关闭应用程序后继续运行广播接收器

下面是在应用程序

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

和代码注册该接收器的接收器

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"); 
     } 
    } 
}

来源

2013-05-29 Sergey Pekar

您可能想要创建一个[服务]（https://developer.android.com/reference/android/app/Service.html） –

但接收事件呢？ –

你真的需要监视屏幕开/关事件吗？他们强迫你注册一个不在清单中的接收者的原因是他们不希望人们总是监视这些事件并放慢设备速度。 – natez0r

您可以使用一个服务

在主应用程序的启动/停止该服务的代码

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

服务

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); 
} 
}

来源

2013-05-29 22:05:45

这应该被接受为答案。 – Talha