bloc_file.dart

class ProfilePreferencesBloc {
  final _user = BehaviorSubject<AuthResponse>();
  static const String USER = "USER";

  //Getters
  Stream<AuthResponse> get user => _user.stream;

  //Setters
  Function(AuthResponse) get changeUserProfileDetails => _user.sink.add;

  editProfileDetails(user) async {
    SharedPreferences prefs = await SharedPreferences.getInstance();
    prefs.remove(USER);
    prefs.setString(USER, json.encode(user).toString());
  }

  getProfileDetails() async {
    SharedPreferences prefs = await SharedPreferences.getInstance();
    String user = prefs.get(USER);

    AuthResponse authResponse = json.decode(user);
    if (authResponse != null) {
      changeUserProfileDetails(authResponse);
    }
    changeUserProfileDetails(authResponse);
  }

  dispose() {
    _user.close();
  }
}