新增修改密码界面/帮助中心界面/关于我们界面

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+    "cmake.ignoreCMakeListsMissing": true
+}

lib/main.dart

@@ -24,7 +24,7 @@ class MyApp extends StatelessWidget {
         ChangeNotifierProvider(create: (_) => di.sl<UserProvider>()),
       ],
       child: MaterialApp(
-        title: 'Flutter App',
+        title: '中了么',
         theme: ThemeData(
           primarySwatch: Colors.blue,
           // fontFamily: 'Roboto',

lib/presentation/providers/auth_provider.dart

@@ -76,6 +76,40 @@ class AuthProvider with ChangeNotifier {
     }
   }
   
+  Future<void> modifyPassword(String oldPassword, String newPassword) async {
+    _isLoading = true;
+    _error = null;
+    notifyListeners();
+    
+    try {
+      // 1. 调用API验证旧密码
+      // final isValidOldPassword = await authRepository.validatePassword(oldPassword);
+
+      // if (!isValidOldPassword) {
+      //   _error = '当前密码不正确';
+      //   return;
+      // }
+
+      // 2. 调用API更新密码
+      // final response = await authRepository.updatePassword(
+      //   LoginRequest(username: oldPassword, password: newPassword),
+      // );
+      
+      // if (response.success && response.data != null) {
+      //   // 可选：清除本地存储的token，让用户重新登录
+      //   // await _authService.logout();
+      //   _error = null;
+      // } else {
+      //   _error = response.message;
+      // }
+    } catch (e) {
+      _error = '密码修改失败: $e';
+    } finally {
+      _isLoading = false;
+      notifyListeners();
+    }
+  }
+  
   Future<void> logout() async {
     _isLoading = true;
     _error = null;

