**设置Exoplayer版本（2.11.8）：

2020年9月更新日期：**

//Setting Up Exoplayer
private void SetupPlayer(){
        SimpleExoPlayer simpleExoPlayer;
// Create a data source factory.
        dataSourceFactory =
                new DefaultHttpDataSourceFactory(Util.getUserAgent(this
                        , getApplicationInfo().loadLabel(getPackageManager()).toString()));
// Passing Load Control
        loadControl = new DefaultLoadControl.Builder()
                .setBufferDurationsMs(25000, 50000, 1500, 2000).createDefaultLoadControl();

        @DefaultRenderersFactory.ExtensionRendererMode int extensionRendererMode = DefaultRenderersFactory.EXTENSION_RENDERER_MODE_PREFER;

        renderersFactory = new DefaultRenderersFactory(this) .setExtensionRendererMode(extensionRendererMode);

// Create a progressive media source pointing to a stream uri.
         mediaSource = new ProgressiveMediaSource.Factory(dataSourceFactory)
                .createMediaSource(Uri.parse(url_to_stream));
// Create a player instance.
        simpleExoPlayer =  new SimpleExoPlayer.Builder(this,renderersFactory).setLoadControl(loadControl).build();
// Prepare the player with the media source.
        simpleExoPlayer.prepare(mediaSource, true, true);
}

它工作了。你应该使用这个版本：
第一个月

exoPlayer = ExoPlayer.Builder(this).build()
        exoPlayer?.playWhenReady = true
        binding.playerView.player = exoPlayer
        val defaultHttpDataSourceFactory = DefaultHttpDataSource.Factory()
        val mediaItem =
            MediaItem.fromUri(URL)
        val mediaSource =
            HlsMediaSource.Factory(defaultHttpDataSourceFactory).createMediaSource(mediaItem)
        exoPlayer?.setMediaSource(mediaSource)
        exoPlayer?.seekTo(playbackPosition)
        exoPlayer?.playWhenReady = playWhenReady
        exoPlayer?.prepare()