fix(apps): consolidate FormzInput validators and fix login screen

- Move FormzInput validators to core/form_inputs/form_inputs.dart
- Fix login_screen.dart syntax error (missing 'class' keyword)
- Remove unused _isLoading field
- Fix unnecessary const keywords
- Update login_cubit and register_cubit imports
- Remove duplicate FormzInput definitions from register_cubit
- Add Toast and Banner UI feedback system
- Remove legacy login/register screens (login_code, login_email, login_password, register_step2)
- Remove unused warning_banner widget
- Update tests for new error messages and DI setup

apps/AGENTS.md

@@ -45,3 +45,42 @@ For important screens, add widget tests that reduce layout-regression risk:
 - Do not skip design container layers.
 - Do not start implementation before retrieving design variables.
 - Do not hardcode colors; use design variables.
+
+## UI Feedback System
+
+**MUST use the Toast system for all user feedback messages.**
+
+### Components
+
+| Component | Use Case | Example |
+|-----------|----------|---------|
+| `Toast.show()` | Global temporary notifications | Success/error feedback after action |
+| `AppBanner` | Inline form validation errors | Login form error message |
+
+### Toast Types
+
+```dart
+enum ToastType { info, success, warning, error }
+```
+
+### Usage Examples
+
+**Global Toast (auto-dismiss):**
+```dart
+Toast.show(context, '保存成功', type: ToastType.success);
+Toast.show(context, '网络错误', type: ToastType.error);
+Toast.show(context, '正在加载...', type: ToastType.info, duration: Duration(seconds: 3));
+```
+
+**Inline Banner (persistent):**
+```dart
+AppBanner(message: '邮箱或密码错误', type: ToastType.error)
+AppBanner(message: '请检查输入', type: ToastType.warning)
+```
+
+### Rules
+
+- Use `Toast` for transient feedback that auto-dismisses
+- Use `AppBanner` for persistent inline messages (form errors)
+- Do NOT create custom SnackBar, Dialog, or Banner components
+- Do NOT use raw `ScaffoldMessenger`

apps/lib/core/api/api_client.dart

@@ -6,36 +6,42 @@ import '../storage/token_storage.dart';
 class ApiClient {
   final Dio _dio;
   final TokenStorage _tokenStorage;
-  final Future<bool> Function(String)? _refreshToken;
+  final ApiInterceptor _interceptor;
 
-  ApiClient({
+  factory ApiClient({
     required String baseUrl,
     required TokenStorage tokenStorage,
     Dio? dio,
-    Future<bool> Function(String)? refreshToken,
+  }) {
-  }) : _tokenStorage = tokenStorage,
+    final effectiveDio = dio ?? Dio(BaseOptions(baseUrl: baseUrl));
-       _refreshToken = refreshToken,
+    final interceptor = ApiInterceptor(
-       _dio = dio ?? Dio(BaseOptions(baseUrl: baseUrl)) {
+      tokenStorage: tokenStorage,
-    _dio.interceptors.add(
+      dio: effectiveDio,
-      ApiInterceptor(
+    );
-        tokenStorage: _tokenStorage,
+    effectiveDio.interceptors.add(interceptor);
-        dio: _dio,
+    return ApiClient._(
-        onTokenRefresh: _handleTokenRefresh,
+      dio: effectiveDio,
-      ),
+      tokenStorage: tokenStorage,
+      interceptor: interceptor,
     );
   }
 
+  ApiClient._({
+    required Dio dio,
+    required TokenStorage tokenStorage,
+    required ApiInterceptor interceptor,
+  }) : _dio = dio,
+       _tokenStorage = tokenStorage,
+       _interceptor = interceptor;
+
   Dio get dio => _dio;
 
-  Future<bool> _handleTokenRefresh() async {
+  void setRefreshCallback(Future<bool> Function(String) refresh) {
-    final refreshToken = await _tokenStorage.getRefreshToken();
+    _interceptor.onTokenRefresh = () async {
-    if (refreshToken == null || _refreshToken == null) return false;
+      final token = await _tokenStorage.getRefreshToken();
-    try {
+      if (token == null) return false;
-      final success = await _refreshToken!(refreshToken);
+      return refresh(token);
-      return success;
+    };
-    } catch (_) {
-      return false;
-    }
   }
 
   Future<Response<T>> get<T>(String path, {Options? options}) async {

apps/lib/core/api/api_exception.dart

@@ -1,3 +1,5 @@
+import 'package:dio/dio.dart';
+
 abstract class ApiException implements Exception {
   final String message;
   final int? statusCode;
@@ -6,12 +8,58 @@ abstract class ApiException implements Exception {
 
   factory ApiException.fromDioError(Object error) {
     if (error is ApiException) return error;
-    return ServerException('Request failed: ${error.toString()}');
+    if (error is DioException) {
-  }
+      final response = error.response;
-}
+      final statusCode = response?.statusCode;
+      final data = response?.data;
 
-class NetworkException extends ApiException {
+      String detail;
-  const NetworkException(super.message);
+      if (data is Map<String, dynamic>) {
+        detail =
+            (data['detail'] ?? data['message'] ?? data['error'])?.toString() ??
+            '请求失败';
+      } else {
+        detail = '请求失败';
+      }
+
+      final localized = _localizeError(detail, statusCode);
+
+      if (statusCode == 401) {
+        return UnauthorizedException(localized);
+      }
+      if (statusCode == 422) {
+        return ValidationException(
+          localized,
+          errors: data,
+          statusCode: statusCode,
+        );
+      }
+      return ServerException(localized, statusCode: statusCode);
+    }
+    return const ServerException('网络错误');
+  }
+
+  static String _localizeError(String detail, int? statusCode) {
+    if (statusCode == 401) {
+      return '邮箱或密码错误';
+    }
+    if (statusCode == 403) {
+      return '没有权限执行此操作';
+    }
+    if (statusCode == 404) {
+      return '请求的资源不存在';
+    }
+    if (statusCode == 429) {
+      return '请求过于频繁，请稍后再试';
+    }
+    if (statusCode != null && statusCode >= 500) {
+      return '服务器错误，请稍后再试';
+    }
+    if (detail.contains('credentials') || detail.contains('password')) {
+      return '邮箱或密码错误';
+    }
+    return detail;
+  }
 }
 
 class ServerException extends ApiException {
@@ -19,7 +67,7 @@ class ServerException extends ApiException {
 }
 
 class UnauthorizedException extends ApiException {
-  const UnauthorizedException([super.message = 'Authentication required'])
+  const UnauthorizedException([super.message = '请重新登录'])
     : super(statusCode: 401);
 }
 

apps/lib/core/api/api_interceptor.dart

@@ -3,8 +3,8 @@ import '../storage/token_storage.dart';
 
 class ApiInterceptor extends Interceptor {
   final TokenStorage tokenStorage;
-  final Future<bool> Function()? onTokenRefresh;
   final Dio dio;
+  Future<bool> Function()? onTokenRefresh;
 
