opt: videoDetail appbar

lib/pages/video/detail/view.dart

@@ -123,14 +123,7 @@ class _VideoDetailPageState extends State<VideoDetailPage>
   // 流
   appbarStreamListen() {
     appbarStream = StreamController<double>.broadcast();
-    _extendNestCtr.addListener(
+    _extendNestCtr.addListener(_extendNestCtrListener);
-      () {
-        final double offset = _extendNestCtr.position.pixels;
-        vdCtr.sheetHeight.value =
-            Get.size.height - videoHeight - statusBarHeight + offset;
-        appbarStream.add(offset);
-      },
-    );
   }
 
   // 播放器状态监听
@@ -225,6 +218,14 @@ class _VideoDetailPageState extends State<VideoDetailPage>
     statusHeight = await StatusBarControl.getHeight;
   }
 
+  // _extendNestCtr监听
+  void _extendNestCtrListener() {
+    final double offset = _extendNestCtr.position.pixels;
+    vdCtr.sheetHeight.value =
+        Get.size.height - videoHeight - statusBarHeight + offset;
+    appbarStream.add(offset);
+  }
+
   @override
   void dispose() {
     shutdownTimerService.handleWaitingFinished();
@@ -243,6 +244,7 @@ class _VideoDetailPageState extends State<VideoDetailPage>
     appbarStream.close();
     WidgetsBinding.instance.removeObserver(this);
     _lifecycleListener.dispose();
+    _extendNestCtr.removeListener(_extendNestCtrListener);
     super.dispose();
   }
 
@@ -594,6 +596,28 @@ class _VideoDetailPageState extends State<VideoDetailPage>
       );
     }
 
+    Widget buildAppBar(BuildContext context, AsyncSnapshot<num> snapshot) {
+      final double distance =
+          statusBarHeight + MediaQuery.of(context).padding.top;
+      return AppBar(
+        backgroundColor: Colors.black,
+        systemOverlayStyle: Platform.isAndroid
+            ? SystemUiOverlayStyle(
+                statusBarIconBrightness:
+                    Theme.of(context).brightness == Brightness.dark
+                        ? Brightness.light
+                        : (snapshot.data! > distance
+                            ? Brightness.dark
+                            : Brightness.light),
+              )
+            : Theme.of(context).brightness == Brightness.dark
+                ? SystemUiOverlayStyle.light
+                : (snapshot.data! > distance
+                    ? SystemUiOverlayStyle.dark
+                    : SystemUiOverlayStyle.light),
+      );
+    }
+
     Widget childWhenDisabled = SafeArea(
       top: MediaQuery.of(context).orientation == Orientation.portrait &&
           plPlayerController?.isFullScreen.value == true,
@@ -611,11 +635,7 @@ class _VideoDetailPageState extends State<VideoDetailPage>
               child: StreamBuilder(
                 stream: appbarStream.stream.distinct(),
                 initialData: 0,
-                builder: ((context, snapshot) {
+                builder: buildAppBar,
-                  return AppBar(
-                    backgroundColor: Colors.black,
-                  );
-                }),
               ),
             ),
             body: ExtendedNestedScrollView(
@@ -773,7 +793,7 @@ class _VideoDetailPageState extends State<VideoDetailPage>
             builder: ((context, snapshot) {
               return ScrollAppBar(
                 snapshot.data!.toDouble(),
-                () => continuePlay(),
+                continuePlay,
                 playerStatus.value,
                 null,
               );

lib/pages/video/detail/widgets/app_bar.dart

@@ -34,21 +34,16 @@ class ScrollAppBar extends StatelessWidget {
           child: AppBar(
             primary: false,
             centerTitle: true,
-            title: TextButton(
+            title: TextButton.icon(
               onPressed: () => callback(),
-              child: Row(
+              label: Text(
-                mainAxisSize: MainAxisSize.min,
+                playerStatus == PlayerStatus.paused
-                children: [
+                    ? '继续播放'
-                  const Icon(Icons.play_arrow_rounded),
+                    : playerStatus == PlayerStatus.completed
-                  Text(
+                        ? '重新播放'
-                    playerStatus == PlayerStatus.paused
+                        : '播放中',
-                        ? '继续播放'
-                        : playerStatus == PlayerStatus.completed
-                            ? '重新播放'
-                            : '播放中',
-                  )
-                ],
               ),
+              icon: const Icon(Icons.play_arrow_rounded),
             ),
             // actions: [
             //   IconButton(