type 'Future<dynamic>' is not a subtype of type 'FutureOr<int>' in type cast

[hmney]

Problem summary

Hello folks, I will explain what's happened to me (you can check first my environment before continue reading). I tried to get my Bluetooth state from the state getter in the file FlutterBluetoothSerial.dart, and I got this exception type 'Future<dynamic>' is not a subtype of type 'FutureOr<int>' in type cast. So I went to the file and I tried this code https://github.com/edufolly/flutter_bluetooth_serial/blob/50bf77837d7956c13b0611c298a8041d524114fa/lib/FlutterBluetoothSerial.dart#L51-L52 and I get my state.

So the problem was solved with me but I want to know if I'm wrong in anything here. by the way this my first essay for me to contribute in open source, forgive me if I'm wrong in anything.

this is my commit to fix the problem: https://github.com/edufolly/flutter_bluetooth_serial/commit/b2c40234655ca23c5865ac167aa2db9dc98d0341

if I'm right maybe the same problem will be happening here: https://github.com/edufolly/flutter_bluetooth_serial/blob/50bf77837d7956c13b0611c298a8041d524114fa/lib/FlutterBluetoothSerial.dart#L94-L98

Code to test

https://gist.github.com/hmney/b4d0bb3e74c9675b247bb82a60eff95f

Environment

Flutter 2.2.2 • channel stable • https://github.com/flutter/flutter.git Framework • revision d79295af24 (4 weeks ago) • 2021-06-11 08:56:01 -0700 Engine • revision 91c9fc8fe0 Tools • Dart 2.13.3

[afonsocraposo]

I also get this error with getBondStateForAddress.