        onMessage: notificationOnMessage,
        onLaunch: notificationOnLaunch,
        onResume: notificationOnResume,
        onBackgroundMessage: notificationOnBackground,
      );
    } catch (e) {
      print('Error Config Firebase');
      print(e);
    }
  }

[darshankawar]

Hi @joshuakoh1,
This seems to be an issue with the 3rd party plugin you are using flutter_sms.
Please consider opening this issue against their repo https://github.com/babariviere/flutter_sms.
Closing this since it doesn't seem to be an issue with firebase_messaging.
If you disagree, write in comments and I'll reopen.
Thanks.