lib/presentation/screens/profile/profile_about_screen.dart

@@ -0,0 +1,715 @@
+import 'package:flutter/material.dart';
+import 'package:url_launcher/url_launcher.dart';
+import 'package:package_info_plus/package_info_plus.dart';
+
+class AboutUsScreen extends StatefulWidget {
+  const AboutUsScreen({super.key});
+
+  @override
+  State<AboutUsScreen> createState() => _AboutUsScreenState();
+}
+
+class _AboutUsScreenState extends State<AboutUsScreen> {
+  PackageInfo _packageInfo = PackageInfo(
+    appName: '未知',
+    packageName: '未知',
+    version: '未知',
+    buildNumber: '未知',
+    buildSignature: '未知',
+  );
+  bool _isLoading = false;
+
+  @override
+  void initState() {
+    super.initState();
+    // _initPackageInfo();
+  }
+
+  Future<void> _initPackageInfo() async {
+    final info = await PackageInfo.fromPlatform();
+    setState(() {
+      _packageInfo = info;
+      _isLoading = false;
+    });
+  }
+
+  Future<void> _launchURL(String url) async {
+    final Uri uri = Uri.parse(url);
+    if (await canLaunchUrl(uri)) {
+      await launchUrl(uri);
+    } else {
+      ScaffoldMessenger.of(context).showSnackBar(
+        const SnackBar(
+          content: Text('无法打开链接'),
+          backgroundColor: Colors.red,
+        ),
+      );
+    }
+  }
+
+  void _showVersionInfo() {
+    showDialog(
+      context: context,
+      builder: (context) => AlertDialog(
+        title: const Text('版本信息'),
+        content: Column(
+          mainAxisSize: MainAxisSize.min,
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            _buildInfoItem('应用名称', _packageInfo.appName),
+            _buildInfoItem('版本号', _packageInfo.version),
+            _buildInfoItem('构建号', _packageInfo.buildNumber),
+            _buildInfoItem('包名', _packageInfo.packageName),
+          ],
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.of(context).pop(),
+            child: const Text('确定'),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildInfoItem(String label, String value) {
+    return Padding(
+      padding: const EdgeInsets.symmetric(vertical: 6),
+      child: Row(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          SizedBox(
+            width: 80,
+            child: Text(
+              '$label：',
+              style: const TextStyle(
+                fontWeight: FontWeight.bold,
+                color: Colors.grey,
+              ),
+            ),
+          ),
+          Expanded(
+            child: Text(
+              value,
+              style: const TextStyle(color: Colors.black87),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('关于我们'),
+        centerTitle: true,
+      ),
+      body: _isLoading
+          ? const Center(child: CircularProgressIndicator())
+          : SingleChildScrollView(
+              child: Column(
+                children: [
+                  // 应用Logo和名称区域
+                  Container(
+                    padding: const EdgeInsets.symmetric(vertical: 40),
+                    decoration: BoxDecoration(
+                      gradient: LinearGradient(
+                        begin: Alignment.topCenter,
+                        end: Alignment.bottomCenter,
+                        colors: [
+                          Colors.red[50]!,
+                          Colors.orange[50]!,
+                        ],
+                      ),
+                    ),
+                    child: Column(
+                      children: [
+                        // 应用Logo
+                        Container(
+                          width: 120,
+                          height: 120,
+                          decoration: BoxDecoration(
+                            color: Colors.white,
+                            borderRadius: BorderRadius.circular(30),
+                            boxShadow: [
+                              BoxShadow(
+                                color: Colors.red.withOpacity(0.2),
+                                blurRadius: 20,
+                                offset: const Offset(0, 10),
+                              ),
+                            ],
+                          ),
+                          child: const Icon(
+                            Icons.emoji_events,
+                            size: 60,
+                            color: Colors.red,
+                          ),
+                        ),
+                        const SizedBox(height: 20),
+                        // 应用名称
+                        const Text(
+                          '中了么',
+                          style: TextStyle(
+                            fontSize: 32,
+                            fontWeight: FontWeight.bold,
+                            color: Colors.red,
+                          ),
+                        ),
+                        const SizedBox(height: 8),
+                        // 宣传语
+                        const Text(
+                          '专业彩票资讯，开启幸运之门',
+                          style: TextStyle(
+                            fontSize: 16,
+                            color: Colors.orange,
+                            fontStyle: FontStyle.italic,
+                          ),
+                        ),
+                        const SizedBox(height: 16),
+                        // 版本信息
+                        GestureDetector(
+                          onTap: _showVersionInfo,
+                          child: Container(
+                            padding: const EdgeInsets.symmetric(
+                              horizontal: 16,
+                              vertical: 6,
+                            ),
+                            decoration: BoxDecoration(
+                              color: Colors.white.withOpacity(0.8),
+                              borderRadius: BorderRadius.circular(20),
+                            ),
+                            child: Text(
+                              '版本 ${_packageInfo.version}',
+                              style: const TextStyle(
+                                color: Colors.red,
+                                fontWeight: FontWeight.w500,
+                              ),
+                            ),
+                          ),
+                        ),
+                      ],
+                    ),
+                  ),
+
+                  // 应用介绍卡片
+                  _buildSectionCard(
+                    title: '应用介绍',
+                    icon: Icons.info_outline,
+                    color: Colors.blue,
+                    child: const Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        Text(
+                          '「中了么」是一款专业的彩票资讯服务平台，致力于为用户提供全面、及时、准确的彩票信息。我们不是彩票销售平台，而是您获取彩票资讯、分析数据和社区交流的得力助手。',
+                          style: TextStyle(
+                            height: 1.6,
+                            color: Colors.black87,
+                          ),
+                        ),
+                        SizedBox(height: 12),
+                        Row(
+                          children: [
+                            Icon(Icons.check_circle, color: Colors.green, size: 16),
+                            SizedBox(width: 8),
+                            Expanded(child: Text('合法合规：严格遵守国家法律法规')),
+                          ],
+                        ),
+                        SizedBox(height: 6),
+                        Row(
+                          children: [
+                            Icon(Icons.check_circle, color: Colors.green, size: 16),
+                            SizedBox(width: 8),
+                            Expanded(child: Text('信息透明：所有数据公开可查')),
+                          ],
+                        ),
+                        SizedBox(height: 6),
+                        Row(
+                          children: [
+                            Icon(Icons.check_circle, color: Colors.green, size: 16),
+                            SizedBox(width: 8),
+                            Expanded(child: Text('理性推荐：倡导健康购彩理念')),
+                          ],
+                        ),
+                      ],
+                    ),
+                  ),
+
+                  // 核心功能
+                  _buildSectionCard(
+                    title: '核心功能',
+                    icon: Icons.stars,
+                    color: Colors.amber,
+                    child: Column(
+                      children: [
+                        _buildFeatureItem(
+                          icon: Icons.notifications_active,
+                          title: '开奖通知',
+                          description: '第一时间推送最新开奖结果',
+                          color: Colors.red,
+                        ),
+                        _buildFeatureItem(
+                          icon: Icons.analytics,
+                          title: '数据统计',
+                          description: '历史数据深度分析和趋势预测',
+                          color: Colors.blue,
+                        ),
+                        _buildFeatureItem(
+                          icon: Icons.article,
+                          title: '资讯快报',
+                          description: '行业动态和玩法技巧专业解读',
+                          color: Colors.green,
+                        ),
+                        _buildFeatureItem(
+                          icon: Icons.people,
+                          title: '彩民社区',
+                          description: '与千万彩民交流经验心得',
+                          color: Colors.purple,
+                        ),
+                        _buildFeatureItem(
+                          icon: Icons.security,
+                          title: '风险提示',
+                          description: '购彩风险提示和理性建议',
+                          color: Colors.orange,
+                        ),
+                      ],
+                    ),
+                  ),
+
+                  // 开发团队
+                  _buildSectionCard(
+                    title: '开发团队',
+                    icon: Icons.group,
+                    color: Colors.purple,
+                    child: Column(
+                      children: [
+                        _buildTeamMember(
+                          name: '技术团队',
+                          description: '来自一线互联网公司的技术专家，拥有丰富的移动开发经验',
+                          avatarColor: Colors.blue,
+                        ),
+                        _buildTeamMember(
+                          name: '数据分析团队',
+                          description: '统计学和数据分析专业人士，提供精准的数据支持',
+                          avatarColor: Colors.green,
+                        ),
+                        _buildTeamMember(
+                          name: '内容团队',
+                          description: '资深彩票行业编辑，确保资讯的专业性和时效性',
+                          avatarColor: Colors.orange,
+                        ),
+                        _buildTeamMember(
+                          name: '风控团队',
+                          description: '法律和风控专家，确保平台合规运营',
+                          avatarColor: Colors.red,
+                        ),
+                      ],
+                    ),
+                  ),
+
+                  // 联系我们
+                  _buildSectionCard(
+                    title: '联系我们',
+                    icon: Icons.contact_support,
+                    color: Colors.teal,
+                    child: Column(
+                      children: [
+                        _buildContactItem(
+                          icon: Icons.email,
+                          label: '商务合作',
+                          value: 'business@zhongleme.com',
+                          onTap: () => _launchURL('mailto:business@zhongleme.com'),
+                        ),
+                        _buildContactItem(
+                          icon: Icons.email,
+                          label: '用户反馈',
+                          value: 'feedback@zhongleme.com',
+                          onTap: () => _launchURL('mailto:feedback@zhongleme.com'),
+                        ),
