返回按钮手势行为调整

lib/widget/video_top_bar.dart

@@ -45,6 +45,7 @@ class VideoTopBar extends AnimatedWidget {
             children: <Widget>[
               /// 返回按钮
               GestureDetector(
+                behavior: HitTestBehavior.translucent,
                 onTap: onPop,
                 child: videoTopBarStyle.popIcon,
               ),