   ApiInterceptor({
     required this.tokenStorage,

apps/lib/core/config/env.dart

@@ -1,6 +1,12 @@
+import 'dart:io';
+
 class Env {
   static String get apiUrl {
     const url = String.fromEnvironment('API_URL');
-    return url.isNotEmpty ? url : 'http://localhost:8000';
+    if (url.isNotEmpty) return url;
+    if (Platform.isAndroid) {
+      return 'http://10.0.2.2:5775';
+    }
+    return 'http://localhost:5775';
   }
 }

apps/lib/core/di/injection.dart

@@ -12,17 +12,22 @@ import '../../features/auth/presentation/bloc/auth_bloc.dart';
 final sl = GetIt.instance;
 
 Future<void> configureDependencies() async {
+  if (sl.isRegistered<ApiClient>()) {
+    await sl.reset();
+  }
+
   final dio = Dio(BaseOptions(baseUrl: Env.apiUrl));
   final secureStorage = const FlutterSecureStorage();
   final tokenStorage = SecureTokenStorage(secureStorage);
 
-  sl.registerSingleton<Dio>(dio);
+  final apiClient = ApiClient(
-  sl.registerSingleton<FlutterSecureStorage>(secureStorage);
+    baseUrl: Env.apiUrl,
-  sl.registerSingleton<TokenStorage>(tokenStorage);
+    tokenStorage: tokenStorage,
-
+    dio: dio,
-  final authApi = AuthApi(
-    ApiClient(baseUrl: Env.apiUrl, tokenStorage: tokenStorage, dio: dio),
   );
+  sl.registerSingleton<ApiClient>(apiClient);
+
+  final authApi = AuthApi(apiClient);
   sl.registerSingleton<AuthApi>(authApi);
 
   final authRepository = AuthRepositoryImpl(
@@ -31,22 +36,14 @@ Future<void> configureDependencies() async {
   );
   sl.registerSingleton<AuthRepository>(authRepository);
 
-  sl.unregister<ApiClient>();
+  apiClient.setRefreshCallback((token) async {
-  sl.registerSingleton<ApiClient>(
+    try {
-    ApiClient(
+      await authRepository.refresh(token);
-      baseUrl: Env.apiUrl,
+      return true;
-      tokenStorage: tokenStorage,
+    } catch (_) {
-      dio: dio,
+      return false;
-      refreshToken: (token) async {
+    }
-        try {
+  });
-          await authRepository.refresh(token);
-          return true;
-        } catch (_) {
-          return false;
-        }
-      },
-    ),
-  );
 
   sl.registerSingleton<AuthBloc>(AuthBloc(authRepository));
 }

apps/lib/core/form_inputs/form_inputs.dart

@@ -0,0 +1,52 @@
+import 'package:formz/formz.dart';
+
+class Username extends FormzInput<String, String> {
+  const Username.pure() : super.pure('');
+  const Username.dirty([super.value = '']) : super.dirty();
+
+  @override
+  String? validator(String value) {
+    if (value.isEmpty) return '请输入用户名';
+    if (value.length < 3) return '用户名至少 3 个字符';
+    if (value.length > 30) return '用户名最多 30 个字符';
+    return null;
+  }
+}
+
+class Email extends FormzInput<String, String> {
+  const Email.pure() : super.pure('');
+  const Email.dirty([super.value = '']) : super.dirty();
+
+  static final _regex = RegExp(r'^[\w.-]+@[\w.-]+\.\w+$');
+
+  @override
+  String? validator(String value) {
+    if (value.isEmpty) return '请输入邮箱';
+    if (!_regex.hasMatch(value)) return '邮箱格式不正确';
+    return null;
+  }
+}
+
+class Password extends FormzInput<String, String> {
+  const Password.pure() : super.pure('');
+  const Password.dirty([super.value = '']) : super.dirty();
+
+  @override
+  String? validator(String value) {
+    if (value.isEmpty) return '请输入密码';
+    if (value.length < 6) return '密码至少 6 个字符';
+    return null;
+  }
+}
+
+class VerificationCode extends FormzInput<String, String> {
+  const VerificationCode.pure() : super.pure('');
+  const VerificationCode.dirty([super.value = '']) : super.dirty();
+
+  @override
+  String? validator(String value) {
+    if (value.isEmpty) return '请输入验证码';
+    if (!RegExp(r'^\d{6}$').hasMatch(value)) return '验证码必须是 6 位数字';
+    return null;
+  }
+}

apps/lib/core/router/app_router.dart

@@ -2,11 +2,9 @@ import 'package:go_router/go_router.dart';
 import '../../features/auth/presentation/bloc/auth_bloc.dart';
 import '../../features/auth/presentation/bloc/auth_state.dart';
 import 'go_router_refresh_stream.dart';
-import '../../features/auth/ui/screens/login_email_screen.dart';
+import '../../features/auth/ui/screens/login_screen.dart';
-import '../../features/auth/ui/screens/login_password_screen.dart';
-import '../../features/auth/ui/screens/login_code_screen.dart';
 import '../../features/auth/ui/screens/register_screen.dart';
-import '../../features/auth/ui/screens/register_step2_screen.dart';
+import '../../features/auth/ui/screens/register_verification_screen.dart';
 import '../../features/home/ui/screens/home_screen.dart';
 import '../../features/messages/ui/screens/message_invite_list_screen.dart';
 import '../../features/messages/ui/screens/message_invite_detail_screen.dart';
@@ -60,22 +58,14 @@ GoRouter createAppRouter(AuthBloc authBloc) {
       return null;
     },
     routes: [
-      GoRoute(path: '/', builder: (context, state) => const LoginEmailScreen()),
+      GoRoute(path: '/', builder: (context, state) => const LoginScreen()),
-      GoRoute(
-        path: '/login/password',
-        builder: (context, state) => const LoginPasswordScreen(),
-      ),
-      GoRoute(
-        path: '/login/code',
-        builder: (context, state) => const LoginCodeScreen(),
-      ),
       GoRoute(
         path: '/register',
         builder: (context, state) => const RegisterScreen(),
       ),
       GoRoute(
-        path: '/register/step2',
+        path: '/register/verification',
-        builder: (context, state) => const RegisterStep2Screen(),
+        builder: (context, state) => const RegisterVerificationScreen(),
       ),
       GoRoute(path: '/home', builder: (context, state) => const HomeScreen()),
       GoRoute(

