音频线控制 MediaPlayer 服务

Question

我编写了一个普通的MediaPlayer，比如APP。现在，我有一副带内置遥控器的耳机，可以控制音量、暂停和播放歌曲。我的想法是用这个来控制我的 MediaPlayer 服务。但是我在网上找不到任何关于我的问题的信息。有人可以给我一些提示吗？

Answer 1

我不知道为什么我的问题被否决了，但我会为面临同样问题的其他人回答。

public class MediaService extends Service implements
    MediaPlayer.OnPreparedListener, MediaPlayer.OnErrorListener,
    MediaPlayer.OnCompletionListener {


private IntentFilter intentFilterMediaButton = new IntentFilter(Intent.ACTION_MEDIA_BUTTON);
private MediaButtonIntentReceiver mMediaButtonReceiver = new MediaButtonIntentReceiver();

@Override
public void onPrepared(MediaPlayer mediaPlayer) {
    registerReceiver(this.mMediaButtonReceiver, this.intentFilterMediaButton);
    player.start();
}
public static class MediaButtonIntentReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        String intentAction = intent.getAction();
        if (!Intent.ACTION_MEDIA_BUTTON.equals(intentAction)) {
            return;
        }
        KeyEvent event =   (KeyEvent)intent.getParcelableExtra(Intent.EXTRA_KEY_EVENT);
        if (event == null) {
            return;
        }
        int action = event.getAction();
        if (action == KeyEvent.ACTION_DOWN) {
            switch (action){
                case 0: // Button down
                    // do something
                    Toast.makeText(context, "BUTTON PRESSED!", Toast.LENGTH_SHORT).show();
                    break;
            }
        }
        abortBroadcast();
    }
}

主要调用这个 activity.onCreate()

    AudioManager manager = (AudioManager) getSystemService(AUDIO_SERVICE);
    if (manager != null) {
        manager.registerMediaButtonEventReceiver(new ComponentName(getPackageName(), MediaService.MediaButtonIntentReceiver.class.getName()));
    }

并将其放入清单

    <receiver android:name="MediaService$MediaButtonIntentReceiver" android:enabled="true">
        <intent-filter android:priority="1000000000">
            <action android:name="android.intent.action.MEDIA_BUTTON" />
        </intent-filter>
    </receiver>

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