Flutter Bloc auth不会听（卡在Ongenerateroute）

Question

IAM当前在Bloc上学习，我遵循此代码 https://github.com/felangel/bloc/tree/master/master/examples/flutter_login 但是，当IAM运行时，但是我陷入了Splashscreen，无法

使用粘贴垃圾箱穿过仪表板 /登录页IAM，因为我收到了警告，看起来您的帖子主要是代码；请添加更多详细信息。

mymain

class MyApp extends StatelessWidget {
  final _navigatorKey = GlobalKey<NavigatorState>();
  NavigatorState get _navigator => _navigatorKey.currentState!;
  @override
  Widget build(BuildContext context) {
    final _authenticationRepository = AuthRepository();
    return RepositoryProvider.value(
      value: _authenticationRepository,
      child: BlocProvider(
          create: (_) => AuthBloc(authRepository: _authenticationRepository),
          child: MaterialApp(
            navigatorKey: _navigatorKey,
            builder: (context, child) {
              return BlocListener<AuthBloc, AuthState>(
                listener: (context, state) {
                  switch (state.status) {
                    case AuthStatus.authenticated:
                      _navigator.pushAndRemoveUntil<void>(
                        DashBoard.route(),
                        (route) => false,
                      );
                      break;
                    case AuthStatus.unauthenticated:
                      _navigator.pushAndRemoveUntil<void>(
                        LoginPage.route(),
                        (route) => false,
                      );
                      break;
                    default:
                      _navigator.pushAndRemoveUntil<void>(
                        LoginPage.route(),
                        (route) => false,
                      );
                      break;
                  }
                },
                child: child,
              );
            },
            onGenerateRoute: (_) => SplashScreen.route(),
          )),
    );
  }
}

myauthbloc

https://pastebin.com/BQnhDeFE

myauthstate

https://pastebin.com/fmfnMwCV

myauthevent，

https://pastebin.com/tcEeqQsr

通过在飞溅屏幕上添加initstate并调用自动启动

  @override
  void initState() {
    context.read<AuthBloc>().add(AuthInitial());
    super.initState();
  }

Answer 1

您可以在存在存储库上的订阅：

 _authenticationStatusSubscription = _authenticationRepository.status.listen(
      (status) => add(AuthenticationStatusChanged(status)),
    );

authenticationRepository 触发拳头 authenticationStatusChanged 事件，

因为您是从Bloc库开始的，所以我建议您用 blocobserver ：

void main() {
  BlocOverrides.runZoned(
    () => runApp(const App()),
    blocObserver: AppBlocObserver(),
  );
}

/// Custom [BlocObserver] that observes all bloc and cubit state changes.
class AppBlocObserver extends BlocObserver {
  @override
  void onChange(BlocBase bloc, Change change) {
    super.onChange(bloc, change);
    if (bloc is Cubit) print(change);
  }

  @override
  void onTransition(Bloc bloc, Transition transition) {
    super.onTransition(bloc, transition);
    print(transition);
  }
}

如果事件在那里，它将简化学习过程和验证