flutter - 如何检查远程广播并修复 Flutter 中视频播放器咀嚼的错误？

Question

我的英文不是很好，准备了一个IP看电视直播的应用程序，有广播，没有问题，我看广播，切换到另一个广播时，在没有来的广播上崩溃。

我想在这里写的代码中检查传入的发布，这样发布没有来的时候不报错，返回主页或者可以写在文章中，就好像这个发布不存在一样。谢谢

class ChewieVideo extends GetxController {
  final String videoData;
  ChewieVideo({required this.videoData});

  late VideoPlayerController videoPlayerController;
  ChewieController? chewieController;

  @override
  void onClose() {
    super.onClose();
    videoPlayerController.dispose();
    chewieController!.dispose();
  }

  @override
  void onInit() {
    super.onInit();
    initializePlayer();
  }

  Future<void> initializePlayer() async {
    videoPlayerController = VideoPlayerController.network(videoData);

    await Future.wait([videoPlayerController.initialize()]);

    chewieController = (ChewieController(
        videoPlayerController: videoPlayerController,
        autoPlay: true,
        looping: true,
        materialProgressColors: ChewieProgressColors(
          playedColor: Colors.red,
          handleColor: Colors.cyanAccent,
          backgroundColor: Colors.yellow,
          bufferedColor: Colors.lightGreen,
        ),
        placeholder: Container(
          color: Colors.white,
        ),
        autoInitialize: true,
        errorBuilder: (context, errorMessage) {
          return Center(
            child: Padding(
              padding: EdgeInsets.all(8.0),
              child: Text(
                errorMessage,
                style: TextStyle(color: white),
              ),
            ),
          );
        }));
    update();
  }
}

class VideoApp extends StatefulWidget {
  const VideoApp(
      {Key? key, required this.videoData, required this.channelLoading})
      : super(key: key);
  final String videoData;
  final String channelLoading;

  @override
  State<VideoApp> createState() => _VideoAppState();
}

class _VideoAppState extends State<VideoApp> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Column(
        children: [
          GetBuilder<ChewieVideo>(
            init: ChewieVideo(videoData: widget.videoData),
            builder: (controller) => Expanded(
              child: Center(
                child: controller.chewieController != null &&
                        controller.chewieController!.videoPlayerController.value
                            .isInitialized
                    ? Chewie(controller: controller.chewieController!)
                    : Column(
                        mainAxisAlignment: MainAxisAlignment.center,
                        children: [
                          CircularProgressIndicator(),
                          SizedBox(height: 10),
                          Text(
                            '${widget.channelLoading}=> Yükleniyor',
                            style: TextStyle(fontSize: 20),
                          ),
                        ],
                      ),
              ),
            ),
          ),
        ],
      ),
    );
  }
}