fix(player): 保持推荐页返回时播放状态

lib/pages/recommend/recommend_page.dart

@@ -46,11 +46,15 @@ class RecommendPage extends StatefulWidget {
   State<RecommendPage> createState() => _RecommendPageState();
 }
 
-class _RecommendPageState extends State<RecommendPage> {
+class _RecommendPageState extends State<RecommendPage>
+    with AutomaticKeepAliveClientMixin<RecommendPage> {
   RecommendInnerTab _tab = RecommendInnerTab.feed;
   final PageController _pageController = PageController();
   int _scrubCancelRequest = 0;
 
+  @override
+  bool get wantKeepAlive => true;
+
   @override
   void initState() {
     super.initState();
@@ -85,6 +89,7 @@ class _RecommendPageState extends State<RecommendPage> {
 
   @override
   Widget build(BuildContext context) {
+    super.build(context);
     final categories = context.read<CategoryController>();
     return ColoredBox(
       key: const Key('recommend-page'),

test/player/player_fullscreen_test.dart

@@ -21,6 +21,7 @@ import 'package:fruitshorts/core/theme/app_colors.dart';
 import 'package:fruitshorts/pages/auth/auth_view.dart';
 import 'package:fruitshorts/pages/player/player_view.dart';
 import 'package:fruitshorts/pages/player/widgets/player_center_toggle.dart';
+import 'package:fruitshorts/pages/player/widgets/player_render_stack.dart';
 import 'package:fruitshorts/pages/player/widgets/seek_progress_bar.dart';
 
 import '../support/fake_catalog.dart';
@@ -82,6 +83,47 @@ void main() {
     _expectPlayerNavigationBar(tester);
   });
 
+  testWidgets('should_preserve_recommend_feed_when_full_player_pops', (
+    tester,
+  ) async {
+    await _pumpApp(tester);
+    await tester.tap(find.byKey(const Key('tab-recommend')));
+    await tester.pumpAndSettle();
+
+    final recommendPlayer = find.byKey(
+      const Key('recommend-feed-player'),
+    );
+    final renderStack = find.descendant(
+      of: recommendPlayer,
+      matching: find.byType(PlayerRenderStack),
+    );
+    expect(recommendPlayer, findsOneWidget);
+    expect(renderStack, findsOneWidget);
+    final playerState = tester.state(recommendPlayer);
+    final renderState = tester.state(renderStack);
+
+    await tester.tap(find.byKey(const Key('home-feed-full-series')));
+    await tester.pumpAndSettle();
+    expect(
+      tester.widget<PlayerPage>(find.byType(PlayerPage).last).homeMode,
+      isFalse,
+    );
+
+    tester.state<NavigatorState>(find.byType(Navigator).first).pop();
+    await tester.pump();
+
+    expect(find.byKey(const Key('recommend-page')), findsOneWidget);
+    expect(recommendPlayer, findsOneWidget);
+    expect(renderStack, findsOneWidget);
+    expect(tester.state(recommendPlayer), same(playerState));
+    expect(tester.state(renderStack), same(renderState));
+    expect(find.byKey(const Key('recommend-feed-skeleton')), findsNothing);
+
+    await tester.pumpAndSettle();
+    expect(tester.state(recommendPlayer), same(playerState));
+    expect(tester.state(renderStack), same(renderState));
+  });
+
   testWidgets('should_render_player_loading_indicators_at_compact_size', (
     tester,
   ) async {