opt: 切换页面时销毁播放器组件提升性能

lib/pages/video/detail/view.dart

@@ -61,6 +61,7 @@ class _VideoDetailPageState extends State<VideoDetailPage>
   final Floating floating = Floating();
   // 生命周期监听
   late final AppLifecycleListener _lifecycleListener;
+  bool isShowing = true;
 
   @override
   void initState() {
@@ -216,15 +217,15 @@ class _VideoDetailPageState extends State<VideoDetailPage>
       videoIntroController.isPaused = true;
       plPlayerController!.removeStatusLister(playerListener);
       plPlayerController!.pause();
-      plPlayerController!.danmakuController?.pause();
-      plPlayerController!.danmakuController?.clear();
     }
+    setState(() => isShowing = false);
     super.didPushNext();
   }
 
   @override
   // 返回当前页面时
   void didPopNext() async {
+    setState(() => isShowing = true);
     videoDetailController.isFirstTime = false;
     final bool autoplay = autoPlayEnable;
     videoDetailController.playerInit(autoplay: autoplay);
@@ -354,6 +355,7 @@ class _VideoDetailPageState extends State<VideoDetailPage>
                                     boxConstraints.maxHeight;
                                 return Stack(
                                   children: <Widget>[
+                                    if (isShowing)
                                       FutureBuilder(
                                         future: _futureBuilderFuture,
                                         builder: (BuildContext context,
@@ -363,7 +365,7 @@ class _VideoDetailPageState extends State<VideoDetailPage>
                                             return Obx(
                                               () => !videoDetailController
                                                       .autoPlay.value
-                                                ? const SizedBox()
+                                                  ? nil
                                                   : PLVideoPlayer(
                                                       controller:
                                                           plPlayerController!,