Flutter v1，android音视频框架

Flutter提供了一个名为video\_player的插件，可以用来播放视频。对于音频，Flutter同样提供了一个名为audio_player的插件。

以下是使用video_player和audio_player插件的示例代码：

首先，在pubspec.yaml文件中添加依赖：

dependencies:
  flutter:
    sdk: flutter
  video_player:
  audio_player:

然后，你可以使用以下代码来播放视频和音频：

import 'package:flutter/material.dart';
import 'package:video_player/video_player.dart';
import 'package:audio_player/audio_player.dart';
 
void main() => runApp(MyApp());
 
class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: VideoAudioPage(),
    );
  }
}
 
class VideoAudioPage extends StatefulWidget {
  @override
  _VideoAudioPageState createState() => _VideoAudioPageState();
}
 
class _VideoAudioPageState extends State<VideoAudioPage> {
  VideoPlayerController _videoPlayerController;
  AudioPlayer _audioPlayer;
 
  @override
  void initState() {
    super.initState();
    _videoPlayerController = VideoPlayerController.network(
        'https://flutter.github.io/assets-for-api-docs/assets/videos/butterfly.mp4')
      ..initialize().then((_) {
        // Ensure the first frame is shown after the video is initialized, even before the play button has been pressed.
        setState(() {});
      });
 
    _audioPlayer = AudioPlayer();
    if (null != _videoPlayerController.value.initialized) {
      _audioPlayer.setUrl(_videoPlayerController.dataSource);
    }
  }
 
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Stack(