修复用户端订单列表生命周期与刷新

apps/user_app/lib/app/router.dart

@@ -9,7 +9,6 @@ import '../ui/features/home/home_page.dart';
 import '../ui/features/orders/orders_page.dart';
 import '../ui/features/profile/profile_page.dart';
 import '../ui/features/shared/record_list_page.dart';
-import '../ui/features/shared/record_list_view_model.dart';
 import '../ui/features/shop/shop_page.dart';
 import 'auth_navigation.dart';
 import 'dependencies.dart';
@@ -56,7 +55,8 @@ GoRouter createRouter(
       builder: (context, state) => RecordListPage(
         title: '供气合同',
         eyebrow: '可信履约',
-        viewModel: RecordListViewModel(dependencies.repository.contracts),
+        sourceKey: 'contracts',
+        loader: dependencies.repository.contracts,
       ),
     ),
     GoRoute(
@@ -64,7 +64,8 @@ GoRouter createRouter(
       builder: (context, state) => RecordListPage(
         title: '钱包流水',
         eyebrow: '资金记录',
-        viewModel: RecordListViewModel(dependencies.repository.walletRecords),
+        sourceKey: 'wallet_records',
+        loader: dependencies.repository.walletRecords,
       ),
     ),
     StatefulShellRoute.indexedStack(

apps/user_app/lib/ui/features/orders/orders_page.dart

@@ -9,13 +9,21 @@ import '../../../data/services/api_client.dart';
 import '../../../data/services/payment_launcher.dart';
 import '../../../domain/models/client_models.dart';
 import '../shared/record_list_page.dart';
-import '../shared/record_list_view_model.dart';
 
-class OrdersPage extends StatelessWidget {
-  OrdersPage({required this.repository, super.key});
+class OrdersPage extends StatefulWidget {
+  const OrdersPage({required this.repository, super.key});
 
   final ClientRepository repository;
+
+  @override
+  State<OrdersPage> createState() => _OrdersPageState();
+}
+
+class _OrdersPageState extends State<OrdersPage> {
   final PaymentLauncher _launcher = PaymentLauncher();
+  int _shopRefreshToken = 0;
+  int _gasRefreshToken = 0;
+  int _refundRefreshToken = 0;
 
   Future<void> _openActions(
     BuildContext context,
@@ -61,7 +69,7 @@ class OrdersPage extends StatelessWidget {
         final reason = await _reason(context);
         if (reason == null || !context.mounted) return;
         final rawItems = record.raw['items'] as List? ?? const [];
-        await repository.createRefund(
+        await widget.repository.createRefund(
           business: business,
           identity: record.identity,
           requestNo: const Uuid().v7(),
@@ -75,13 +83,21 @@ class OrdersPage extends StatelessWidget {
           }).toList(),
         );
         if (context.mounted) {
+          setState(() {
+            if (business == 'shop') {
+              _shopRefreshToken += 1;
+            } else {
+              _gasRefreshToken += 1;
+            }
+            _refundRefreshToken += 1;
+          });
           ScaffoldMessenger.of(context).showSnackBar(
             const SnackBar(content: Text('退款申请已提交')),
           );
         }
         return;
       }
-      final payment = await repository.payOrder(
+      final payment = await widget.repository.payOrder(
         business: business,
         identity: record.identity,
         requestNo: const Uuid().v7(),
@@ -106,29 +122,10 @@ class OrdersPage extends StatelessWidget {
   }
 
   Future<String?> _reason(BuildContext context) async {
-    final controller = TextEditingController();
     final value = await showDialog<String>(
       context: context,
-      builder: (context) => AlertDialog(
-        title: const Text('申请退款'),
-        content: TextField(
-          controller: controller,
-          maxLines: 3,
-          decoration: const InputDecoration(labelText: '退款原因'),
-        ),
-        actions: [
-          TextButton(
-            onPressed: () => Navigator.pop(context),
-            child: const Text('取消'),
-          ),
-          FilledButton(
-            onPressed: () => Navigator.pop(context, controller.text.trim()),
-            child: const Text('提交'),
-          ),
-        ],
-      ),
+      builder: (context) => const _RefundReasonDialog(),
     );
-    controller.dispose();
     return value?.isEmpty == true ? null : value;
   }
 