apps/lib/features/auth/data/auth_api.dart

@@ -5,7 +5,7 @@ import 'models/auth_response.dart';
 
 class AuthApi {
   final ApiClient _client;
-  static const _prefix = '/v1/auth';
+  static const _prefix = '/api/v1/auth';
 
   AuthApi(this._client);
 

apps/lib/features/auth/presentation/cubits/login_cubit.dart

@@ -1,10 +1,11 @@
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:formz/formz.dart';
 import 'package:equatable/equatable.dart';
+import '../../../../core/api/api_exception.dart';
 import '../../data/auth_repository.dart';
 import '../../data/models/login_request.dart';
 import '../../data/models/auth_response.dart';
-import 'register_cubit.dart' show Email, Password;
+import '../../../../core/form_inputs/form_inputs.dart';
 
 class LoginState extends Equatable {
   final Email email;
@@ -64,10 +65,11 @@ class LoginCubit extends Cubit<LoginState> {
       emit(state.copyWith(status: FormzSubmissionStatus.success));
       return response;
     } catch (e) {
+      final message = e is ApiException ? e.message : e.toString();
       emit(
         state.copyWith(
           status: FormzSubmissionStatus.failure,
-          errorMessage: e.toString(),
+          errorMessage: message,
         ),
       );
       return null;

apps/lib/features/auth/presentation/cubits/register_cubit.dart

@@ -1,61 +1,12 @@
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:formz/formz.dart';
 import 'package:equatable/equatable.dart';
+import '../../../../core/api/api_exception.dart';
+import '../../../../core/form_inputs/form_inputs.dart';
 import '../../data/auth_repository.dart';
 import '../../data/models/signup_request.dart';
 import '../../data/models/auth_response.dart';
 
-class Username extends FormzInput<String, String> {
-  const Username.pure() : super.pure('');
-  const Username.dirty([super.value = '']) : super.dirty();
-
-  @override
-  String? validator(String value) {
-    if (value.isEmpty) return 'Username is required';
-    if (value.length < 3) return 'Username must be at least 3 characters';
-    if (value.length > 30) return 'Username must be at most 30 characters';
-    return null;
-  }
-}
-
-class Email extends FormzInput<String, String> {
-  const Email.pure() : super.pure('');
-  const Email.dirty([super.value = '']) : super.dirty();
-
-  static final _regex = RegExp(r'^[\w.-]+@[\w.-]+\.\w+$');
-
-  @override
-  String? validator(String value) {
-    if (value.isEmpty) return 'Email is required';
-    if (!_regex.hasMatch(value)) return 'Invalid email format';
-    return null;
-  }
-}
-
-class Password extends FormzInput<String, String> {
-  const Password.pure() : super.pure('');
-  const Password.dirty([super.value = '']) : super.dirty();
-
-  @override
-  String? validator(String value) {
-    if (value.isEmpty) return 'Password is required';
-    if (value.length < 6) return 'Password must be at least 6 characters';
-    return null;
-  }
-}
-
-class VerificationCode extends FormzInput<String, String> {
-  const VerificationCode.pure() : super.pure('');
-  const VerificationCode.dirty([super.value = '']) : super.dirty();
-
-  @override
-  String? validator(String value) {
-    if (value.isEmpty) return 'Code is required';
-    if (!RegExp(r'^\d{6}$').hasMatch(value)) return 'Code must be 6 digits';
-    return null;
-  }
-}
-
 class RegisterState extends Equatable {
   final Username username;
   final Email email;
@@ -159,10 +110,11 @@ class RegisterCubit extends Cubit<RegisterState> {
       );
       return true;
     } catch (e) {
+      final message = e is ApiException ? e.message : e.toString();
       emit(
         state.copyWith(
           status: FormzSubmissionStatus.failure,
-          errorMessage: e.toString(),
+          errorMessage: message,
         ),
       );
       return false;
@@ -184,10 +136,11 @@ class RegisterCubit extends Cubit<RegisterState> {
       emit(state.copyWith(status: FormzSubmissionStatus.success));
       return response;
     } catch (e) {
+      final message = e is ApiException ? e.message : e.toString();
       emit(
         state.copyWith(
           status: FormzSubmissionStatus.failure,
-          errorMessage: e.toString(),
+          errorMessage: message,
         ),
       );
       return null;
@@ -203,7 +156,8 @@ class RegisterCubit extends Cubit<RegisterState> {
       );
       emit(state.copyWith(codeSent: true));
     } catch (e) {
-      emit(state.copyWith(errorMessage: e.toString()));
+      final message = e is ApiException ? e.message : e.toString();
+      emit(state.copyWith(errorMessage: message));
     }
   }
 }