+                        _buildContactItem(
+                          icon: Icons.phone,
+                          label: '客服热线',
+                          value: '400-888-8888',
+                          onTap: () => _launchURL('tel:4008888888'),
+                        ),
+                        _buildContactItem(
+                          icon: Icons.language,
+                          label: '官方网站',
+                          value: 'https://www.zhongleme.com',
+                          onTap: () => _launchURL('https://www.zhongleme.com'),
+                        ),
+                        const SizedBox(height: 16),
+                        const Text(
+                          '工作时间：周一至周五 9:00-18:00',
+                          style: TextStyle(
+                            color: Colors.grey,
+                            fontSize: 13,
+                          ),
+                        ),
+                      ],
+                    ),
+                  ),
+
+                  // 法律声明
+                  _buildSectionCard(
+                    title: '法律声明',
+                    icon: Icons.gavel,
+                    color: Colors.grey,
+                    child: const Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        Text(
+                          '1. 本应用提供的所有资讯仅供参考，不构成任何投注建议。',
+                          style: TextStyle(fontSize: 13, color: Colors.grey),
+                        ),
+                        SizedBox(height: 6),
+                        Text(
+                          '2. 彩票有风险，请理性购彩。未满18周岁不得购买彩票。',
+                          style: TextStyle(fontSize: 13, color: Colors.grey),
+                        ),
+                        SizedBox(height: 6),
+                        Text(
+                          '3. 我们严格遵守《互联网信息服务管理办法》等相关法律法规。',
+                          style: TextStyle(fontSize: 13, color: Colors.grey),
+                        ),
+                        SizedBox(height: 6),
+                        Text(
+                          '4. 用户在使用过程中应遵守当地法律法规，对自己的行为负责。',
+                          style: TextStyle(fontSize: 13, color: Colors.grey),
+                        ),
+                        SizedBox(height: 12),
+                        Center(
+                          child: Text(
+                            '© 2023 中了么 版权所有',
+                            style: TextStyle(
+                              fontSize: 12,
+                              color: Colors.grey,
+                              fontWeight: FontWeight.bold,
+                            ),
+                          ),
+                        ),
+                      ],
+                    ),
+                  ),
+
+                  // 社交平台
+                  Container(
+                    padding: const EdgeInsets.all(20),
+                    child: Column(
+                      children: [
+                        const Text(
+                          '关注我们',
+                          style: TextStyle(
+                            fontSize: 18,
+                            fontWeight: FontWeight.bold,
+                          ),
+                        ),
+                        const SizedBox(height: 16),
+                        Row(
+                          mainAxisAlignment: MainAxisAlignment.center,
+                          children: [
+                            _buildSocialButton(
+                              icon: Icons.wechat,
+                              label: '微信',
+                              onTap: () => _showWechatQRCode(context),
+                            ),
+                            _buildSocialButton(
+                              icon: Icons.camera_alt,
+                              label: '微博',
+                              onTap: () => _launchURL('https://weibo.com/zhongleme'),
+                            ),
+                            _buildSocialButton(
+                              icon: Icons.videocam,
+                              label: '抖音',
+                              onTap: () => _launchURL('https://www.douyin.com/zhongleme'),
+                            ),
+                          ],
+                        ),
+                      ],
+                    ),
+                  ),
+
+                  const SizedBox(height: 40),
+                ],
+              ),
+            ),
+    );
+  }
+
+  Widget _buildSectionCard({
+    required String title,
+    required IconData icon,
+    required Color color,
+    required Widget child,
+  }) {
+    return Container(
+      margin: const EdgeInsets.fromLTRB(16, 8, 16, 8),
+      padding: const EdgeInsets.all(20),
+      decoration: BoxDecoration(
+        color: Colors.white,
+        borderRadius: BorderRadius.circular(16),
+        boxShadow: [
+          BoxShadow(
+            color: Colors.grey.withOpacity(0.1),
+            blurRadius: 10,
+            offset: const Offset(0, 5),
+          ),
+        ],
+      ),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Row(
+            children: [
+              Container(
+                padding: const EdgeInsets.all(8),
+                decoration: BoxDecoration(
+                  color: color.withOpacity(0.1),
+                  borderRadius: BorderRadius.circular(10),
+                ),
+                child: Icon(icon, color: color, size: 24),
+              ),
+              const SizedBox(width: 12),
+              Text(
+                title,
+                style: TextStyle(
+                  fontSize: 20,
+                  fontWeight: FontWeight.bold,
+                  color: color,
+                ),
+              ),
+            ],
+          ),
+          const SizedBox(height: 16),
+          child,
+        ],
+      ),
+    );
+  }
+
+  Widget _buildFeatureItem({
+    required IconData icon,
+    required String title,
+    required String description,
+    required Color color,
+  }) {
+    return Container(
+      margin: const EdgeInsets.only(bottom: 12),
+      child: Row(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Container(
+            width: 40,
+            height: 40,
+            decoration: BoxDecoration(
+              color: color.withOpacity(0.1),
+              borderRadius: BorderRadius.circular(10),
+            ),
+            child: Icon(icon, color: color, size: 22),
+          ),
+          const SizedBox(width: 12),
+          Expanded(
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                Text(
+                  title,
+                  style: const TextStyle(
+                    fontWeight: FontWeight.bold,
+                    fontSize: 16,
+                  ),
+                ),
+                const SizedBox(height: 4),
+                Text(
+                  description,
+                  style: TextStyle(
+                    color: Colors.grey[700],
+                    fontSize: 14,
+                  ),
+                ),
+              ],
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildTeamMember({
+    required String name,
+    required String description,
+    required Color avatarColor,
+  }) {
+    return Container(
+      margin: const EdgeInsets.only(bottom: 12),
+      child: Row(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          CircleAvatar(
+            backgroundColor: avatarColor.withOpacity(0.1),
+            radius: 20,
+            child: Icon(
+              Icons.person,
+              color: avatarColor,
+              size: 20,
+            ),
+          ),
+          const SizedBox(width: 12),
+          Expanded(
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                Text(
+                  name,
+                  style: const TextStyle(
+                    fontWeight: FontWeight.bold,
+                    fontSize: 16,
+                  ),
+                ),
+                const SizedBox(height: 4),
+                Text(
+                  description,
+                  style: TextStyle(
+                    color: Colors.grey[700],
+                    fontSize: 14,
+                  ),
+                ),
+              ],
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildContactItem({
+    required IconData icon,
+    required String label,
+    required String value,
+    required VoidCallback onTap,
+  }) {
+    return GestureDetector(
+      onTap: onTap,
+      child: Container(
+        margin: const EdgeInsets.only(bottom: 12),
+        child: Row(
+          children: [
+            Container(
+              width: 40,
+              height: 40,
+              decoration: BoxDecoration(
+                color: Colors.blue.withOpacity(0.1),
+                borderRadius: BorderRadius.circular(10),
+              ),
+              child: Icon(icon, color: Colors.blue, size: 22),
+            ),
+            const SizedBox(width: 12),
+            Expanded(
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  Text(
+                    label,
+                    style: const TextStyle(
+                      fontSize: 14,
+                      color: Colors.grey,
+                    ),
+                  ),
+                  Text(
+                    value,
+                    style: const TextStyle(
+                      fontWeight: FontWeight.w500,
+                      fontSize: 16,
+                    ),
+                  ),
+                ],
+              ),
+            ),
+            const Icon(Icons.chevron_right, color: Colors.grey),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _buildSocialButton({
+    required IconData icon,
+    required String label,
+    required VoidCallback onTap,
+  }) {
+    return GestureDetector(
+      onTap: onTap,
+      child: Container(
+        margin: const EdgeInsets.symmetric(horizontal: 12),
+        child: Column(
+          children: [
+            Container(
+              width: 60,
+              height: 60,
+              decoration: BoxDecoration(
+                color: Colors.red.withOpacity(0.1),
+                borderRadius: BorderRadius.circular(30),
+              ),
+              child: Icon(icon, color: Colors.red, size: 30),
+            ),
+            const SizedBox(height: 8),
+            Text(label, style: const TextStyle(fontSize: 14)),
+          ],
+        ),
+      ),
+    );
+  }
+
+  void _showWechatQRCode(BuildContext context) {
+    showDialog(
+      context: context,
+      builder: (context) => Dialog(
+        shape: RoundedRectangleBorder(
+          borderRadius: BorderRadius.circular(20),
+        ),
+        child: Container(
+          padding: const EdgeInsets.all(24),
+          child: Column(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              const Text(
+                '关注微信公众号',
+                style: TextStyle(
+                  fontSize: 18,
+                  fontWeight: FontWeight.bold,
+                ),
+              ),
+              const SizedBox(height: 16),
+              Container(
+                width: 200,
+                height: 200,
+                decoration: BoxDecoration(
+                  color: Colors.white,
+                  borderRadius: BorderRadius.circular(10),
+                  border: Border.all(color: Colors.grey[300]!),
+                ),
+                child: const Icon(
+                  Icons.qr_code_scanner,
+                  size: 100,
+                  color: Colors.grey,
+                ),
+              ),
+              const SizedBox(height: 16),
+              const Text(
+                '扫描二维码关注「中了么」公众号',
+                textAlign: TextAlign.center,
+                style: TextStyle(color: Colors.grey),
+              ),
+              const SizedBox(height: 20),
+              TextButton(
+                onPressed: () => Navigator.of(context).pop(),
+                child: const Text('关闭'),
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}