@@ -150,37 +147,86 @@ class OrdersPage extends StatelessWidget {
       body: TabBarView(
         children: [
           RecordListPage(
+            key: const PageStorageKey('shop_orders'),
             title: '商城订单',
             eyebrow: '交易',
             description: '查看商城订单并处理待支付或退款事项',
             embedded: true,
-            viewModel: RecordListViewModel(repository.shopOrders),
+            sourceKey: 'shop_orders',
+            loader: widget.repository.shopOrders,
+            refreshToken: _shopRefreshToken,
             onRecordTap: (record) => _openActions(context, record, 'shop'),
           ),
           RecordListPage(
+            key: const PageStorageKey('gas_orders'),
             title: '供气订单',
             eyebrow: '履约',
             description: '查看供气订单与当前履约状态',
             embedded: true,
-            viewModel: RecordListViewModel(repository.gasOrders),
+            sourceKey: 'gas_orders',
+            loader: widget.repository.gasOrders,
+            refreshToken: _gasRefreshToken,
             onRecordTap: (record) => _openActions(context, record, 'gas'),
           ),
           RecordListPage(
+            key: const PageStorageKey('refunds'),
             title: '退款记录',
             eyebrow: '资金',
             description: '退款结果以服务端审核和资金流水为准',
             embedded: true,
-            viewModel: RecordListViewModel(repository.refunds),
+            sourceKey: 'refunds',
+            loader: widget.repository.refunds,
+            refreshToken: _refundRefreshToken,
           ),
           RecordListPage(
+            key: const PageStorageKey('tickets'),
             title: '服务工单',
             eyebrow: '服务',
             description: '查看维修、安装与其他服务工单',
             embedded: true,
-            viewModel: RecordListViewModel(repository.tickets),
+            sourceKey: 'tickets',
+            loader: widget.repository.tickets,
           ),
         ],
       ),
     ),
   );
 }
+
+/// 独立管理退款原因输入框生命周期，避免关闭动画期间提前释放控制器。
+class _RefundReasonDialog extends StatefulWidget {
+  const _RefundReasonDialog();
+
+  @override
+  State<_RefundReasonDialog> createState() => _RefundReasonDialogState();
+}
+
+class _RefundReasonDialogState extends State<_RefundReasonDialog> {
+  final TextEditingController _controller = TextEditingController();
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) => AlertDialog(
+    title: const Text('申请退款'),
+    content: TextField(
+      controller: _controller,
+      maxLines: 3,
+      decoration: const InputDecoration(labelText: '退款原因'),
+    ),
+    actions: [
+      TextButton(
+        onPressed: () => Navigator.pop(context),
+        child: const Text('取消'),
+      ),
+      FilledButton(
+        onPressed: () => Navigator.pop(context, _controller.text.trim()),
+        child: const Text('提交'),
+      ),
+    ],
+  );
+}

apps/user_app/lib/ui/features/shared/record_list_page.dart

@@ -8,45 +8,66 @@ class RecordListPage extends StatefulWidget {
   const RecordListPage({
     required this.title,
     required this.eyebrow,
-    required this.viewModel,
+    required this.sourceKey,
+    required this.loader,
     this.description,
     this.floatingActionButton,
     this.onRecordTap,
     this.embedded = false,
+    this.refreshToken = 0,
     super.key,
   });
 
   final String title;
   final String eyebrow;
   final String? description;
-  final RecordListViewModel viewModel;
+  final String sourceKey;
+  final RecordLoader loader;
   final Widget? floatingActionButton;
   final ValueChanged<ClientRecord>? onRecordTap;
   final bool embedded;
+  final int refreshToken;
 
   @override
   State<RecordListPage> createState() => _RecordListPageState();
 }
 
-class _RecordListPageState extends State<RecordListPage> {
+class _RecordListPageState extends State<RecordListPage>
+    with AutomaticKeepAliveClientMixin<RecordListPage> {
+  late RecordListViewModel _viewModel;
+
   @override
   void initState() {
     super.initState();
-    widget.viewModel.load();
+    _viewModel = RecordListViewModel(widget.loader)..load();
+  }
+
+  @override
+  void didUpdateWidget(covariant RecordListPage oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    if (widget.sourceKey != oldWidget.sourceKey) {
+      _viewModel.dispose();
+      _viewModel = RecordListViewModel(widget.loader)..load();
+      return;
+    }
+    if (widget.refreshToken != oldWidget.refreshToken) {
+      _viewModel.load();
+    }
   }
 
