iOS 退出播放器恢复竖屏

lib/video.dart

@@ -233,6 +233,7 @@ class GZVideoPlayerState extends State<GZVideoPlayer>
     if (widget.restoreVertical) {
       if (Platform.isIOS) {
         GzOrientation.forceOrientation(DeviceOrientation.portraitUp);
+        GzOrientation.setPreferredOrientations([DeviceOrientation.portraitUp]);
       } else {
         SystemChrome.setPreferredOrientations([DeviceOrientation.portraitUp]);
       }