apps/lib/features/auth/ui/screens/login_code_screen.dart

@@ -1,182 +0,0 @@
-import 'package:flutter/material.dart';
-import 'package:go_router/go_router.dart';
-import '../../../../core/theme/design_tokens.dart';
-import '../../../../shared/widgets/app_button.dart';
-
-class LoginCodeScreen extends StatefulWidget {
-  const LoginCodeScreen({super.key});
-
-  @override
-  State<LoginCodeScreen> createState() => _LoginCodeScreenState();
-}
-
-class _LoginCodeScreenState extends State<LoginCodeScreen> {
-  final _codeController = TextEditingController();
-
-  @override
-  void dispose() {
-    _codeController.dispose();
-    super.dispose();
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return Scaffold(
-      backgroundColor: AppColors.background,
-      body: SafeArea(
-        child: Padding(
-          padding: const EdgeInsets.symmetric(horizontal: 24),
-          child: Column(
-            crossAxisAlignment: CrossAxisAlignment.center,
-            children: [
-              Expanded(
-                child: Center(
-                  child: Column(
-                    mainAxisSize: MainAxisSize.min,
-                    crossAxisAlignment: CrossAxisAlignment.center,
-                    children: [
-                      _buildAppIcon(),
-                      const SizedBox(height: 24),
-                      _buildAppTitle(),
-                      const SizedBox(height: 32),
-                      _buildFormContainer(),
-                    ],
-                  ),
-                ),
-              ),
-              _buildFooter(),
-              const SizedBox(height: 24),
-            ],
-          ),
-        ),
-      ),
-    );
-  }
-
-  Widget _buildAppIcon() {
-    return Container(
-      width: 104,
-      height: 104,
-      decoration: BoxDecoration(
-        color: AppColors.appIconRing,
-        borderRadius: BorderRadius.circular(52),
-        border: Border.all(color: AppColors.appIconBorder, width: 1),
-      ),
-      child: Center(
-        child: ClipRRect(
-          borderRadius: BorderRadius.circular(38),
-          child: Image.asset(
-            'assets/images/logo.png',
-            width: 76,
-            height: 76,
-            fit: BoxFit.cover,
-          ),
-        ),
-      ),
-    );
-  }
-
-  Widget _buildAppTitle() {
-    return const Text(
-      'linksy',
-      style: TextStyle(
-        fontFamily: 'Playfair Display',
-        fontSize: 34,
-        fontWeight: FontWeight.w700,
-        fontStyle: FontStyle.italic,
-        color: AppColors.appTitle,
-        letterSpacing: 0.5,
-      ),
-    );
-  }
-
-  Widget _buildFormContainer() {
-    return SizedBox(
-      width: 327,
-      child: Column(
-        crossAxisAlignment: CrossAxisAlignment.stretch,
-        children: [
-          Column(
-            crossAxisAlignment: CrossAxisAlignment.start,
-            children: [
-              const Text(
-                '邮箱验证码',
-                style: TextStyle(
-                  fontSize: 13,
-                  fontWeight: FontWeight.w500,
-                  color: Color(0xFF475569),
-                ),
-              ),
-              const SizedBox(height: 6),
-              Row(
-                children: [
-                  Expanded(
-                    child: SizedBox(
-                      height: 40,
-                      child: TextField(
-                        controller: _codeController,
-                        keyboardType: TextInputType.number,
-                        decoration: const InputDecoration(
-                          hintText: '输入验证码',
-                          contentPadding: EdgeInsets.symmetric(
-                            horizontal: 12,
-                            vertical: 10,
-                          ),
-                        ),
-                      ),
-                    ),
-                  ),
-                  const SizedBox(width: 8),
-                  SizedBox(
-                    width: 112,
-                    height: 40,
-                    child: OutlinedButton(
-                      onPressed: () {},
-                      style: OutlinedButton.styleFrom(
-                        backgroundColor: AppColors.background,
-                        side: const BorderSide(color: AppColors.input),
-                        shape: RoundedRectangleBorder(
-                          borderRadius: BorderRadius.circular(6),
-                        ),
-                      ),
-                      child: const Text(
-                        '发送验证码',
-                        style: TextStyle(
-                          fontSize: 13,
-                          fontWeight: FontWeight.w500,
-                          color: AppColors.slate500,
-                        ),
-                      ),
-                    ),
-                  ),
-                ],
-              ),
-            ],
-          ),
-          const SizedBox(height: 12),
-          AppButton(text: '登录', onPressed: () {}),
-          const SizedBox(height: 12),
-          AppButton(
-            text: '使用密码登录',
-            isOutlined: true,
-            onPressed: () => context.pop(),
-          ),
-        ],
-      ),
-    );
-  }
-
-  Widget _buildFooter() {
-    return GestureDetector(
-      onTap: () => context.push('/register'),
-      child: const Text(
-        '还没有账号？去注册',
-        style: TextStyle(
-          fontSize: 14,
-          fontWeight: FontWeight.w500,
-          color: AppColors.slate500,
-        ),
-      ),
-    );
-  }
-}

