运行将接收SCREEN_ON服务广播

Question

我建立应接收Android的android.intent.action.SCREEN_ON广播的和做的背景是什么应用程序。

（即广播保护，不能被添加到清单中的IntentFilter部分，则需要可通过编程registerReceiver()注册）

我知道如何启动服务。我知道如何让独立启动它的活动的（因此它不会与它死了）。真正的问题是：

如何在服务中注册SCREEN_ON广播接收器，即使服务由于系统发送广播而导致RAM数量低而被设备暂时中止，它也会被服务接收到？

Answer 1

public class OnBootService extends Service { 

    private static final String TAG = OnBootService.class.getSimpleName(); 
    private PowerButtonReceiver mPowerButtonReceiver = null; 

    @Override 
    public IBinder onBind(Intent intent) { 
     return null; 
    } 

    @Override 
    public int onStartCommand(final Intent intent, final int flags, final int startId) { 

    if (mPowerButtonReceiver==null) { 
     mPowerButtonReceiver = new PowerButtonReceiver(); 
     registerReceiver(mPowerButtonReceiver, new IntentFilter(Intent.ACTION_SCREEN_ON)); 
    } 
    return Service.START_NOT_STICKY; 
} 

@Override 
public void onCreate() { 
    super.onCreate(); 

    Log.i(TAG,"onCreate()"); 
} 

    // unregister the Receiver when the Service gets stopped (destroyed) 
@Override 
public void onDestroy() { 
    super.onDestroy(); 

    unregisterReceiver(mPowerButtonReceiver); 

    Log.i(TAG, ""+TAG+" stopped: "+ new Date().toString()); 
    } 
} 

编辑：我添加了powerButtonReceiver太：

public class PowerButtonReceiver extends BroadcastReceiver { 

    private static final String TAG = "PowerButtonReceiver"; 

    private int mPowerClickCounter = 0; 
    private boolean inTime = true; 

    @Override 
    public void onReceive(Context context, Intent intent) { 
     SharedPreferences sharedPref = context.getSharedPreferences("MyPrefs", Context.MODE_PRIVATE); 

     Boolean bCheck = sharedPref.getBoolean("PowerButtonReceiverState", false); 

     // check if screen is on 
     PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 
     Boolean screenOn = pm.isScreenOn(); 
     Log.i(TAG, "Screen is on: " + screenOn.toString()); 
}}