Android线控的使用 | 易学教程

实现方式一：只能在程序为前台时监控

在Activity中即可监听

@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
    Log.i("MainActivity-onKeyUp", "" + keyCode);
    switch (keyCode) {
        case KeyEvent.KEYCODE_HEADSETHOOK:
            Toast.makeText(MainActivity.this, "Pause_Up", Toast.LENGTH_SHORT).show();
            return false;
    }
    return super.onKeyUp(keyCode, event);
}

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    Log.i("MainActivity-onKeyDown", "" + keyCode);
    switch (keyCode) {
        case KeyEvent.KEYCODE_HEADSETHOOK:
            Toast.makeText(MainActivity.this, "Pause_Down", Toast.LENGTH_SHORT).show();
            return false;
    }
    return super.onKeyUp(keyCode, event);
}

实现方式二：前后台均可

1.自定义Receiver

public class EarphoneReceiver extends BroadcastReceiver {
    public EarphoneReceiver() {
    }

    @Override
    public void onReceive(Context context, Intent intent) {
        KeyEvent event = intent.getParcelableExtra(Intent.EXTRA_KEY_EVENT);
        if (event.getAction() == KeyEvent.ACTION_UP) {
            //// TODO: 2016/2/18 0018 按下时操作
            Message msg = Message.obtain();
            msg.what = 100;
            handler.sendMessage(msg);
        }
    }

    Handler handler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            switch (msg.what) {
                case 100:
                    //// TODO: 2016/2/18 0018  操作
                    EarphoneButtonHelper.EarphoneListener listener = EarphoneButtonHelper.getInstance().getListener();
                    if (listener != null) {
                        listener.onClick();
                    }
                    break;
            }
        }
    };

}

AndroidManifast.xml中注册

<receiver android:name=".EarphoneReceiver">
    <intent-filter android:priority="1000">
        <action android:name="android.intent.action.MEDIA_BUTTON" />
    </intent-filter>
</receiver>

2.注册/取消Receiver

/**
 * 取消广播接收器
 * @param context
 */
public void unrigisterReceiver(Context context) {
    AudioManager mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
    ComponentName name = new ComponentName(context.getPackageName(), EarphoneReceiver.class.getName());
    mAudioManager.unregisterMediaButtonEventReceiver(name);
}


/**
 * 注册广播接收器
 * @param context
 */
public void registerReceiver(Context context) {
    AudioManager mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
    ComponentName name = new ComponentName(context.getPackageName(), EarphoneReceiver.class.getName());
    mAudioManager.registerMediaButtonEventReceiver(name);
}

其他

参考文章

Android耳机线控详解，蓝牙耳机按钮监听

来源：https://www.cnblogs.com/qingjian/p/5200642.html

标签

keycode

event

context