Android耳机按键监听

MediaButtonService.java：

//耳机按键监听的Receiver注册比较特殊。

import android.app.Service;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.media.AudioManager;
import android.os.IBinder;

public class MediaButtonService extends Service {

private AudioManager mAudioManager;
private ComponentName rec;
@Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}

@Override
public void onCreate() {
// TODO Auto-generated method stub
super.onCreate();
mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
rec = new ComponentName(getPackageName(),
MediaButtonIntentReceiver.class.getName());
mAudioManager.registerMediaButtonEventReceiver(rec);
}

@Override
public void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
mAudioManager.unregisterMediaButtonEventReceiver(rec);
}

}

MediaButtonIntentReceiver.java

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import android.view.KeyEvent;
import android.widget.Toast;

public class MediaButtonIntentReceiver extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {
String intentAction = intent.getAction();
if (Intent.ACTION_MEDIA_BUTTON.equals(intentAction)) {
KeyEvent event = (KeyEvent) intent
.getParcelableExtra(Intent.EXTRA_KEY_EVENT);
if (event == null) {
return;
}

int keycode = event.getKeyCode();
int action = event.getAction();
long eventtime = event.getEventTime();

//按键处理逻辑

// single quick press: pause/resume.
// double press: next track
// long press: start auto-shuffle mode.

String command = null;
switch (keycode) {
case KeyEvent.KEYCODE_HEADSETHOOK:
case KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE:
//耳机中间按键，可作为来电接听键，还可以作为音乐播放/暂停切换按键。

if (action == KeyEvent.ACTION_DOWN)
Toast.makeText(context, context.getResources().getString(R.string.media_but_res), Toast.LENGTH_SHORT).show();
break;
}

}
}
}

AndroidManifest.xml:

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