lib/presentation/screens/profile/profile_help_screen.dart

@@ -0,0 +1,538 @@
+import 'package:flutter/material.dart';
+import 'package:url_launcher/url_launcher.dart';
+
+class HelpCenterScreen extends StatefulWidget {
+  const HelpCenterScreen({super.key});
+
+  @override
+  State<HelpCenterScreen> createState() => _HelpCenterScreenState();
+}
+
+class _HelpCenterScreenState extends State<HelpCenterScreen> {
+  final TextEditingController _searchController = TextEditingController();
+  final List<FAQItem> _allFAQs = [];
+  List<FAQItem> _filteredFAQs = [];
+  List<FAQCategory> _categories = [];
+  bool _isSearching = false;
+  String _selectedCategoryId = 'all';
+
+  @override
+  void initState() {
+    super.initState();
+    _initializeData();
+    _searchController.addListener(_onSearchChanged);
+  }
+
+  @override
+  void dispose() {
+    _searchController.dispose();
+    super.dispose();
+  }
+
+  void _initializeData() {
+    // 初始化分类数据
+    _categories = [
+      FAQCategory(id: 'all', name: '全部', icon: Icons.all_inclusive, color: Colors.blue),
+      FAQCategory(id: 'account', name: '账户问题', icon: Icons.person, color: Colors.purple),
+      FAQCategory(id: 'payment', name: '支付相关', icon: Icons.payment, color: Colors.green),
+      FAQCategory(id: 'order', name: '订单问题', icon: Icons.shopping_cart, color: Colors.orange),
+      FAQCategory(id: 'app', name: '应用使用', icon: Icons.phone_iphone, color: Colors.red),
+      FAQCategory(id: 'privacy', name: '隐私安全', icon: Icons.security, color: Colors.teal),
+      FAQCategory(id: 'other', name: '其他问题', icon: Icons.help_outline, color: Colors.grey),
+    ];
+
+    // 初始化FAQ数据
+    _allFAQs.addAll([
+      FAQItem(
+        id: '1',
+        question: '如何修改个人资料？',
+        answer: '您可以在"我的"页面点击头像或个人信息进入编辑页面进行修改。修改完成后记得点击保存按钮。',
+        categoryId: 'account',
+        isExpanded: false,
+      ),
+      FAQItem(
+        id: '2',
+        question: '忘记密码怎么办？',
+        answer: '在登录页面点击"忘记密码"，按照提示输入注册邮箱或手机号，系统将发送重置密码链接到您的邮箱或手机。',
+        categoryId: 'account',
+        isExpanded: false,
+      ),
+      FAQItem(
+        id: '3',
+        question: '如何绑定/解绑第三方登录？',
+        answer: '进入"设置" -> "账户与安全" -> "第三方账号绑定"，在这里可以绑定或解绑微信、Apple ID等第三方账号。',
+        categoryId: 'account',
+        isExpanded: false,
+      ),
+      FAQItem(
+        id: '4',
+        question: '支付方式有哪些？',
+        answer: '我们支持微信支付、支付宝、银联卡等多种支付方式。在支付时可以选择您方便的支付方式进行付款。',
+        categoryId: 'payment',
+        isExpanded: false,
+      ),
+      FAQItem(
+        id: '5',
+        question: '支付遇到问题怎么办？',
+        answer: '1. 检查网络连接\n2. 确认支付账户余额充足\n3. 检查银行卡是否过期\n4. 如仍无法解决，请联系客服提供订单号',
+        categoryId: 'payment',
+        isExpanded: false,
+      ),
+      FAQItem(
+        id: '6',
+        question: '如何查看订单状态？',
+        answer: '进入"我的订单"页面，可以查看所有订单的详细状态，包括待支付、进行中、已完成、已取消等状态。',
+        categoryId: 'order',
+        isExpanded: false,
+      ),
+      FAQItem(
+        id: '7',
+        question: '如何取消订单？',
+        answer: '在订单详情页面，如果订单状态允许取消，会出现"取消订单"按钮。请注意，部分订单在特定状态下不可取消。',
+        categoryId: 'order',
+        isExpanded: false,
+      ),
+      FAQItem(
+        id: '8',
+        question: '应用出现闪退怎么办？',
+        answer: '1. 尝试重启应用\n2. 检查应用是否为最新版本\n3. 清理手机缓存\n4. 重启手机设备\n5. 如问题持续，请反馈给我们',
+        categoryId: 'app',
+        isExpanded: false,
+      ),
+      FAQItem(
+        id: '9',
+        question: '如何更新应用到最新版本？',
+        answer: 'iOS用户：前往App Store搜索应用并更新\nAndroid用户：前往应用商店或应用内检查更新',
+        categoryId: 'app',
+        isExpanded: false,
+      ),
+      FAQItem(
+        id: '10',
+        question: '如何保护我的隐私信息？',
+        answer: '我们采用加密技术保护您的数据，不会向第三方泄露您的个人信息。您可以在隐私设置中管理数据权限。',
+        categoryId: 'privacy',
+        isExpanded: false,
+      ),
+      FAQItem(
+        id: '11',
+        question: '如何联系客服？',
+        answer: '1. 拨打电话：400-123-4567（工作日 9:00-18:00）\n2. 发送邮件：support@example.com\n3. 在线客服：应用内"我的客服"',
+        categoryId: 'other',
+        isExpanded: false,
+      ),
+      FAQItem(
+        id: '12',
+        question: '服务时间是什么时候？',
+        answer: '在线客服：每天 8:00-22:00\n电话客服：工作日 9:00-18:00\n节假日服务时间可能调整',
+        categoryId: 'other',
+        isExpanded: false,
+      ),
+    ]);
+
+    _filteredFAQs = List.from(_allFAQs);
+  }
+
+  void _onSearchChanged() {
+    final query = _searchController.text.trim();
+    setState(() {
+      _isSearching = query.isNotEmpty;
+      _filteredFAQs = _allFAQs.where((faq) {
+        final matchesSearch = faq.question.toLowerCase().contains(query.toLowerCase()) ||
+            (faq.answer?.toLowerCase().contains(query.toLowerCase()) ?? false);
+        
+        final matchesCategory = _selectedCategoryId == 'all' || 
+            faq.categoryId == _selectedCategoryId;
+        
+        return matchesSearch && matchesCategory;
+      }).toList();
+    });
+  }
+
+  void _selectCategory(String categoryId) {
+    setState(() {
+      _selectedCategoryId = categoryId;
+      _filteredFAQs = _allFAQs.where((faq) {
+        final matchesSearch = _isSearching
+            ? (faq.question.toLowerCase().contains(_searchController.text.toLowerCase()) ||
+                (faq.answer?.toLowerCase().contains(_searchController.text.toLowerCase()) ?? false))
+            : true;
+        
+        final matchesCategory = categoryId == 'all' || faq.categoryId == categoryId;
+        
+        return matchesSearch && matchesCategory;
+      }).toList();
+    });
+  }
+
+  void _toggleFAQ(int index) {
+    setState(() {
+      _filteredFAQs[index].isExpanded = !_filteredFAQs[index].isExpanded;
+    });
+  }
+
+  Future<void> _contactSupport(String method) async {
+    switch (method) {
+      case 'phone':
+        final Uri telUri = Uri.parse('tel:4001234567');
+        if (await canLaunchUrl(telUri)) {
+          await launchUrl(telUri);
+        }
+        break;
+      case 'email':
+        final Uri emailUri = Uri(
+          scheme: 'mailto',
+          path: 'support@example.com',
+          queryParameters: {'subject': '用户咨询'},
+        );
+        if (await canLaunchUrl(emailUri)) {
+          await launchUrl(emailUri);
+        }
+        break;
+    }
+  }
+
+  void _showFeedbackDialog(BuildContext context) {
+    showDialog(
+      context: context,
+      builder: (context) => AlertDialog(
+        title: const Text('问题反馈'),
+        content: const Text('您可以将遇到的问题详细描述并发送给我们，我们会尽快处理。'),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.of(context).pop(),
+            child: const Text('取消'),
+          ),
+          TextButton(
+            onPressed: () {
+              Navigator.of(context).pop();
+              _contactSupport('email');
+            },
+            child: const Text('去反馈'),
+          ),
+        ],
+      ),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('帮助中心'),
+        actions: [
+          IconButton(
+            icon: const Icon(Icons.feedback_outlined),
+            tooltip: '问题反馈',
+            onPressed: () => _showFeedbackDialog(context),
+          ),
+        ],
+      ),
+      body: Column(
+        children: [
+          // 搜索栏
+          Padding(
+            padding: const EdgeInsets.all(16),
+            child: Container(
+              decoration: BoxDecoration(
+                color: Colors.grey[100],
+                borderRadius: BorderRadius.circular(12),
+                border: Border.all(color: Colors.grey[300]!),
+              ),
+              child: TextField(
+                controller: _searchController,
+                decoration: InputDecoration(
+                  hintText: '搜索问题或关键词...',
+                  prefixIcon: const Icon(Icons.search, color: Colors.grey),
+                  border: InputBorder.none,
+                  suffixIcon: _searchController.text.isNotEmpty
+                      ? IconButton(
+                          icon: const Icon(Icons.clear, color: Colors.grey),
+                          onPressed: () {
+                            _searchController.clear();
+                            _onSearchChanged();
+                          },
+                        )
+                      : null,
+                  contentPadding: const EdgeInsets.symmetric(vertical: 14),
+                ),
+              ),
+            ),
+          ),
+
+          // 分类导航
+          SizedBox(
+            height: 100,
+            child: ListView.builder(
+              scrollDirection: Axis.horizontal,
+              padding: const EdgeInsets.symmetric(horizontal: 16),
+              itemCount: _categories.length,
+              itemBuilder: (context, index) {
+                final category = _categories[index];
+                final isSelected = _selectedCategoryId == category.id;
+                
+                return Padding(
+                  padding: const EdgeInsets.only(right: 12),
+                  child: Column(
+                    children: [
+                      GestureDetector(
+                        onTap: () => _selectCategory(category.id),
+                        child: Container(
+                          width: 70,
+                          height: 70,
+                          decoration: BoxDecoration(
+                            color: isSelected 
+                                ? category.color.withOpacity(0.2)
+                                : Colors.grey[50],
+                            borderRadius: BorderRadius.circular(16),
+                            border: Border.all(
+                              color: isSelected 
+                                  ? category.color 
+                                  : Colors.transparent,
+                              width: 2,
+                            ),
+                          ),
+                          child: Column(
+                            mainAxisAlignment: MainAxisAlignment.center,
