loading 组件背景设为黑色，挡住亮度组件初始化时闪现问题，退出播放器恢复亮度

lib/video.dart

@@ -121,7 +121,8 @@ class GZVideoPlayerState extends State<GZVideoPlayer>
   bool _initialized = false;
 
   /// 屏幕亮度
-  final ValueNotifier<double> _brightness = ValueNotifier(0.5);
+  final ValueNotifier<double> _brightness = ValueNotifier(0.0);
+  late double _originBrightness;
 
   /// 视频音量
   final ValueNotifier<double> _volume = ValueNotifier(0.5);
@@ -221,14 +222,18 @@ class GZVideoPlayerState extends State<GZVideoPlayer>
     /// 常亮
     Wakelock.toggle(enable: true);
     /// 初始化亮度为系统亮度
-    ScreenBrightness().current.then((brightness) {
-      _brightness.value = brightness;
-    });
+    initBrightness();
     /// 倍数按钮标题
     _speedTitle = widget.videoStyle.videoSpeedButtonStyle.title;
     _initPlayer();
   }
 
+  void initBrightness() async {
+    double brightness = await ScreenBrightness().current;
+    _brightness.value = brightness;
+    _originBrightness = brightness;
+  }
+
   @override
   void didUpdateWidget(GZVideoPlayer oldWidget) {
     if (oldWidget.dataSource != widget.dataSource) {
@@ -251,6 +256,7 @@ class GZVideoPlayerState extends State<GZVideoPlayer>
     _subscription.cancel();
     _brightness.dispose();
     _volume.dispose();
+    ScreenBrightness().setScreenBrightness(_originBrightness);
     super.dispose();
   }
 

lib/widget/video_loading_view.dart

@@ -8,27 +8,30 @@ class VideoLoadingView extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return Align(
-      alignment: Alignment.center,
-      child: Center(
-        child: Column(
-          crossAxisAlignment: CrossAxisAlignment.center,
-          mainAxisAlignment: MainAxisAlignment.center,
-          children: <Widget>[
-            loadingStyle.customLoadingIcon,
-            loadingStyle.customLoadingText != null
-                ? loadingStyle.customLoadingText!
-                : Container(
-                    margin: const EdgeInsets.only(top: 10),
-                    child: Text(
-                      loadingStyle.loadingText,
-                      style: TextStyle(
-                        color: loadingStyle.loadingTextFontColor,
-                        fontSize: loadingStyle.loadingTextFontSize,
+    return DecoratedBox(
+      decoration: const BoxDecoration(color: Colors.black),
+      child: Align(
+        alignment: Alignment.center,
+        child: Center(
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.center,
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: <Widget>[
+              loadingStyle.customLoadingIcon,
+              loadingStyle.customLoadingText != null
+                  ? loadingStyle.customLoadingText!
+                  : Container(
+                      margin: const EdgeInsets.only(top: 10),
+                      child: Text(
+                        loadingStyle.loadingText,
+                        style: TextStyle(
+                          color: loadingStyle.loadingTextFontColor,
+                          fontSize: loadingStyle.loadingTextFontSize,
+                        ),
                       ),
-                    ),
-                  )
-          ],
+                    )
+            ],
+          ),
         ),
       ),
     );