如何：停止 ListView 重建 video_player 小部件？

Question

我已经设法让视频在 flutter-web 上播放，但是，当我在 ListView 中滚动视频时 rebuild/reload。

滚动时如何阻止 video_player（在 ListView 中）被重建？

抱歉，代码示例太长了。我不确定如何进一步压缩它

任何帮助都会很棒！谢谢

import 'package:flutter/material.dart';
import '../../widgets/video/chewie_video.dart';
import 'package:video_player/video_player.dart';

class TestPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: ListView(
        children: <Widget>[
          Container(height: 1000),
          Center(
            child: ChewieVideo(
              videoPlayerController:
                  VideoPlayerController.asset('assets/video.mp4'),
            ),
          ),
          Container(height: 1000),
        ],
      ),
    );
  }
}

import 'package:chewie/chewie.dart';
import 'package:flutter/material.dart';
import 'package:video_player/video_player.dart';

class ChewieVideo extends StatefulWidget {
  final VideoPlayerController videoPlayerController;
  final bool looping;

  ChewieVideo({
    @required this.videoPlayerController,
    this.looping,
    Key key,
  }) : super(key: key);

  @override
  _ChewieVideoState createState() => _ChewieVideoState();
}

class _ChewieVideoState extends State<ChewieVideo> {
  ChewieController _chewieController;

  @override
  void initState() {
    super.initState();
    _chewieController = ChewieController(
      videoPlayerController: widget.videoPlayerController,
      autoInitialize: true,
      aspectRatio: 16 / 9,
      looping: widget.looping,
      errorBuilder: (context, errorMessage) {
        return Center(
          child: Text(
            errorMessage,
            style: TextStyle(color: Colors.white),
          ),
        );
      },
    );
  }

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.all(8.0),
      child: Chewie(
        controller: _chewieController,
      ),
    );
  }

  @override
  void dispose() {
    super.dispose();
    widget.videoPlayerController.dispose();
    _chewieController.dispose();
  }
}

Answer 1

我不确定这是一个很好的修复还是只是临时修复，但这就是我设法让它工作的方式...

如果您在 ListView/CustomScrollView 内部使用，则需要为这些小部件中的任何一个调整 cacheExtent...我已将我的设置为 1000。

我不太确定发生了什么，但它有效...

class HomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: primaryBlack,
      drawer: NavDrawer(),
      body: Scrollbar(
        child: CustomScrollView(
          cacheExtent: 1000,
          slivers: <Widget>[

...

在完成那个 chewie 之后，video_player 插件不应该 rebuild/refresh 在 ListView

中

如何：停止 ListView 重建 video_player 小部件？

How to: Stop ListView from rebuilding video_player widget?

dart

flutter

flutter-web