+                            children: [
+                              Icon(category.icon, color: category.color, size: 28),
+                              const SizedBox(height: 4),
+                            ],
+                          ),
+                        ),
+                      ),
+                      const SizedBox(height: 4),
+                      Text(
+                        category.name,
+                        style: TextStyle(
+                          fontSize: 12,
+                          fontWeight: isSelected ? FontWeight.bold : FontWeight.normal,
+                          color: isSelected ? category.color : Colors.grey[700],
+                        ),
+                      ),
+                    ],
+                  ),
+                );
+              },
+            ),
+          ),
+
+          // 问题列表
+          Expanded(
+            child: _filteredFAQs.isEmpty
+                ? Center(
+                    child: Column(
+                      mainAxisAlignment: MainAxisAlignment.center,
+                      children: [
+                        Icon(
+                          Icons.search_off,
+                          size: 60,
+                          color: Colors.grey[400],
+                        ),
+                        const SizedBox(height: 16),
+                        Text(
+                          _isSearching
+                              ? '没有找到相关问题的解答'
+                              : '暂无问题',
+                          style: TextStyle(
+                            color: Colors.grey[600],
+                            fontSize: 16,
+                          ),
+                        ),
+                        if (_isSearching) ...[
+                          const SizedBox(height: 8),
+                          TextButton(
+                            onPressed: () => _showFeedbackDialog(context),
+                            child: const Text('反馈问题给我们'),
+                          ),
+                        ],
+                      ],
+                    ),
+                  )
+                : ListView.builder(
+                    padding: const EdgeInsets.all(16),
+                    itemCount: _filteredFAQs.length,
+                    itemBuilder: (context, index) {
+                      final faq = _filteredFAQs[index];
+                      final category = _categories.firstWhere(
+                        (cat) => cat.id == faq.categoryId,
+                        orElse: () => _categories.last,
+                      );
+                      
+                      return Card(
+                        margin: const EdgeInsets.only(bottom: 12),
+                        elevation: 1,
+                        shape: RoundedRectangleBorder(
+                          borderRadius: BorderRadius.circular(12),
+                          side: BorderSide(color: Colors.grey[200]!),
+                        ),
+                        child: ExpansionTile(
+                          key: Key(faq.id),
+                          initiallyExpanded: faq.isExpanded,
+                          onExpansionChanged: (_) => _toggleFAQ(index),
+                          leading: Container(
+                            width: 36,
+                            height: 36,
+                            decoration: BoxDecoration(
+                              color: category.color.withOpacity(0.1),
+                              borderRadius: BorderRadius.circular(8),
+                            ),
+                            child: Icon(
+                              category.icon,
+                              color: category.color,
+                              size: 20,
+                            ),
+                          ),
+                          title: Text(
+                            faq.question,
+                            style: const TextStyle(
+                              fontWeight: FontWeight.w500,
+                              fontSize: 15,
+                            ),
+                          ),
+                          children: [
+                            Padding(
+                              padding: const EdgeInsets.fromLTRB(68, 8, 16, 16),
+                              child: Column(
+                                crossAxisAlignment: CrossAxisAlignment.start,
+                                children: [
+                                  Text(
+                                    faq.answer ?? '',
+                                    style: TextStyle(
+                                      color: Colors.grey[700],
+                                      fontSize: 14,
+                                      height: 1.5,
+                                    ),
+                                  ),
+                                  if (faq.id == '11') ...[
+                                    const SizedBox(height: 16),
+                                    const Text(
+                                      '快速联系：',
+                                      style: TextStyle(
+                                        fontWeight: FontWeight.bold,
+                                        fontSize: 14,
+                                      ),
+                                    ),
+                                    const SizedBox(height: 8),
+                                    Row(
+                                      children: [
+                                        ElevatedButton.icon(
+                                          onPressed: () => _contactSupport('phone'),
+                                          icon: const Icon(Icons.phone, size: 16),
+                                          label: const Text('电话联系'),
+                                          style: ElevatedButton.styleFrom(
+                                            backgroundColor: Colors.green[50],
+                                            foregroundColor: Colors.green,
+                                            elevation: 0,
+                                          ),
+                                        ),
+                                        const SizedBox(width: 12),
+                                        ElevatedButton.icon(
+                                          onPressed: () => _contactSupport('email'),
+                                          icon: const Icon(Icons.email, size: 16),
+                                          label: const Text('发送邮件'),
+                                          style: ElevatedButton.styleFrom(
+                                            backgroundColor: Colors.blue[50],
+                                            foregroundColor: Colors.blue,
+                                            elevation: 0,
+                                          ),
+                                        ),
+                                      ],
+                                    ),
+                                  ],
+                                ],
+                              ),
+                            ),
+                          ],
+                        ),
+                      );
+                    },
+                  ),
+          ),
+
+          // 底部联系栏
+          Container(
+            padding: const EdgeInsets.all(16),
+            decoration: BoxDecoration(
+              color: Colors.grey[50],
+              border: Border(top: BorderSide(color: Colors.grey[300]!)),
+            ),
+            child: Column(
+              children: [
+                const Text(
+                  '没有找到您需要的答案？',
+                  style: TextStyle(
+                    fontWeight: FontWeight.w600,
+                    fontSize: 15,
+                  ),
+                ),
+                const SizedBox(height: 8),
+                const Text(
+                  '我们的客服团队随时为您提供帮助',
+                  style: TextStyle(color: Colors.grey, fontSize: 13),
+                ),
+                const SizedBox(height: 16),
+                Row(
+                  mainAxisAlignment: MainAxisAlignment.spaceEvenly,
+                  children: [
+                    Expanded(
+                      child: OutlinedButton.icon(
+                        onPressed: () => _contactSupport('phone'),
+                        icon: const Icon(Icons.phone, size: 18),
+                        label: const Text('电话客服'),
+                        style: OutlinedButton.styleFrom(
+                          padding: const EdgeInsets.symmetric(vertical: 12),
+                        ),
+                      ),
+                    ),
+                    const SizedBox(width: 12),
+                    Expanded(
+                      child: ElevatedButton.icon(
+                        onPressed: () => _showFeedbackDialog(context),
+                        icon: const Icon(Icons.chat, size: 18),
+                        label: const Text('在线反馈'),
+                        style: ElevatedButton.styleFrom(
+                          padding: const EdgeInsets.symmetric(vertical: 12),
+                        ),
+                      ),
+                    ),
+                  ],
+                ),
+              ],
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+// 数据模型
+class FAQItem {
+  final String id;
+  final String question;
+  final String? answer;
+  final String categoryId;
+  bool isExpanded;
+
+  FAQItem({
+    required this.id,
+    required this.question,
+    this.answer,
+    required this.categoryId,
+    required this.isExpanded,
+  });
+}
+
+class FAQCategory {
+  final String id;
+  final String name;
+  final IconData icon;
+  final Color color;
+
+  FAQCategory({
+    required this.id,
+    required this.name,
+    required this.icon,
+    required this.color,
+  });
+}

