Bagaimana cara menjaga keadaan widget saya setelah menggulir? berdebar

You can use AutomaticKeepAliveClientMixin of yout class widget to prevent your items to be 
disposed when scrolled.

class _widgetState extends State<MyVideoPlayer> with AutomaticKeepAliveClientMixin { ...
//implement with
 @override
  bool get wantKeepAlive => true;
LightBolt