   @override
   void dispose() {
-    widget.viewModel.dispose();
+    _viewModel.dispose();
     super.dispose();
   }
 
   @override
   Widget build(BuildContext context) {
+    super.build(context);
     final content = ListenableBuilder(
-      listenable: widget.viewModel,
+      listenable: _viewModel,
       builder: (context, _) {
-        final state = widget.viewModel;
+        final state = _viewModel;
         if (state.loading && state.records.isEmpty) {
           return const Center(child: CircularProgressIndicator());
         }
@@ -123,4 +144,7 @@ class _RecordListPageState extends State<RecordListPage> {
       body: content,
     );
   }
+
+  @override
+  bool get wantKeepAlive => true;
 }

apps/user_app/lib/ui/features/shared/record_list_view_model.dart

@@ -14,23 +14,46 @@ class RecordListViewModel extends ChangeNotifier {
   List<ClientRecord> _records = const [];
   Object? _error;
   bool _loading = false;
+  bool _disposed = false;
+  int _requestGeneration = 0;
 
   List<ClientRecord> get records => List.unmodifiable(_records);
   Object? get error => _error;
   bool get loading => _loading;
 
   Future<void> load() async {
+    final generation = ++_requestGeneration;
     _loading = true;
     _error = null;
-    notifyListeners();
+    _notifyIfActive();
     try {
-      _records = await _loader();
+      final records = await _loader();
+      if (!_isCurrent(generation)) return;
+      _records = records;
     } catch (error) {
+      if (!_isCurrent(generation)) return;
       // 会话失效由统一路由接管，不在列表中重复展示网络错误。
       if (error is! SessionExpiredException) _error = error;
     } finally {
-      _loading = false;
-      notifyListeners();
+      if (_isCurrent(generation)) {
+        _loading = false;
+        _notifyIfActive();
+      }
     }
   }
+
+  /// 仅允许最后一次请求且组件仍存活时写入状态。
+  bool _isCurrent(int generation) => !_disposed && generation == _requestGeneration;
+
+  /// 避免异步请求在页面销毁后继续通知监听器。
+  void _notifyIfActive() {
+    if (!_disposed) notifyListeners();
+  }
+
+  @override
+  void dispose() {
+    _disposed = true;
+    _requestGeneration += 1;
+    super.dispose();
+  }
 }

apps/user_app/test/ui/orders_page_test.dart

@@ -0,0 +1,97 @@
+// 功能描述：验证订单退款成功后的跨标签刷新行为。
+// 版本：1.0.0
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:user_app/data/repositories/client_repository.dart';
+import 'package:user_app/data/services/api_client.dart';
+import 'package:user_app/domain/models/client_models.dart';
+import 'package:user_app/ui/features/orders/orders_page.dart';
+
+/// 提供无需网络的订单数据并记录各列表刷新次数。
+class _FakeRepository extends ClientRepository {
+  _FakeRepository() : super(ApiClient(() => '', baseUrl: 'https://api.example.com'));
+
+  int shopCalls = 0;
+  int gasCalls = 0;
+  int refundCalls = 0;
+  int ticketCalls = 0;
+  int createRefundCalls = 0;
+
+  @override
+  Future<List<ClientRecord>> shopOrders() async {
+    shopCalls += 1;
+    return const [
+      ClientRecord(
+        identity: 'shop-1',
+        title: '商城订单一',
+        subtitle: '',
+        status: 18,
+        raw: {
+          'items': [
+            {'identity': 'item-1', 'quantity': 1},
+          ],
+        },
+      ),
+    ];
+  }
+
+  @override
+  Future<List<ClientRecord>> gasOrders() async {
+    gasCalls += 1;
+    return const [];
+  }
+
+  @override
+  Future<List<ClientRecord>> refunds() async {
+    refundCalls += 1;
+    return const [];
+  }
+
+  @override
+  Future<List<ClientRecord>> tickets() async {
+    ticketCalls += 1;
+    return const [];
+  }
+
+  @override
+  Future<void> createRefund({
+    required String business,
+    required String identity,
+    required String requestNo,
+    required String reason,
+    required List<Map<String, Object?>> items,
+  }) async {
+    createRefundCalls += 1;
+  }
+}
+
+void main() {
+  testWidgets('退款成功后刷新商城订单和退款记录', (tester) async {
+    final repository = _FakeRepository();
+    await tester.pumpWidget(
+      MaterialApp(home: OrdersPage(repository: repository)),
+    );
+    await tester.pumpAndSettle();
+
+    await tester.tap(find.text('退款'));
+    await tester.pumpAndSettle();
+    expect(repository.refundCalls, 1);
+
+    await tester.tap(find.text('商城'));
+    await tester.pumpAndSettle();
+    expect(repository.shopCalls, 1);
+
+    await tester.tap(find.text('商城订单一'));
+    await tester.pumpAndSettle();
+    await tester.tap(find.text('申请退款'));
+    await tester.pumpAndSettle();
+    await tester.enterText(find.byType(TextField), '商品问题');
+    await tester.tap(find.text('提交'));
+    await tester.pumpAndSettle();
+
+    expect(repository.createRefundCalls, 1);
+    expect(repository.shopCalls, 2);
+    expect(repository.refundCalls, 2);
+    expect(tester.takeException(), isNull);
+  });
+}

