Question

我创建了一个使用exoplayer来传输mp3音乐的应用程序。除了向通知栏和锁定屏幕添加音乐播放器小部件外，一切正常。我搜索了很多，发现一些建议使用媒体会话的博客文章。但我对这个概念不熟悉。有人可以帮助我将exoplayer与MediaSession连接，并使用相同的方法创建一个小部件。

即使不使用mediasession，也请建议如何使用exoplayer从app创建音乐小部件。链接到git代码或代码示例将非常有用。

这是我的playmusic活动代码，我从Homeactivity调用此方法。

public class PlayMusic {
    private static SimpleExoPlayer mp;
    private static Handler mainHandler;
    private static RenderersFactory renderersFactory;
    private static BandwidthMeter bandwidthMeter;
    private static LoadControl loadControl;
    private static DataSource.Factory dataSourceFactory;
    private static ExtractorsFactory extractorsFactory;
    private static MediaSource mediaSource;
    private static TrackSelection.Factory trackSelectionFactory;
    private static TrackSelector trackSelector;
    private AudioManager audioManager;
    private static final int BUFFER_SEGMENT_SIZE = 128 * 1024;
    private static final int BUFFER_SEGMENT_COUNT = 1024;
    public static final String channel_url = "http://ibadat.out.airtime.pro:8000/ibadat_a";
    public static void preparePlayingSound(Context con, String url) {
        renderersFactory = new DefaultRenderersFactory(con);
        bandwidthMeter = new DefaultBandwidthMeter();
        trackSelectionFactory = new AdaptiveTrackSelection.Factory(bandwidthMeter);
        trackSelector = new DefaultTrackSelector(trackSelectionFactory);
        loadControl = new DefaultLoadControl();
        mp = ExoPlayerFactory.newSimpleInstance(renderersFactory, trackSelector, loadControl);
        dataSourceFactory = new DefaultDataSourceFactory(con, "ExoplayerDemo");
        extractorsFactory = new DefaultExtractorsFactory();
        mainHandler = new Handler();
        mediaSource = new ExtractorMediaSource(Uri.parse(url),
                dataSourceFactory,
                extractorsFactory,
                mainHandler,
                null);
        mp.prepare(mediaSource);
    }
    public static void startPlayingSound(Context con) {

        if (mp != null && mp.getPlayWhenReady())
        {

        } else {
            mp.setPlayWhenReady(true);
            mp.setVolume(1f);

        }
    }
    //and to stop it use this method below
    public static boolean checkStatus(Context con) {
        Boolean flag = false;
        if (mp != null && mp.getPlayWhenReady()) {
            flag = true;
        } else {
            flag = false;
        }
        return flag;
    }
    public static void stopPlayingSound(Context con) {
        if (mp != null && mp.getPlayWhenReady()) {
            mp.stop();
            mp.release();
            mp = null;
        } else {
        }
    }







    public static void setVolume(Context context,Float volume)
    {
        mp.setVolume(volume);
    }


}

Answer 1

根据Android IO指南使用MediaSession是在各种设备上流式传输音乐的最佳方式之一。他们提供了一个示例项目，其实现与您在下面要求使用Exo Player的情况有关link。对于通知和LockScreen播放器，请参阅上述参考中的MediaNotificationManger类。

如何为exoplayer创建音乐播放器小部件？

1 个答案: