通过 A2DP/AVRCP 发送曲目信息 [英] send track informations via A2DP/AVRCP

问题描述

我正在尝试通过 A2DP/AVRCP 发送曲目信息.现在，音乐是完美的流式传输，但在接收器"(即:汽车音响)上，曲目信息屏幕"是空白的(使用流行的播放器并非如此).有什么想法吗?

I'm trying to send track informations via A2DP/AVRCP. Right now, music is perfectly streamed, but on the "receiver" (ie: car audio), the "track informations screen" is blank (which is not the case using popular players out there). Any idea ?

推荐答案

这段代码对我有用:

private static final String AVRCP_PLAYSTATE_CHANGED = "com.android.music.playstatechanged";
private static final String AVRCP_META_CHANGED = "com.android.music.metachanged";

private void bluetoothNotifyChange(String what) {
    Intent i = new Intent(what);
    i.putExtra("id", Long.valueOf(getAudioId()));
    i.putExtra("artist", getArtistName());
    i.putExtra("album",getAlbumName());
    i.putExtra("track", getTrackName());
    i.putExtra("playing", isPlaying());        
    i.putExtra("ListSize", getQueue());
    i.putExtra("duration", duration());
    i.putExtra("position", position());
    sendBroadcast(i);
}

根据您的播放状态以适当的意图(如上定义)调用 bluetoothNotifyChange:暂停/播放/元数据已更改.

Call bluetoothNotifyChange with the appropriate intent (defined above) depending on your playback status: pause/playing/metadata changed.

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