apps/lib/features/auth/ui/screens/login_email_screen.dart

@@ -1,170 +0,0 @@
-import 'package:flutter/material.dart';
-import 'package:go_router/go_router.dart';
-import '../../../../core/theme/design_tokens.dart';
-import '../../../../shared/widgets/app_button.dart';
-import '../../../../shared/widgets/warning_banner.dart';
-import '../../../../shared/utils/validators.dart';
-
-class LoginEmailScreen extends StatefulWidget {
-  const LoginEmailScreen({super.key});
-
-  @override
-  State<LoginEmailScreen> createState() => _LoginEmailScreenState();
-}
-
-class _LoginEmailScreenState extends State<LoginEmailScreen> {
-  final _emailController = TextEditingController();
-  bool _showWarning = false;
-  String _warningMessage = '';
-
-  @override
-  void dispose() {
-    _emailController.dispose();
-    super.dispose();
-  }
-
-  void _handleContinue() {
-    final error = Validators.email(_emailController.text);
-    if (error != null) {
-      setState(() {
-        _showWarning = true;
-        _warningMessage = error;
-      });
-      return;
-    }
-    setState(() {
-      _showWarning = false;
-    });
-    context.push('/login/password', extra: _emailController.text);
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return Scaffold(
-      backgroundColor: AppColors.background,
-      body: SafeArea(
-        child: Padding(
-          padding: const EdgeInsets.symmetric(horizontal: 24),
-          child: Column(
-            crossAxisAlignment: CrossAxisAlignment.center,
-            children: [
-              Expanded(
-                child: Center(
-                  child: Column(
-                    mainAxisSize: MainAxisSize.min,
-                    crossAxisAlignment: CrossAxisAlignment.center,
-                    children: [
-                      _buildAppIcon(),
-                      const SizedBox(height: 24),
-                      _buildAppTitle(),
-                      const SizedBox(height: 32),
-                      _buildFormContainer(),
-                    ],
-                  ),
-                ),
-              ),
-              _buildFooter(),
-              const SizedBox(height: 24),
-            ],
-          ),
-        ),
-      ),
-    );
-  }
-
-  Widget _buildAppIcon() {
-    return Container(
-      width: 104,
-      height: 104,
-      decoration: BoxDecoration(
-        color: AppColors.appIconRing,
-        borderRadius: BorderRadius.circular(52),
-        border: Border.all(color: AppColors.appIconBorder, width: 1),
-      ),
-      child: Center(
-        child: ClipRRect(
-          borderRadius: BorderRadius.circular(38),
-          child: Image.asset(
-            'assets/images/logo.png',
-            width: 76,
-            height: 76,
-            fit: BoxFit.cover,
-          ),
-        ),
-      ),
-    );
-  }
-
-  Widget _buildAppTitle() {
-    return const Text(
-      'linksy',
-      style: TextStyle(
-        fontFamily: 'Playfair Display',
-        fontSize: 34,
-        fontWeight: FontWeight.w700,
-        fontStyle: FontStyle.italic,
-        color: AppColors.appTitle,
-        letterSpacing: 0.5,
-      ),
-    );
-  }
-
-  Widget _buildFormContainer() {
-    return SizedBox(
-      width: 327,
-      child: Column(
-        crossAxisAlignment: CrossAxisAlignment.stretch,
-        children: [
-          Column(
-            crossAxisAlignment: CrossAxisAlignment.start,
-            children: [
-              const Text(
-                '邮箱',
-                style: TextStyle(
-                  fontSize: 14,
-                  fontWeight: FontWeight.w500,
-                  color: AppColors.foreground,
-                ),
-              ),
-              const SizedBox(height: 6),
-              TextField(
-                controller: _emailController,
-                keyboardType: TextInputType.emailAddress,
-                decoration: const InputDecoration(hintText: '请输入邮箱'),
-              ),
-            ],
-          ),
-          const SizedBox(height: 12),
-          WarningBanner(message: _warningMessage, visible: _showWarning),
-          const SizedBox(height: 16),
-          AppButton(text: '继续', onPressed: _handleContinue),
-        ],
-      ),
-    );
-  }
-
-  Widget _buildFooter() {
-    return Column(
-      mainAxisAlignment: MainAxisAlignment.center,
-      crossAxisAlignment: CrossAxisAlignment.center,
-      children: [
-        GestureDetector(
-          onTap: () => context.push('/register'),
-          child: const Text(
-            '还没有账号？去注册',
-            style: TextStyle(
-              fontSize: 14,
-              fontWeight: FontWeight.w500,
-              color: AppColors.slate500,
-            ),
-          ),
-        ),
-        const SizedBox(height: 12),
-        const Text(
-          '隐私政策 | 服务条款',
-          style: TextStyle(fontSize: 12, color: AppColors.slate400),
-        ),
-      ],
-    );
-  }
-}

apps/lib/features/auth/ui/screens/login_screen.dart

@@ -3,68 +3,52 @@ import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:formz/formz.dart';
 import 'package:go_router/go_router.dart';
 import '../../../../core/theme/design_tokens.dart';
+import '../../../../core/di/injection.dart';
 import '../../../../shared/widgets/app_button.dart';
-import '../../../../shared/widgets/warning_banner.dart';
+import '../../../../shared/widgets/banner/app_banner.dart';
+import '../../../../shared/widgets/toast/toast_type.dart';
 import '../../presentation/cubits/login_cubit.dart';
 import '../../presentation/bloc/auth_bloc.dart';
 import '../../presentation/bloc/auth_event.dart';
 import '../../data/auth_repository.dart';
 
-class LoginPasswordScreen extends StatelessWidget {
+class LoginScreen extends StatelessWidget {
-  final String? email;
+  const LoginScreen({super.key});
-
-  const LoginPasswordScreen({super.key, this.email});
 
   @override
   Widget build(BuildContext context) {
-    final emailFromExtra = GoRouterState.of(context).extra as String?;
-    final initialEmail = email ?? emailFromExtra ?? '';
-
     return BlocProvider(
-      create: (context) {
+      create: (context) => LoginCubit(sl<AuthRepository>()),
-        final cubit = LoginCubit(context.read<AuthRepository>());
+      child: const LoginView(),
-        if (initialEmail.isNotEmpty) {
-          cubit.emailChanged(initialEmail);
-        }
-        return cubit;
-      },
-      child: LoginPasswordView(initialEmail: initialEmail),
     );
   }
 }
 
-class LoginPasswordView extends StatefulWidget {
+class LoginView extends StatefulWidget {
-  final String initialEmail;
+  const LoginView({super.key});
-
-  const LoginPasswordView({super.key, required this.initialEmail});
 
   @override
-  State<LoginPasswordView> createState() => _LoginPasswordViewState();
+  State<LoginView> createState() => _LoginViewState();
 }
 
-class _LoginPasswordViewState extends State<LoginPasswordView> {
+class _LoginViewState extends State<LoginView> {
-  late final TextEditingController _passwordController;
+  final _emailController = TextEditingController();
-  bool _obscureText = true;
+  final _passwordController = TextEditingController();
-
+  bool _obscurePassword = true;
-  @override
-  void initState() {
-    super.initState();
-    _passwordController = TextEditingController();
-  }
 
   @override
   void dispose() {
+    _emailController.dispose();
     _passwordController.dispose();
     super.dispose();
   }
 
   Future<void> _handleLogin() async {
     final cubit = context.read<LoginCubit>();
+    cubit.emailChanged(_emailController.text);
     cubit.passwordChanged(_passwordController.text);
 