apps/user_app/test/ui/record_list_page_test.dart

@@ -0,0 +1,45 @@
+// 功能描述：验证记录列表在父组件重建和刷新标记变化时的生命周期。
+// 版本：1.0.0
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:user_app/domain/models/client_models.dart';
+import 'package:user_app/ui/features/shared/record_list_page.dart';
+
+void main() {
+  testWidgets('普通重建不重复请求，刷新标记变化才重新加载', (tester) async {
+    var calls = 0;
+    var refreshToken = 0;
+    late StateSetter rebuild;
+    Future<List<ClientRecord>> loader() async {
+      calls += 1;
+      return const [];
+    }
+
+    await tester.pumpWidget(
+      MaterialApp(
+        home: StatefulBuilder(
+          builder: (context, setState) {
+            rebuild = setState;
+            return RecordListPage(
+              title: '测试列表',
+              eyebrow: '测试',
+              sourceKey: 'records',
+              loader: loader,
+              refreshToken: refreshToken,
+            );
+          },
+        ),
+      ),
+    );
+    await tester.pumpAndSettle();
+    expect(calls, 1);
+
+    rebuild(() {});
+    await tester.pumpAndSettle();
+    expect(calls, 1);
+
+    rebuild(() => refreshToken += 1);
+    await tester.pumpAndSettle();
+    expect(calls, 2);
+  });
+}

apps/user_app/test/ui/record_list_view_model_test.dart

@@ -0,0 +1,52 @@
+// 功能描述：验证记录列表异步请求的代次与销毁保护。
+// 版本：1.0.0
+import 'dart:async';
+
+import 'package:flutter_test/flutter_test.dart';
+import 'package:user_app/domain/models/client_models.dart';
+import 'package:user_app/ui/features/shared/record_list_view_model.dart';
+
+ClientRecord _record(String identity) => ClientRecord(
+  identity: identity,
+  title: identity,
+  subtitle: '',
+  raw: const {},
+);
+
+void main() {
+  test('后发请求优先，旧结果不会覆盖新数据', () async {
+    final first = Completer<List<ClientRecord>>();
+    final second = Completer<List<ClientRecord>>();
+    var calls = 0;
+    final viewModel = RecordListViewModel(() {
+      calls += 1;
+      return calls == 1 ? first.future : second.future;
+    });
+
+    final firstLoad = viewModel.load();
+    final secondLoad = viewModel.load();
+    second.complete([_record('new')]);
+    await secondLoad;
+    first.complete([_record('old')]);
+    await firstLoad;
+
+    expect(viewModel.records.single.identity, 'new');
+    expect(viewModel.loading, isFalse);
+    viewModel.dispose();
+  });
+
+  test('销毁后异步结果不会继续通知监听器', () async {
+    final pending = Completer<List<ClientRecord>>();
+    final viewModel = RecordListViewModel(() => pending.future);
+    var notifications = 0;
+    viewModel.addListener(() => notifications += 1);
+
+    final load = viewModel.load();
+    expect(notifications, 1);
+    viewModel.dispose();
+    pending.complete([_record('late')]);
+    await load;
+
+    expect(notifications, 1);
+  });
+}