lib/presentation/screens/profile/profile_modify_password_screen.dart

@@ -0,0 +1,486 @@
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+import '../../providers/auth_provider.dart';
+import '../../widgets/common/app_button.dart';
+import '../../widgets/common/app_text_field.dart';
+
+class ChangePasswordScreen extends StatefulWidget {
+  const ChangePasswordScreen({super.key});
+
+  @override
+  State<ChangePasswordScreen> createState() => _ChangePasswordScreenState();
+}
+
+class _ChangePasswordScreenState extends State<ChangePasswordScreen> {
+  // 密码控制器
+  late TextEditingController _oldPasswordController;
+  late TextEditingController _newPasswordController;
+  late TextEditingController _confirmPasswordController;
+  
+  final _formKey = GlobalKey<FormState>();
+
+  // 密码是否可见
+  bool _isOldPasswordVisible = false;
+  bool _isNewPasswordVisible = false;
+  bool _isConfirmPasswordVisible = false;
+  
+  // 密码强度相关
+  String _passwordStrength = '';
+  Color _strengthColor = Colors.grey;
+  double _strengthValue = 0.0;
+  
+  @override
+  void initState() {
+    super.initState();
+    _oldPasswordController = TextEditingController();
+    _newPasswordController = TextEditingController();
+    _confirmPasswordController = TextEditingController();
+    
+    // 监听新密码输入，实时评估强度
+    _newPasswordController.addListener(_evaluatePasswordStrength);
+  }
+  
+  @override
+  void dispose() {
+    _oldPasswordController.dispose();
+    _newPasswordController.dispose();
+    _confirmPasswordController.dispose();
+    super.dispose();
+  }
+  
+  // 评估密码强度
+  void _evaluatePasswordStrength() {
+    final password = _newPasswordController.text;
+    
+    if (password.isEmpty) {
+      setState(() {
+        _passwordStrength = '';
+        _strengthValue = 0.0;
+        _strengthColor = Colors.grey;
+      });
+      return;
+    }
+    
+    // 强度评估逻辑
+    int score = 0;
+    if (password.length >= 8) score++;
+    if (RegExp(r'[A-Z]').hasMatch(password)) score++;
+    if (RegExp(r'[a-z]').hasMatch(password)) score++;
+    if (RegExp(r'[0-9]').hasMatch(password)) score++;
+    if (RegExp(r'[!@#$%^&*(),.?":{}|<>]').hasMatch(password)) score++;
+    
+    setState(() {
+      _strengthValue = score / 5.0;
+      
+      switch (score) {
+        case 0:
+        case 1:
+          _passwordStrength = '弱';
+          _strengthColor = Colors.red;
+          break;
+        case 2:
+        case 3:
+          _passwordStrength = '中';
+          _strengthColor = Colors.orange;
+          break;
+        case 4:
+        case 5:
+          _passwordStrength = '强';
+          _strengthColor = Colors.green;
+          break;
+        default:
+          _passwordStrength = '';
+          _strengthColor = Colors.grey;
+      }
+    });
+  }
+  
+  // 切换密码可见性
+  void _togglePasswordVisibility(String field) {
+    setState(() {
+      switch (field) {
+        case 'old':
+          _isOldPasswordVisible = !_isOldPasswordVisible;
+          break;
+        case 'new':
+          _isNewPasswordVisible = !_isNewPasswordVisible;
+          break;
+        case 'confirm':
+          _isConfirmPasswordVisible = !_isConfirmPasswordVisible;
+          break;
+      }
+    });
+  }
+  
+  // 提交修改密码
+  Future<void> _submitChangePassword(BuildContext context) async {
+    if (!_formKey.currentState!.validate()) {
+      return;
+    }
+    
+    final authProvider = Provider.of<AuthProvider>(context, listen: false);
+    
+    // 调用Provider中的修改密码方法
+    await authProvider.modifyPassword(
+      _oldPasswordController.text,
+      _newPasswordController.text,
+    );
+    
+    if (authProvider.error == null && mounted) {
+      // 成功：显示提示并返回
+      ScaffoldMessenger.of(context).showSnackBar(
+        const SnackBar(
+          content: Text('密码修改成功'),
+          backgroundColor: Colors.green,
+          duration: Duration(seconds: 2),
+        ),
+      );
+      
+      // 清空表单
+      _oldPasswordController.clear();
+      _newPasswordController.clear();
+      _confirmPasswordController.clear();
+      
+      // 延迟返回，让用户看到成功提示
+      Future.delayed(const Duration(milliseconds: 1500), () {
+        if (mounted) {
+          Navigator.of(context).pop();
+        }
+      });
+    } else if (mounted) {
+      // 失败：错误信息已在Provider中设置，这里会通过Consumer显示
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(
+          content: Text(authProvider.error ?? '密码修改失败'),
+          backgroundColor: Colors.red,
+          duration: const Duration(seconds: 3),
+        ),
+      );
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('修改密码'),
+        leading: IconButton(
+          icon: const Icon(Icons.arrow_back),
+          onPressed: () {
+            // 如果有未保存的更改，提示用户
+            if (_oldPasswordController.text.isNotEmpty ||
+                _newPasswordController.text.isNotEmpty ||
+                _confirmPasswordController.text.isNotEmpty) {
+              _showUnsavedChangesDialog(context);
+            } else {
+              Navigator.of(context).pop();
+            }
+          },
+        ),
+      ),
+      body: Consumer<AuthProvider>(
+        builder: (context, authProvider, _) {
+          return SingleChildScrollView(
+            padding: const EdgeInsets.all(20),
+            child: Form(
+              key: _formKey,
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  // 提示信息
+                  Container(
+                    padding: const EdgeInsets.all(12),
+                    decoration: BoxDecoration(
+                      color: Colors.blue[50],
+                      borderRadius: BorderRadius.circular(8),
+                      border: Border.all(color: Colors.blue[100]!),
+                    ),
+                    child: Row(
+                      children: [
+                        Icon(Icons.info_outline, color: Colors.blue[700]),
+                        const SizedBox(width: 10),
+                        Expanded(
+                          child: Text(
+                            '为了账户安全，请定期修改密码',
+                            style: TextStyle(
+                              color: Colors.blue[800],
+                              fontSize: 14,
+                            ),
+                          ),
+                        ),
+                      ],
+                    ),
+                  ),
+                  const SizedBox(height: 30),
+                  
+                  // 旧密码输入
+                  AppTextField(
+                    controller: _oldPasswordController,
+                    labelText: '当前密码',
+                    hintText: '请输入当前使用的密码',
+                    obscureText: !_isOldPasswordVisible,
+                    suffixIcon: IconButton(
+                      icon: Icon(
+                        _isOldPasswordVisible
+                            ? Icons.visibility_off
+                            : Icons.visibility,
+                        color: Colors.grey[600],
+                      ),
+                      onPressed: () => _togglePasswordVisibility('old'),
+                    ),
+                    validator: (value) {
+                      if (value == null || value.isEmpty) {
+                        return '请输入当前密码';
+                      }
+                      if (value.length < 6) {
+                        return '密码长度至少6位';
+                      }
+                      return null;
+                    },
+                  ),
+                  const SizedBox(height: 20),
+                  
+                  // 新密码输入
+                  AppTextField(
+                    controller: _newPasswordController,
+                    labelText: '新密码',
+                    hintText: '请输入新密码',
+                    obscureText: !_isNewPasswordVisible,
+                    suffixIcon: IconButton(
+                      icon: Icon(
+                        _isNewPasswordVisible
+                            ? Icons.visibility_off
+                            : Icons.visibility,
+                        color: Colors.grey[600],
+                      ),
+                      onPressed: () => _togglePasswordVisibility('new'),
+                    ),
+                    validator: (value) {
+                      if (value == null || value.isEmpty) {
+                        return '请输入新密码';
+                      }
