Question

我正在开发音乐播放器，并试图通过车载蓝牙处理播放器，但是我无法确定何时关闭播放器。 MEDIA_BUTTON接收器正在控制事件。

我试图通过蓝牙断开连接操作检测到此操作，但是当汽车打开且汽车播放器关闭时，蓝牙未断开连接。

在清单中：

  <receiver android:name=".broadcast.RemoteControlReceiver">
            <intent-filter>
                <action android:name="android.intent.action.MEDIA_BUTTON" />
            </intent-filter>
        </receiver>

在MusicPlayerService中（在创建时）：

mAudioManager.registerMediaButtonEventReceiver(
                    mRemoteControlResponder);

在MusicPlayerService中（在创建时）：

mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
        mRemoteControlResponder = new ComponentName(getPackageName(),
                RemoteControlReceiver.class.getName());

Intent i = new Intent(Intent.ACTION_MEDIA_BUTTON);
    i.setComponent(mRemoteControlResponder);
    PendingIntent pi = PendingIntent.getBroadcast(this, 0, i, 0);
    mRemoteControlClient = new RemoteControlClient(pi);
    mAudioManager.registerRemoteControlClient(mRemoteControlClient);

    int flags = RemoteControlClient.FLAG_KEY_MEDIA_PREVIOUS
            | RemoteControlClient.FLAG_KEY_MEDIA_NEXT
            | RemoteControlClient.FLAG_KEY_MEDIA_PLAY
            | RemoteControlClient.FLAG_KEY_MEDIA_PAUSE
            | RemoteControlClient.FLAG_KEY_MEDIA_PLAY_PAUSE
            | RemoteControlClient.FLAG_KEY_MEDIA_STOP
            | RemoteControlClient.FLAG_KEY_MEDIA_FAST_FORWARD
            | RemoteControlClient.FLAG_KEY_MEDIA_REWIND


            | RemoteControlClient.FLAG_KEY_MEDIA_POSITION_UPDATE
            | RemoteControlClient.FLAG_KEY_MEDIA_RATING

            | RemoteControlClient.PLAYSTATE_BUFFERING
            | RemoteControlClient.PLAYSTATE_ERROR
            | RemoteControlClient.PLAYSTATE_FAST_FORWARDING
            | RemoteControlClient.PLAYSTATE_PAUSED
            | RemoteControlClient.PLAYSTATE_PLAYING
            | RemoteControlClient.PLAYSTATE_REWINDING
            | RemoteControlClient.PLAYSTATE_SKIPPING_BACKWARDS
            | RemoteControlClient.PLAYSTATE_SKIPPING_FORWARDS
            | RemoteControlClient.PLAYSTATE_STOPPED;

    mRemoteControlClient.setTransportControlFlags(flags);

在MusicPlayerService中（onTracksChanged）：

 RemoteControlClient.MetadataEditor ed = mRemoteControlClient.editMetadata(true);
    ed.putString(MediaMetadataRetriever.METADATA_KEY_TITLE, songNamesMap.get(currentPos));
    ed.putString(MediaMetadataRetriever.METADATA_KEY_ALBUM, albumNamesMap.get(currentPos));
    ed.putString(MediaMetadataRetriever.METADATA_KEY_ARTIST, artistName);
    ed.apply();

我希望这种方法能够提醒关闭汽车玩家，但不会

在Android中使用Media-Button可以关闭汽车播放器吗？

0 个答案: