關閉應用程序後繼續運行廣播接收器

下面是在應用程序

IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON); 
    filter.addAction(Intent.ACTION_SCREEN_OFF); 
    BroadcastReceiver mReceiver = new ScreenEventsReceiver(); 
    registerReceiver(mReceiver, filter);

和代碼註冊該接收器的接收器

public class ScreenEventsReceiver extends BroadcastReceiver { 
    public static boolean wasScreenOn = true; 

    @Override 
    public void onReceive(Context context, Intent intent) { 
     if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) { 
      wasScreenOn = false; 
      Log.d("ScreenEventReceiver", "ON"); 
     } else if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) { 
      wasScreenOn = true; 
      Log.d("ScreenEventReceiver", "ON"); 
     } 
    } 
}

來源

2013-05-29 Sergey Pekar

您可能想要創建一個[服務]（https://developer.android.com/reference/android/app/Service.html） –

但接收事件呢？ –

你真的需要監視屏幕開/關事件嗎？他們強迫你註冊一個不在清單中的接收者的原因是他們不希望人們總是監視這些事件並放慢設備速度。 – natez0r

您可以使用一個服務

在主應用程序的啓動/停止該服務的代碼

Intent service = new Intent(context, MyService.class); 
context.startService(service); 
... 
Intent service = new Intent(context, MyService.class); 
context.stopService(service);

服務

public class MyService extends Service 
{ 
private static BroadcastReceiver m_ScreenOffReceiver; 

@Override 
public IBinder onBind(Intent arg0) 
{ 
    return null; 
} 

@Override 
public void onCreate() 
{ 
    registerScreenOffReceiver(); 
} 

@Override 
public void onDestroy() 
{ 
    unregisterReceiver(m_ScreenOffReceiver); 
    m_ScreenOffReceiver = null; 
} 

private void registerScreenOffReceiver() 
{ 
    m_ScreenOffReceiver = new BroadcastReceiver() 
    { 
    @Override 
    public void onReceive(Context context, Intent intent) 
    { 
    Log.d(TAG, "ACTION_SCREEN_OFF"); 
    // do something, e.g. send Intent to main app 
    } 
    }; 
    IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_OFF); 
    registerReceiver(m_ScreenOffReceiver, filter); 
} 
}

來源

2013-05-29 22:05:45

這應該被接受爲答案。 – Talha