+                      if (value.length < 8) {
+                        return '密码长度至少8位';
+                      }
+                      if (value == _oldPasswordController.text) {
+                        return '新密码不能与旧密码相同';
+                      }
+                      return null;
+                    },
+                  ),
+                  
+                  // 密码强度指示器
+                  if (_newPasswordController.text.isNotEmpty) ...[
+                    const SizedBox(height: 8),
+                    Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        Row(
+                          children: [
+                            Text(
+                              '密码强度: ',
+                              style: TextStyle(
+                                fontSize: 13,
+                                color: Colors.grey[700],
+                              ),
+                            ),
+                            Text(
+                              _passwordStrength,
+                              style: TextStyle(
+                                fontSize: 13,
+                                fontWeight: FontWeight.bold,
+                                color: _strengthColor,
+                              ),
+                            ),
+                          ],
+                        ),
+                        const SizedBox(height: 4),
+                        LinearProgressIndicator(
+                          value: _strengthValue,
+                          backgroundColor: Colors.grey[200],
+                          color: _strengthColor,
+                          minHeight: 6,
+                          borderRadius: BorderRadius.circular(3),
+                        ),
+                        const SizedBox(height: 4),
+                        Text(
+                          '建议使用字母、数字和特殊符号的组合',
+                          style: TextStyle(
+                            fontSize: 12,
+                            color: Colors.grey[600],
+                          ),
+                        ),
+                      ],
+                    ),
+                  ],
+                  const SizedBox(height: 20),
+                  
+                  // 确认新密码输入
+                  AppTextField(
+                    controller: _confirmPasswordController,
+                    labelText: '确认新密码',
+                    hintText: '请再次输入新密码',
+                    obscureText: !_isConfirmPasswordVisible,
+                    suffixIcon: IconButton(
+                      icon: Icon(
+                        _isConfirmPasswordVisible
+                            ? Icons.visibility_off
+                            : Icons.visibility,
+                        color: Colors.grey[600],
+                      ),
+                      onPressed: () => _togglePasswordVisibility('confirm'),
+                    ),
+                    validator: (value) {
+                      if (value == null || value.isEmpty) {
+                        return '请确认新密码';
+                      }
+                      if (value != _newPasswordController.text) {
+                        return '两次输入的密码不一致';
+                      }
+                      return null;
+                    },
+                  ),
+                  const SizedBox(height: 30),
+                  
+                  // 密码要求说明
+                  Container(
+                    padding: const EdgeInsets.all(15),
+                    decoration: BoxDecoration(
+                      color: Colors.grey[50],
+                      borderRadius: BorderRadius.circular(8),
+                      border: Border.all(color: Colors.grey[300]!),
+                    ),
+                    child: Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        Text(
+                          '密码要求：',
+                          style: TextStyle(
+                            fontWeight: FontWeight.bold,
+                            color: Colors.grey[800],
+                          ),
+                        ),
+                        const SizedBox(height: 8),
+                        _buildRequirementItem('至少8个字符', true),
+                        _buildRequirementItem('包含大小写字母', false),
+                        _buildRequirementItem('包含数字', false),
+                        _buildRequirementItem('可包含特殊符号（如 ! @ # \$）', false),
+                      ],
+                    ),
+                  ),
+                  const SizedBox(height: 40),
+                  
+                  // 错误信息显示
+                  if (authProvider.error != null)
+                    Padding(
+                      padding: const EdgeInsets.only(bottom: 16),
+                      child: Container(
+                        padding: const EdgeInsets.all(12),
+                        decoration: BoxDecoration(
+                          color: Colors.red[50],
+                          borderRadius: BorderRadius.circular(8),
+                          border: Border.all(color: Colors.red[200]!),
+                        ),
+                        child: Row(
+                          children: [
+                            Icon(Icons.error_outline, color: Colors.red[700]),
+                            const SizedBox(width: 10),
+                            Expanded(
+                              child: Text(
+                                authProvider.error!,
+                                style: TextStyle(color: Colors.red[700]),
+                              ),
+                            ),
+                          ],
+                        ),
+                      ),
+                    ),
+                  
+                  // 保存按钮
+                  AppButton(
+                    text: '确认修改密码',
+                    isLoading: authProvider.isLoading,
+                    enabled: !authProvider.isLoading,
+                    onPressed: () => _submitChangePassword(context),
+                  ),
+                  const SizedBox(height: 20),
+                  
+                  // 取消按钮
+                  if (!authProvider.isLoading)
+                    Center(
+                      child: TextButton(
+                        onPressed: () {
+                          if (_oldPasswordController.text.isNotEmpty ||
+                              _newPasswordController.text.isNotEmpty ||
+                              _confirmPasswordController.text.isNotEmpty) {
+                            _showUnsavedChangesDialog(context);
+                          } else {
+                            Navigator.of(context).pop();
+                          }
+                        },
+                        child: const Text(
+                          '取消',
+                          style: TextStyle(color: Colors.grey),
+                        ),
+                      ),
+                    ),
+                ],
+              ),
+            ),
+          );
+        },
+      ),
+    );
+  }
+  
+  // 构建密码要求项
+  Widget _buildRequirementItem(String text, bool isRequired) {
+    return Padding(
+      padding: const EdgeInsets.only(bottom: 4),
+      child: Row(
+        children: [
+          Icon(
+            isRequired ? Icons.check_circle : Icons.info_outline,
+            size: 16,
+            color: isRequired ? Colors.green : Colors.grey[600],
+          ),
+          const SizedBox(width: 8),
+          Text(
+            text,
+            style: TextStyle(
+              fontSize: 13,
+              color: Colors.grey[700],
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+  
+  // 显示未保存更改的对话框
+  void _showUnsavedChangesDialog(BuildContext context) {
+    showDialog(
+      context: context,
+      builder: (context) => AlertDialog(
+        title: const Text('放弃修改？'),
+        content: const Text('您有未保存的密码修改，确定要离开吗？'),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.of(context).pop(),
+            child: const Text('取消'),
+          ),
+          TextButton(
+            onPressed: () {
+              Navigator.of(context).pop(); // 关闭对话框
+              Navigator.of(context).pop(); // 返回上一页
+            },
+            child: const Text(
+              '确定',
+              style: TextStyle(color: Colors.red),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}

