当我运行当前代码时…我得到这个错误：

UnimplementedError (UnimplementedError: init() has not been implemented.)

• 在手机上显示所有非常减速显示，但没有发现错误！*
  编码：

final videos = [
  'assets/videos/Frozen_Flower_In_Ice_1402.mp4',
  'assets/videos/Main_EarthPlanet.mp4',
];

class VideosScreen extends StatefulWidget {
  const VideosScreen({super.key});

  @override
  State<VideosScreen> createState() => _VideosScreenState();
}

class _VideosScreenState extends State<VideosScreen> {
  late PageController _pageController;

  @override
  void initState() {
    super.initState();
    _pageController = PageController(viewportFraction: 0.8);
  }

  @override
  void dispose() {
    _pageController.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return PageView.builder(
      controller: _pageController,
      itemCount: videos.length,
      itemBuilder: (context, index) {
        return VideoCard(
          assetPath: videos[index],
        );
      },
    );
  }
}

class VideoCard extends StatefulWidget {
  const VideoCard({
    super.key,
    required this.assetPath,
  });

  final String assetPath;

  @override
  State<VideoCard> createState() => _VideoCardState();
}

class _VideoCardState extends State<VideoCard> {
  late VideoPlayerController _controller;

  @override
  void initState() {
    super.initState();
    _controller = VideoPlayerController.asset(widget.assetPath);

    _controller
      ..addListener(() => setState(() {}))
      ..setLooping(true)
      ..setVolume(0)
      ..initialize().then((_) => setState(() {}))
      ..play();
  }

  @override
  void dispose() {
    _controller.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return AnimatedContainer(
      duration: const Duration(milliseconds: 250),
      margin: const EdgeInsets.symmetric(vertical: 32, horizontal: 16),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(16),
        boxShadow: [
          BoxShadow(
            color: Colors.black.withOpacity(0.3),
            offset: const Offset(0, 6),
            blurRadius: 8,
          ),
        ],
      ),
      child: ClipRRect(
        borderRadius: BorderRadius.circular(16),
        child: AspectRatio(
          aspectRatio: _controller.value.aspectRatio,
          child: VideoPlayer(_controller),
        ),
      ),
    );
  }
}

在视频错误不！
还有...当我在Chrome中启动应用程序时...应用程序不减速显示在显示器上，因为在手机中，虽然ram内存过剩.
设置持续时间和重写的代码和较低的fps...没有任何帮助。