Android: 如何从蓝牙设备控制音乐服务play/pause？

Question

开发音乐应用。在我的音乐服务中，我编写了一个自定义广播接收器。它适用于 Intent.ACTION_HEADSET_PLUG 但不适用于 Intent.ACTION_MEDIA_BUTTON.

请指导如何从蓝牙设备（Play/Pause/Next/Previous）控制音乐控件。

Intent.ACTION_HEADSET_PLUG 的代码是：

@Override
    public void onReceive(Context context, Intent intent) {

        // aux
        if(intent.getAction().equals(Intent.ACTION_HEADSET_PLUG))
        {
            int state = intent.getIntExtra("state", -1);

            if(state == 0)
            {
                // Headset is unplugged. PAUSE
                pauseSong();
                sendBroadcast();
            }
            else if(state == 1)
            {
                // headset is plugged
                resumeSong();
                sendBroadcast();
            }

        }
    }

Answer 1

如 Media playback the right way talk, you must be registered as the 'preferred media app'. This is much easier when you use MediaSessionCompat as explained in the MediaSessionCompat video 中所述：

ComponentName mediaButtonReceiver =
  new ComponentName(context, YourBroadcastReceiver.class);
MediaSessionCompat mediaSession = 
  new MediaSessionCompat(context,
  tag, // Debugging tag, any string
  mediaButtonReceiver,
  null);
mediaSession.setFlags(
  MediaSessionCompat.FLAG_HANDLES_MEDIA_BUTTONS | 
  MediaSessionCompat.FLAG_HANDLES_TRANSPORT_CONTROLS);
mediaSession.setCallback(this); // a MediaSessionCompat.Callback

// This is what enables media buttons and should be called
// Immediately after getting audio focus
mediaSession.setActive(true);

Answer 2

已接受的答案似乎无效

我用 ExoPlayer 以另一种方式实现了它

步骤#1 添加依赖项

    implementation 'com.google.android.exoplayer:exoplayer:2.13.1'
    implementation 'com.google.android.exoplayer:extension-mediasession:2.13.1'

第 2 步

        mediaSession = MediaSessionCompat(this, "Vion")
        val mediaSessionConnector = MediaSessionConnector(mediaSession!!)
        mediaSessionConnector.setMediaButtonEventHandler(object: MediaSessionConnector.MediaButtonEventHandler{
            override fun onMediaButtonEvent(player: Player, controlDispatcher: ControlDispatcher, mediaButtonEvent: Intent): Boolean {
                val event: KeyEvent = mediaButtonEvent.getParcelableExtra(Intent.EXTRA_KEY_EVENT) ?: return false
                if(event.action == KeyEvent.ACTION_UP) {
                    when(event.keyCode) {
                        KeyEvent.KEYCODE_MEDIA_PREVIOUS -> {
                           
                        }
                        KeyEvent.KEYCODE_MEDIA_PAUSE -> {
                            
                        }
                        KeyEvent.KEYCODE_MEDIA_PLAY -> {
                            
                        }
                        KeyEvent.KEYCODE_MEDIA_NEXT -> {
                            
                        }
                    }
                }
                return true
            }
        })
        mediaSessionConnector.setPlayer(exoPlayer)

Android: 如何从蓝牙设备控制音乐服务play/pause？

Android: How to control music service play/pause from bluetooth device?

java

android

android-intent

android-music-player

android-bluetooth