lib/presentation/screens/profile/profile_screen.dart

@@ -4,7 +4,10 @@ import '../../../core/constants/route_constants.dart';
 import '../../providers/auth_provider.dart';
 import '../../navigation/bottom_nav_bar.dart';
 import '../../widgets/common/app_button.dart';
+import 'profile_about_screen.dart';
 import 'profile_detail_screen.dart';
+import 'profile_help_screen.dart';
+import 'profile_modify_password_screen.dart';
 
 class ProfileScreen extends StatelessWidget {
   const ProfileScreen({super.key});
@@ -236,8 +239,14 @@ class _ProfileContentState extends State<_ProfileContent> {
                         _buildMenuItem(
                           icon: Icons.lock_outline,
                           title: '账号安全',
-                          subtitle: '修改密码和安全设置',
-                          onTap: () {},
+                          subtitle: '修改密码',
+                          onTap: () {
+                            Navigator.of(context).push(
+                              MaterialPageRoute(
+                                builder: (_) => const ChangePasswordScreen(),
+                              ),
+                            );
+                          },
                         ),
                         _buildMenuItem(
                           icon: Icons.notifications_none,
@@ -280,13 +289,25 @@ class _ProfileContentState extends State<_ProfileContent> {
                         icon: Icons.help_outline,
                         title: '帮助中心',
                         subtitle: '常见问题和帮助文档',
-                        onTap: () {},
+                        onTap: () {
+                          Navigator.of(context).push(
+                              MaterialPageRoute(
+                                builder: (_) => const HelpCenterScreen(),
+                              ),
+                            );
+                        },
                       ),
                       _buildMenuItem(
                         icon: Icons.info_outline,
                         title: '关于我们',
                         subtitle: '了解应用信息',
-                        onTap: () {},
+                        onTap: () {
+                          Navigator.of(context).push(
+                              MaterialPageRoute(
+                                builder: (_) => const AboutUsScreen(),
+                              ),
+                            );
+                        },
                       ),
                       if (authProvider.isAuthenticated) ... [
                         _buildMenuItem(

lib/presentation/screens/splash_screen.dart

@@ -47,7 +47,7 @@ class SplashScreenState extends State<SplashScreen> {
             ),
             const SizedBox(height: 20),
             const Text(
-              '采油会',
+              '中了么',
               style: TextStyle(
                 fontSize: 32,
                 fontWeight: FontWeight.bold,

pubspec.lock

@@ -148,10 +148,10 @@ packages:
     dependency: "direct main"
     description:
       name: get_it
-      sha256: d85128a5dae4ea777324730dc65edd9c9f43155c109d5cc0a69cab74139fbac1
+      sha256: "1d648d2dd2047d7f7450d5727ca24ee435f240385753d90b49650e3cdff32e56"
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "7.7.0"
+    version: "9.2.0"
   http:
     dependency: "direct main"
     description:
@@ -172,10 +172,10 @@ packages:
     dependency: "direct main"
     description:
       name: intl
-      sha256: "3bc132a9dbce73a7e4a21a17d06e1878839ffbf975568bc875c60537824b0c4d"
+      sha256: "3df61194eb431efc39c4ceba583b95633a403f46c9fd341e550ce0bfa50e9aa5"
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.18.1"
+    version: "0.20.2"
   js:
     dependency: transitive
     description:
@@ -248,6 +248,22 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.0.0"
+  package_info_plus:
+    dependency: "direct main"
+    description:
+      name: package_info_plus
+      sha256: "7e76fad405b3e4016cd39d08f455a4eb5199723cf594cd1b8916d47140d93017"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "4.2.0"
+  package_info_plus_platform_interface:
+    dependency: transitive
+    description:
+      name: package_info_plus_platform_interface
+      sha256: "9bc8ba46813a4cc42c66ab781470711781940780fd8beddd0c3da62506d3a6c6"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.0.1"
   path:
     dependency: transitive
     description:
@@ -445,6 +461,70 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.4.0"
+  url_launcher:
+    dependency: "direct main"
+    description:
+      name: url_launcher
+      sha256: f6a7e5c4835bb4e3026a04793a4199ca2d14c739ec378fdfe23fc8075d0439f8
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "6.3.2"
+  url_launcher_android:
+    dependency: transitive
+    description:
+      name: url_launcher_android
+      sha256: "767344bf3063897b5cf0db830e94f904528e6dd50a6dfaf839f0abf509009611"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "6.3.28"
+  url_launcher_ios:
+    dependency: transitive
+    description:
+      name: url_launcher_ios
+      sha256: cfde38aa257dae62ffe79c87fab20165dfdf6988c1d31b58ebf59b9106062aad
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "6.3.6"
+  url_launcher_linux:
+    dependency: transitive
+    description:
+      name: url_launcher_linux
+      sha256: d5e14138b3bc193a0f63c10a53c94b91d399df0512b1f29b94a043db7482384a
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "3.2.2"
+  url_launcher_macos:
+    dependency: transitive
+    description:
+      name: url_launcher_macos
+      sha256: "368adf46f71ad3c21b8f06614adb38346f193f3a59ba8fe9a2fd74133070ba18"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "3.2.5"
+  url_launcher_platform_interface:
+    dependency: transitive
+    description:
+      name: url_launcher_platform_interface
+      sha256: "552f8a1e663569be95a8190206a38187b531910283c3e982193e4f2733f01029"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.3.2"
+  url_launcher_web:
+    dependency: transitive
+    description:
+      name: url_launcher_web
+      sha256: "4bd2b7b4dc4d4d0b94e5babfffbca8eac1a126c7f3d6ecbc1a11013faa3abba2"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.4.1"
+  url_launcher_windows:
+    dependency: transitive
+    description:
+      name: url_launcher_windows
+      sha256: "712c70ab1b99744ff066053cbe3e80c73332b38d46e5e945c98689b2e66fc15f"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "3.1.5"
   vector_graphics:
     dependency: transitive
     description:
@@ -493,6 +573,14 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.1.1"
+  win32:
+    dependency: transitive
+    description:
+      name: win32
+      sha256: d7cb55e04cd34096cd3a79b3330245f54cb96a370a1c27adb3c84b917de8b08e
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "5.15.0"
   xdg_directories:
     dependency: transitive
     description:

pubspec.yaml

@@ -14,8 +14,10 @@ dependencies:
   http: ^1.1.0
   shared_preferences: ^2.2.2
   flutter_svg: ^2.0.9
-  intl: ^0.18.1
-  get_it: ^7.6.4
+  intl: ^0.20.2
+  get_it: ^9.2.0
+  url_launcher: ^6.1.0
+  package_info_plus: ^4.0.1
   # 安全相关依赖
   crypto: ^3.0.3        # SHA256等哈希算法
   encrypt: ^5.0.1       # AES加密