我正在做媒体播放器，我的网址是.m3u8。我想在simpleexoplayer中玩，但不工作 其他没有扩展名m3u8的网址也可以正常工作。

请帮助我

DefaultRenderersFactory renderersFactory = new DefaultRenderersFactory(
                this,null,DefaultRenderersFactory.EXTENSION_RENDERER_MODE_OFF);
        TrackSelector trackSelector = new DefaultTrackSelector();
        simpleExoPlayer = ExoPlayerFactory.newSimpleInstance(
                renderersFactory,trackSelector);
        String userAgent = Util.getUserAgent(this,"Play Audio");
        ExtractorMediaSource mediaSource = new ExtractorMediaSource(
                Uri.parse(url),// file audio ada di folder assets
                new DefaultDataSourceFactory(this,userAgent),new DefaultExtractorsFactory(),null);



        simpleExoPlayer.prepare(mediaSource);
        simpleExoPlayer.setPlayWhenReady(true);