android – MediaStyle通知没有响应RemoteControl事件.

我们正在将正在进行的播放通知迁移到Lollipop中引入的MediaStyle通知. RemoteControlClient似乎已被弃用,MediaStyle通知不处理媒体按钮事件(例如通过耳机远程暂停/播放).

有没有人得到这项工作？ MediaSessionCallback中没有任何事件被调用.

以下是媒体会话的初始化方式

mSession = new MediaSessionCompat(this,TAG);
    mSession.setCallback(new MediaSessionCallback());
    mSession.setFlags(MediaSessionCompat.FLAG_HANDLES_MEDIA_BUTTONS | MediaSessionCompat.FLAG_HANDLES_TRANSPORT_CONTROLS);
    mSession.setPlaybackToLocal(AudioManager.STREAM_MUSIC);
    mSession.setActive(true);

以下是设置元数据的方式

MediaMetadataCompat.Builder MetadataBuilder = new MediaMetadataCompat.Builder();
    MetadataBuilder
            .putLong(MediaMetadata.MetaDATA_KEY_DURATION,clip.getDuration())
            .putString(MediaMetadata.MetaDATA_KEY_MEDIA_ID,clip.getClipId())
            .putString(MediaMetadata.MetaDATA_KEY_TITLE,clip.getTitle())
            .putString(MediaMetadata.MetaDATA_KEY_ARTIST,clip.getSourceName())
            .putString(MediaMetadata.MetaDATA_KEY_ALBUM_ART_URI,clip.getimageUrl())
            .putLong(MediaMetadata.MetaDATA_KEY_DURATION,clip.getDuration());
    mSession.setMetadata(MetadataBuilder.build());

最后,通知代码：

MediaSession mediaSession = (MediaSession) session.getMediaSession();
        Notification.Builder builder =
                new Notification.Builder(c)
                        .setDefaults(0)
                        .setSmallIcon(R.drawable.ic_notif)
                        .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
                        .setContentTitle(clip.getTitle())
                        .setContentText(clip.getSourceName())
                        .setProgress((int)duration,(int)progress,false)
                        .setWhen(0)
                        .setContentIntent(pendingIntent);

        if (playing) {
            builder.addAction(R.drawable.ic_media_pause,c.getString(R.string.media_pause),getPendingIntentForKeyCode(app.getApplicationContext(),KeyEvent.KEYCODE_MEDIA_PAUSE));
        } else {
            builder.addAction(R.drawable.ic_media_play,c.getString(R.string.media_play),KeyEvent.KEYCODE_MEDIA_PLAY));
        }
        builder.addAction(R.drawable.ic_media_next,c.getString(R.string.media_next),KeyEvent.KEYCODE_MEDIA_NEXT));

        builder.setStyle(new Notification.MediaStyle()
                .setMediaSession(mediaSession.getSessionToken())
                .setShowActionsInCompactView(new int[] {1,2})
                )
        );

        notification = builder.build();

PlaybackState state = new PlaybackState.Builder()
        .setActions(
                PlaybackState.ACTION_PLAY | PlaybackState.ACTION_PLAY_PAUSE |
                PlaybackState.ACTION_PLAY_FROM_MEDIA_ID | PlaybackState.ACTION_PAUSE |
                PlaybackState.ACTION_SKIP_TO_NEXT | PlaybackState.ACTION_SKIP_TO_PREVIoUS)
        .setState(PlaybackState.STATE_PLAYING,position,speed,SystemClock.elapsedRealtime())
        .build();
mSession.setPlaybackState(state);