我的回应有点晚,但我希望它能帮助未来的疑虑。
在你Service.java
case MEDIA_ID_ROOT:
for (MediaMetadataCompat track : mMusicProvider.getAllMusics()) {
String mediaId = track.getDescription().getMediaId();
//Artist song
String title = String.valueOf(track.getDescription().getTitle());
//Artist name
String subTitle = String.valueOf(track.getDescription().getSubtitle());
//Artist album
String descriptin = String.valueOf(track.getDescription().getDescription());
//Song duration
Long duration = track.getLong(MediaMetadataCompat.METADATA_KEY_DURATION);
Bundle songDuration = new Bundle();
songDuration.putLong(MediaMetadataCompat.METADATA_KEY_DURATION, duration);
MediaDescriptionCompat desc =
new MediaDescriptionCompat.Builder()
.setMediaId(mediaId)
.setTitle(title)
.setSubtitle(subTitle)
.setDescription(descriptin)
.setExtras(songDuration)
.build();
MediaBrowserCompat.MediaItem songList =
new MediaBrowserCompat.MediaItem(desc,
MediaBrowserCompat.MediaItem.FLAG_PLAYABLE);
mediaItems.add(songList);
}
break;
mMusicProvider是我的模型
的对象在你的provider.java
// Categorized caches for music track data:
private final LinkedHashMap<String, MediaMetadataCompat> mMusicListById;
public Iterable<MediaMetadataCompat> getAllMusics() {
if (mCurrentState != State.INITIALIZED || mMusicListById.isEmpty()) {
return Collections.emptyList();
}
return mMusicListById.values();
}
的MediaBrowserCompat.MediaItem基本上可以MediaId,标题, Subtitle,Description,IconBitmap,IconUri,Bundle。在我的情况下,我需要歌曲的持续时间,这就是为什么我作为一个额外的捆绑添加。您可以添加更多演员,如作曲家,年份,曲目编号等。
如果您不需要任何额外信息,则可以调用getdescription()。
for (MediaMetadataCompat track : mMusicProvider.getAllMusics()) {
MediaBrowserCompat.MediaItem bItem =
new MediaBrowserCompat.MediaItem(track.getDescription(),
MediaBrowserCompat.MediaItem.FLAG_PLAYABLE);
mediaItems.add(bItem);