flutter 獲取視頻縮略圖

在 Flutter 裏官方提供了一個 video_player插件可以播放視頻。

先安裝依賴：

dependencies:
   video_player: ^0.10.1+6

class _ShootIssuePageState extends State<ShootIssuePage> {
  VideoPlayerController _controller;
  Future _initializeVideoPlayerFuture;

  @override
  void initState() {
    super.initState();
    _controller = VideoPlayerController.file(文件);
    _controller.setLooping(true);
    _initializeVideoPlayerFuture = _controller.initialize();
  }

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

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: FutureBuilder(//顯示縮略圖
        future: _initializeVideoPlayerFuture,
        builder: (context, snapshot) {
          print(snapshot.connectionState);
          if (snapshot.hasError) print(snapshot.error);
          if (snapshot.connectionState == ConnectionState.done) {
            return AspectRatio(
              aspectRatio: 1 / 1,
//                      aspectRatio: _controller.value.aspectRatio,
              child: VideoPlayer(_controller),
            );
          } else {
            return Center(
              child: CircularProgressIndicator(),
            );
          }
        },
      ),
    );
  }
}