Flutter switch widget

import 'package:rxdart/rxdart.dart';

class Bloc{

  //initialize bool type controller
  final _switchController = BehaviorSubject<bool>();

  /// Add data to the stream
  Function(bool) get setSwitch => _switchController.sink.add;

  /// Validate and retrieve data from the stream
  Stream<bool> get getSwitch => _switchController.stream;

}

import 'package:bloc_flutter_switch/Bloc.dart';

StreamBuilder(
              stream: bloc.getSwitch,
              builder: (context,snapshot){
                  return Row(
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: <Widget>[
                      Text("${snapshot.data??false}"),
                Switch(
                value: snapshot.data??false,
                activeColor: Colors.green,
                onChanged: (b) {
                bloc.setSwitch(b);
                },
                )
                    ],
                  );
          })