TXLivePlayerController controller = TXLivePlayerController();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('直播'),
      ),
      body: SafeArea(
        child: Column(
          children: [
            Container(
              height: 150,
              color: Colors.black,
              child: Center(
                child: _aspectRatio>0?AspectRatio(
                  aspectRatio: _aspectRatio,
                  child: TXPlayerVideo(
                    onRenderViewCreatedListener: (viewId) {
                      _controller.setPlayerView(viewId);
                    },
                  ),
                ):Container(),
              ),
            ),],
        ),
      ),
    );
  }

String flvUrl = "http://liteavapp.qcloud.com/live/liteavdemoplayerstreamid_demo1080p.flv";
await _controller.startLivePlay(flvUrl);
// 如果你使用的是 12.0 的以下版本，需要传入 playType，示例如下：
await _controller.startLivePlay(flvUrl, playType: TXPlayType.LIVE_FLV);

// 暂停
_controller.pause();
// 恢复
_controller.resume();

// 停止播放
_controller.stop();

_controller.onPlayerEventBroadcast.listen((event) {//订阅事件分发
  if(event["event"] == 2012) {
      String msg = event["EVT_GET_MSG"];
  }
});

// 正在播放的是流http://5815.liveplay.myqcloud.com/live/5815_62fe94d692ab11e791eae435c87f075e.flv，
// 现切换到码率为 900kbps 的新流上
_controller.switchStream("http://5815.liveplay.myqcloud.com/live/5815_62fe94d692ab11e791eae435c87f075e_900.flv");

// 暂停
_controller.pause();
// 继续
_controller.resume();

_controller.onPlayerEventBroadcast.listen((event) {
  if (event["event"] == TXVodPlayEvent.PLAY_EVT_GET_MESSAGE) {
    String msg = event[TXVodPlayEvent.EVT_GET_MSG];
  } else if (event["event"] == TXVodPlayEvent.PLAY_ERR_NET_DISCONNECT) {
    print("网络断开，拉流失败");
  }
});

// 正在播放的是流 http://5815.liveplay.myqcloud.com/live/5815_62fe94d692ab11e791eae435c87f075e.flv，
// 现切换到码率为900kbps的新流上
_controller.switchStream("http://5815.liveplay.myqcloud.com/live/5815_62fe94d692ab11e791eae435c87f075e_900.flv");

_playerController.enterPictureInPictureMode(
    backIconForAndroid: backIconForAndroid,
    playIconForAndroid: playIconForAndroid,
    pauseIconForAndroid: pauseIconForAndroid,
    forwardIconForAndroid: forwardIconForAndroid);

  controller.setPlayerView(viewId);

  _controller.setRenderMode(FTXPlayerRenderMode.ADJUST_RESOLUTION);