当我点击文本字段开始写作，文本字段出现并立即消失.我试图删除ScreenUtil部件，它的工作，但我也试图通过删除ScreenUtils部件，它也工作，以取代生成路由GoRouter.但我需要这个ScreenUtils部件，以实现响应式应用程序
这是我的代码
main.dart:

import 'package:bloc/bloc.dart';
import 'package:elcampione/presentation/app.dart';
import 'package:elcampione/presentation/bloc_observer.dart';
import 'package:firebase_core/firebase_core.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'data/repositories/repositories.dart';
import 'firebase_options.dart';

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  // Prevent screen from rotating
  SystemChrome.setPreferredOrientations(
      [DeviceOrientation.portraitUp, DeviceOrientation.portraitDown]);

  Bloc.observer = AppBlocObserver();
  await Firebase.initializeApp(
    options: DefaultFirebaseOptions.currentPlatform,
  );

  final authenticationRepository = AuthenticationRepository();

  await authenticationRepository.user.first;

  runApp(App(authenticationRepository: authenticationRepository));
}

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app.dart:

import 'package:elcampione/blocs/auth/auth_bloc.dart';
import 'package:elcampione/presentation/themes/theme.dart';
import 'package:elcampione/routes/routes.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import '../data/repositories/repositories.dart';

class App extends StatelessWidget {
  const App({
    super.key,
    required AuthenticationRepository authenticationRepository,
  }) : _authenticationRepository = authenticationRepository;

  final AuthenticationRepository _authenticationRepository;

  @override
  Widget build(BuildContext context) {
    return RepositoryProvider<AuthenticationRepository>(
      create: (context) => _authenticationRepository,
      child: BlocProvider(
        create: (_) => AuthBloc(
          authenticationRepository: _authenticationRepository,
        ),
        child: const AppView(),
      ),
    );
  }
}

class AppView extends StatelessWidget {
  const AppView({Key? key}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    final state = context.select((AuthBloc bloc) => bloc.state.status);
    final isAuthenticated = state == AuthStatus.authenticated;
    return ScreenUtilInit(
      builder: (context, child) => MaterialApp.router(
        debugShowCheckedModeBanner: false,
        theme: ThemeData(useMaterial3: true, colorScheme: darkColorScheme),
        darkTheme: ThemeData(useMaterial3: true, colorScheme: darkColorScheme),
        title: 'El Campione',
        locale: const Locale('en'),
        routerConfig: AppRouter.router(isAuthenticated),
      ),
      designSize: const Size(390, 844),
    );
  }
}

型
app_route_config.dart：

import 'package:elcampione/presentation/screens/screens.dart';
import 'package:elcampione/routes/app_route_constants.dart';
import 'package:flutter/material.dart';
import 'package:go_router/go_router.dart';

class AppRouter {
  static GoRouter router(bool isAuthenticated) {
    GoRouter routes = GoRouter(
      initialLocation: isAuthenticated ? '/home' : '/signin',
      routes: [
        GoRoute(
          name: AppRoutesConstants.home,
          path: '/home',
          builder: (context, state) => const HomeScreen(),
        ),
        GoRoute(
          name: AppRoutesConstants.signIn,
          path: '/signin',
          builder: (context, state) => const SignInScreen(),
        ),
        GoRoute(
          name: AppRoutesConstants.signUp,
          path: '/signup',
          builder: (context, state) => const SignUpScreen(),
        )
      ],
      redirect: (context, state) => !isAuthenticated ? '/signin' : null,
    );
    return routes;
  }
}

型