BluetoothApp class

main.dart

class BluetoothApp extends StatefulWidget {
  @override
  _BluetoothAppState createState() => _BluetoothAppState();
}

class _BluetoothAppState extends State<BluetoothApp> {
  // Initializing a global key, as it would help us in showing a SnackBar later
  final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();
  // Get the instance of the bluetooth
  FlutterBluetoothSerial bluetooth = FlutterBluetoothSerial.instance;

  // Define some variables, which will be required later
  List<BluetoothDevice> _devicesList = [];
  BluetoothDevice _device;
  bool _connected = false;
  bool _pressed = false;

  @override
  Widget build(BuildContext context) {
    return Container(
      // We have to work on the UI in this part
    );
  }
}