Flutter connectivity cubit

connectivity_cubit.dart

import 'package:bloc/bloc.dart';
import 'package:connectivity/connectivity.dart';

part 'connectivity_state.dart';

class ConnectivityCubit extends Cubit<ConnectivityState> {
  ConnectivityCubit() : super(const ConnectivityInitial()) {
    final connectivity = Connectivity();
    connectivity.checkConnectivity().then(_onConnectivityChanged);
    connectivity.onConnectivityChanged.listen(_onConnectivityChanged);
  }

  Future<void> _onConnectivityChanged(ConnectivityResult result) async {
    switch (result) {
      case ConnectivityResult.none:
        emit(const ConnectivityOffline());
        break;
      case ConnectivityResult.mobile:
      case ConnectivityResult.wifi:
        emit(const ConnectivityOnline());
    }
  }
}

connectivity_state.dart

part of 'connectivity_cubit.dart';

abstract class ConnectivityState {
  const ConnectivityState();
}

class ConnectivityInitial extends ConnectivityState {
  const ConnectivityInitial() : super();
}

class ConnectivityOnline extends ConnectivityState {
  const ConnectivityOnline() : super();
}

class ConnectivityOffline extends ConnectivityState {
  const ConnectivityOffline() : super();
}