-    if (!cubit.state.isValid) {
+    if (!cubit.state.isValid) return;
-      return;
-    }
 
     final response = await cubit.submit();
     if (response != null && mounted) {
@@ -84,6 +68,7 @@ class _LoginPasswordViewState extends State<LoginPasswordView> {
             crossAxisAlignment: CrossAxisAlignment.center,
             children: [
               Expanded(
+                key: const Key('login_main_content'),
                 child: Center(
                   child: Column(
                     mainAxisSize: MainAxisSize.min,
@@ -98,7 +83,7 @@ class _LoginPasswordViewState extends State<LoginPasswordView> {
                   ),
                 ),
               ),
-              _buildFooter(),
+              Container(key: const Key('login_footer'), child: _buildFooter()),
               const SizedBox(height: 24),
             ],
           ),
@@ -147,49 +132,29 @@ class _LoginPasswordViewState extends State<LoginPasswordView> {
   Widget _buildFormContainer() {
     return BlocBuilder<LoginCubit, LoginState>(
       builder: (context, state) {
+        final fieldError = state.email.displayError != null
+            ? state.email.error
+            : state.password.displayError != null
+            ? state.password.error
+            : null;
         return SizedBox(
           width: 327,
           child: Column(
             crossAxisAlignment: CrossAxisAlignment.stretch,
             children: [
-              Column(
+              _buildInput(
-                crossAxisAlignment: CrossAxisAlignment.start,
+                label: '邮箱',
-                children: [
+                hint: '请输入邮箱',
-                  const Text(
+                controller: _emailController,
-                    '密码',
+                hasError: state.email.displayError != null,
-                    style: TextStyle(
-                      fontSize: 13,
-                      fontWeight: FontWeight.w500,
-                      color: Color(0xFF475569),
-                    ),
-                  ),
-                  const SizedBox(height: 6),
-                  TextField(
-                    controller: _passwordController,
-                    obscureText: _obscureText,
-                    decoration: InputDecoration(
-                      hintText: '请输入密码',
-                      suffixIcon: IconButton(
-                        icon: Icon(
-                          _obscureText
-                              ? Icons.visibility_off
-                              : Icons.visibility,
-                          size: 20,
-                          color: AppColors.slate400,
-                        ),
-                        onPressed: () {
-                          setState(() {
-                            _obscureText = !_obscureText;
-                          });
-                        },
-                      ),
-                    ),
-                  ),
-                ],
               ),
               const SizedBox(height: 12),
+              _buildPasswordInput(state.password.displayError != null),
+              const SizedBox(height: 12),
               if (state.errorMessage != null)
-                WarningBanner(message: state.errorMessage!, visible: true),
+                AppBanner(message: state.errorMessage!, type: ToastType.error)
+              else if (fieldError != null)
+                AppBanner(message: fieldError, type: ToastType.warning),
               const SizedBox(height: 12),
               AppButton(
                 text: '登录',
@@ -204,6 +169,73 @@ class _LoginPasswordViewState extends State<LoginPasswordView> {
     );
   }
 
+  Widget _buildInput({
+    required String label,
+    required String hint,
+    required TextEditingController controller,
+    bool hasError = false,
+  }) {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        Text(
+          label,
+          style: const TextStyle(
+            fontSize: 13,
+            fontWeight: FontWeight.w500,
+            color: AppColors.slate600,
+          ),
+        ),
+        const SizedBox(height: 6),
+        TextField(
+          controller: controller,
+          keyboardType: TextInputType.emailAddress,
+          decoration: InputDecoration(
+            hintText: hint,
+            errorText: hasError ? ' ' : null,
+          ),
+        ),
+      ],
+    );
+  }
+
+  Widget _buildPasswordInput(bool hasError) {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        const Text(
+          '密码',
+          style: TextStyle(
+            fontSize: 13,
+            fontWeight: FontWeight.w500,
+            color: AppColors.slate600,
+          ),
+        ),
+        const SizedBox(height: 6),
+        TextField(
+          controller: _passwordController,
+          obscureText: _obscurePassword,
+          decoration: InputDecoration(
+            hintText: '请输入密码',
+            errorText: hasError ? ' ' : null,
+            suffixIcon: IconButton(
+              icon: Icon(
+                _obscurePassword ? Icons.visibility_off : Icons.visibility,
+                size: 20,
+                color: AppColors.slate400,
+              ),
+              onPressed: () {
+                setState(() {
+                  _obscurePassword = !_obscurePassword;
+                });
+              },
+            ),
+          ),
+        ),
+      ],
+    );
+  }
+
   Widget _buildFooter() {
     return GestureDetector(
       onTap: () => context.push('/register'),

apps/lib/features/auth/ui/screens/register_screen.dart

@@ -3,8 +3,10 @@ import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:formz/formz.dart';
 import 'package:go_router/go_router.dart';
 import '../../../../core/theme/design_tokens.dart';
+import '../../../../core/di/injection.dart';
 import '../../../../shared/widgets/app_button.dart';
-import '../../../../shared/widgets/warning_banner.dart';
+import '../../../../shared/widgets/banner/app_banner.dart';
+import '../../../../shared/widgets/toast/toast_type.dart';
 import '../../presentation/cubits/register_cubit.dart';
 import '../../data/auth_repository.dart';
 
@@ -14,7 +16,7 @@ class RegisterScreen extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return BlocProvider(
-      create: (context) => RegisterCubit(context.read<AuthRepository>()),
+      create: (context) => RegisterCubit(sl<AuthRepository>()),
       child: const RegisterView(),
     );
   }
@@ -53,7 +55,7 @@ class _RegisterViewState extends State<RegisterView> {
 
     final success = await cubit.submitStep1();
     if (success && mounted) {
-      context.push('/register/step2', extra: cubit);
+      context.push('/register/verification', extra: cubit);
     }
   }
 
@@ -146,9 +148,9 @@ class _RegisterViewState extends State<RegisterView> {
               if (state.errorMessage != null)
                 Padding(
                   padding: const EdgeInsets.only(top: 8),
-                  child: WarningBanner(
+                  child: AppBanner(
                     message: state.errorMessage!,
-                    visible: true,
+                    type: ToastType.error,
                   ),
                 ),
               const SizedBox(height: 12),

apps/lib/features/auth/ui/screens/register_verification_screen.dart

@@ -4,15 +4,16 @@ import 'package:go_router/go_router.dart';
 import 'package:formz/formz.dart';
 import '../../../../core/theme/design_tokens.dart';
 import '../../../../shared/widgets/app_button.dart';
-import '../../../../shared/widgets/warning_banner.dart';
+import '../../../../shared/widgets/banner/app_banner.dart';
+import '../../../../shared/widgets/toast/toast_type.dart';
 import '../../presentation/cubits/register_cubit.dart';
 import '../../presentation/bloc/auth_bloc.dart';
 import '../../presentation/bloc/auth_event.dart';
 
-class RegisterStep2Screen extends StatelessWidget {
+class RegisterVerificationScreen extends StatelessWidget {
   final RegisterCubit? cubit;
 
-  const RegisterStep2Screen({super.key, this.cubit});
+  const RegisterVerificationScreen({super.key, this.cubit});
 
   @override
   Widget build(BuildContext context) {
@@ -27,26 +28,25 @@ class RegisterStep2Screen extends StatelessWidget {
 
     return BlocProvider.value(
       value: registerCubit,
-      child: const RegisterStep2View(),
+      child: const RegisterVerificationView(),
     );
   }
 }
 
-class RegisterStep2View extends StatefulWidget {
+class RegisterVerificationView extends StatefulWidget {
-  const RegisterStep2View({super.key});
+  const RegisterVerificationView({super.key});
 
   @override
-  State<RegisterStep2View> createState() => _RegisterStep2ViewState();
+  State<RegisterVerificationView> createState() =>
+      _RegisterVerificationViewState();
 }
 
-class _RegisterStep2ViewState extends State<RegisterStep2View> {
+class _RegisterVerificationViewState extends State<RegisterVerificationView> {
   final _codeController = TextEditingController();
-  final _inviteController = TextEditingController();
 
   @override
   void dispose() {
     _codeController.dispose();
-    _inviteController.dispose();
     super.dispose();
   }
 
@@ -150,15 +150,13 @@ class _RegisterStep2ViewState extends State<RegisterStep2View> {
             children: [
               _buildCodeInput(state),
               const SizedBox(height: 12),
-              _buildInviteInput(),
-              const SizedBox(height: 12),
               _buildStepIndicator(),
               if (state.errorMessage != null)
                 Padding(
                   padding: const EdgeInsets.only(top: 8),
-                  child: WarningBanner(
+                  child: AppBanner(
                     message: state.errorMessage!,
-                    visible: true,
+                    type: ToastType.error,
                   ),
                 ),
               const SizedBox(height: 12),
@@ -237,27 +235,6 @@ class _RegisterStep2ViewState extends State<RegisterStep2View> {
     );
   }
 
-  Widget _buildInviteInput() {
-    return Column(
-      crossAxisAlignment: CrossAxisAlignment.start,
-      children: [
-        const Text(
-          '邀请码（可选）',
-          style: TextStyle(
-            fontSize: 13,
-            fontWeight: FontWeight.w500,
-            color: Color(0xFF475569),
-          ),
-        ),
-        const SizedBox(height: 6),
-        TextField(
-          controller: _inviteController,
-          decoration: const InputDecoration(hintText: '有邀请码可填写'),
-        ),
-      ],
-    );
-  }
-
   Widget _buildStepIndicator() {
     return Row(
       children: [

apps/lib/features/contacts/ui/screens/add_contact_screen.dart

@@ -147,7 +147,6 @@ class _AddContactScreenState extends State<AddContactScreen> {
   void _handleConfirm() {
     final name = _nameController.text.trim();
     final email = _emailController.text.trim();
-    final remark = _remarkController.text.trim();
 
     if (name.isEmpty || email.isEmpty) {
       ScaffoldMessenger.of(

apps/lib/shared/widgets/app_button.dart

@@ -4,7 +4,6 @@ import '../../core/theme/design_tokens.dart';
 class AppButton extends StatelessWidget {
   final String text;
   final VoidCallback? onPressed;
-  final bool isPrimary;
   final bool isOutlined;
   final double height;
   final bool isLoading;
@@ -13,7 +12,6 @@ class AppButton extends StatelessWidget {
     super.key,
     required this.text,
     this.onPressed,
-    this.isPrimary = true,
     this.isOutlined = false,
     this.height = 44,
     this.isLoading = false,

apps/lib/shared/widgets/banner/app_banner.dart

@@ -1,38 +1,41 @@
 import 'package:flutter/material.dart';
-import '../../core/theme/design_tokens.dart';
+import '../../../core/theme/design_tokens.dart';
+import '../toast/toast_type.dart';
+import '../toast/toast_type_config.dart' show ToastTypeConfig;
 
-class WarningBanner extends StatelessWidget {
+class AppBanner extends StatelessWidget {
   final String message;
+  final ToastType type;
   final bool visible;
 
-  const WarningBanner({super.key, required this.message, this.visible = true});
+  const AppBanner({
+    super.key,
+    required this.message,
+    this.type = ToastType.warning,
+    this.visible = true,
+  });
 
   @override
   Widget build(BuildContext context) {
     if (!visible) return const SizedBox.shrink();
 
+    final config = ToastTypeConfig.fromType(type);
+
     return Container(
       width: double.infinity,
       padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 10),
       decoration: BoxDecoration(
-        color: AppColors.warningBackground,
+        color: config.backgroundColor,
         borderRadius: BorderRadius.circular(AppRadius.sm),
       ),
       child: Row(
         children: [
-          const Icon(
+          Icon(config.icon, size: 16, color: config.iconColor),
-            Icons.warning_amber_rounded,
-            size: 16,
-            color: AppColors.warningText,
-          ),
           const SizedBox(width: 8),
           Expanded(
             child: Text(
               message,
-              style: const TextStyle(
+              style: TextStyle(fontSize: 13, color: config.textColor),
-                fontSize: 13,
-                color: AppColors.warningText,
-              ),
             ),
           ),
         ],

apps/lib/shared/widgets/toast/index.dart

@@ -0,0 +1,3 @@
+export 'toast.dart';
+export 'toast_type.dart';
+export 'toast_type_config.dart';

apps/lib/shared/widgets/toast/toast.dart

@@ -0,0 +1,128 @@
+import 'package:flutter/material.dart';
+import '../../../core/theme/design_tokens.dart';
+import 'toast_type.dart';
+import 'toast_type_config.dart';
+
+class Toast {
+  static void show(
+    BuildContext context,
+    String message, {
+    ToastType type = ToastType.info,
+    Duration duration = const Duration(seconds: 2),
+  }) {
+    final overlay = Overlay.of(context);
+    late OverlayEntry entry;
+
+    entry = OverlayEntry(
+      builder: (context) => _ToastWidget(
+        message: message,
+        type: type,
+        duration: duration,
+        onDismiss: () => entry.remove(),
+      ),
+    );
+
+    overlay.insert(entry);
+  }
+}
+
+class _ToastWidget extends StatefulWidget {
+  final String message;
+  final ToastType type;
+  final Duration duration;
+  final VoidCallback onDismiss;
+
+  const _ToastWidget({
+    required this.message,
+    required this.type,
+    required this.duration,
+    required this.onDismiss,
+  });
+
+  @override
+  State<_ToastWidget> createState() => _ToastWidgetState();
+}
+
+class _ToastWidgetState extends State<_ToastWidget>
+    with SingleTickerProviderStateMixin {
+  late AnimationController _controller;
+  late Animation<Offset> _slideAnimation;
+  late Animation<double> _fadeAnimation;
+
+  @override
+  void initState() {
+    super.initState();
+    _controller = AnimationController(
+      duration: const Duration(milliseconds: 250),
+      vsync: this,
+    );
+
+    _slideAnimation = Tween<Offset>(
+      begin: const Offset(0, -1),
+      end: Offset.zero,
+    ).animate(CurvedAnimation(parent: _controller, curve: Curves.easeOut));
+
+    _fadeAnimation = Tween<double>(begin: 0, end: 1).animate(_controller);
+
+    _controller.forward();
+
+    Future.delayed(widget.duration, _dismiss);
+  }
+
+  void _dismiss() {
+    if (!mounted) return;
+    _controller.reverse().then((_) => widget.onDismiss());
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final config = ToastTypeConfig.fromType(widget.type);
+
+    return Positioned(
+      top: MediaQuery.of(context).padding.top + 16,
+      left: 16,
+      right: 16,
+      child: SlideTransition(
+        position: _slideAnimation,
+        child: FadeTransition(
+          opacity: _fadeAnimation,
+          child: Material(
+            color: Colors.transparent,
+            child: Container(
+              padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
+              decoration: BoxDecoration(
+                color: config.backgroundColor,
+                borderRadius: BorderRadius.circular(AppRadius.md),
+                boxShadow: [
+                  BoxShadow(
+                    color: Colors.black.withValues(alpha: 0.1),
+                    blurRadius: 8,
+                    offset: const Offset(0, 2),
+                  ),
+                ],
+              ),
+              child: Row(
+                children: [
+                  Icon(config.icon, size: 20, color: config.iconColor),
+                  const SizedBox(width: 12),
+                  Expanded(
+                    child: Text(
+                      widget.message,
+                      style: TextStyle(fontSize: 14, color: config.textColor),
+                    ),
+                  ),
+                ],
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}

apps/lib/shared/widgets/toast/toast_type.dart

@@ -0,0 +1 @@
+enum ToastType { info, success, warning, error }

apps/lib/shared/widgets/toast/toast_type_config.dart

@@ -0,0 +1,43 @@
+import 'package:flutter/material.dart';
+import 'toast_type.dart';
+
+class ToastTypeConfig {
+  final Color backgroundColor;
+  final Color iconColor;
+  final Color textColor;
+  final IconData icon;
+
+  const ToastTypeConfig({
+    required this.backgroundColor,
+    required this.iconColor,
+    required this.textColor,
+    required this.icon,
+  });
+
+  static ToastTypeConfig fromType(ToastType type) => switch (type) {
+    ToastType.success => const ToastTypeConfig(
+      backgroundColor: Color(0xFFECFDF5),
+      iconColor: Color(0xFF10B981),
+      textColor: Color(0xFF065F46),
+      icon: Icons.check_circle_outline,
+    ),
+    ToastType.warning => const ToastTypeConfig(
+      backgroundColor: Color(0xFFFFFBEB),
+      iconColor: Color(0xFFF59E0B),
+      textColor: Color(0xFF92400E),
+      icon: Icons.warning_amber_rounded,
+    ),
+    ToastType.error => const ToastTypeConfig(
+      backgroundColor: Color(0xFFFEF2F2),
+      iconColor: Color(0xFFEF4444),
+      textColor: Color(0xFF991B1B),
+      icon: Icons.error_outline,
+    ),
+    ToastType.info => const ToastTypeConfig(
+      backgroundColor: Color(0xFFEFF6FF),
+      iconColor: Color(0xFF3B82F6),
+      textColor: Color(0xFF1E40AF),
+      icon: Icons.info_outline,
+    ),
+  };
+}

apps/test/core/api/api_exception_test.dart

@@ -8,17 +8,12 @@ void main() {
       final apiException = ApiException.fromDioError(dioException);
 
       expect(apiException, isA<ApiException>());
-      expect(apiException.message, contains('Request failed'));
+      expect(apiException.message, contains('网络错误'));
-    });
-
-    test('NetworkException has correct message', () {
-      const exception = NetworkException('No internet');
-      expect(exception.message, 'No internet');
     });
 
     test('UnauthorizedException has default message', () {
       const exception = UnauthorizedException();
-      expect(exception.message, 'Authentication required');
+      expect(exception.message, '请重新登录');
     });
   });
 }

apps/test/widget_test.dart

@@ -4,9 +4,13 @@ import 'package:mocktail/mocktail.dart';
 import 'package:social_app/main.dart';
 import 'package:social_app/features/auth/presentation/bloc/auth_bloc.dart';
 import 'package:social_app/features/auth/presentation/bloc/auth_state.dart';
+import 'package:social_app/features/auth/data/auth_repository.dart';
+import 'package:social_app/core/di/injection.dart';
 
 class MockAuthBloc extends Mock implements AuthBloc {}
 
+class MockAuthRepository extends Mock implements AuthRepository {}
+
 class FakeAuthState extends Fake implements AuthState {}
 
 void main() {
@@ -14,6 +18,13 @@ void main() {
     registerFallbackValue(FakeAuthState());
   });
 
+  setUp(() async {
+    if (sl.isRegistered<AuthRepository>()) {
+      await sl.reset();
+    }
+    sl.registerSingleton<AuthRepository>(MockAuthRepository());
+  });
+
   testWidgets('Login screen loads correctly', (WidgetTester tester) async {
     final mockAuthBloc = MockAuthBloc();
     when(() => mockAuthBloc.state).thenReturn(AuthInitial());
@@ -23,7 +34,7 @@ void main() {
 
     await tester.pumpWidget(LinksyApp(authBloc: mockAuthBloc));
     expect(find.text('linksy'), findsOneWidget);
-    expect(find.text('继续'), findsOneWidget);
+    expect(find.text('登录'), findsOneWidget);
     expect(find.text('还没有账号？去注册'), findsOneWidget);
   });