LocationManager.removeUpdates（侦听器）不删除位置侦听器

我的应用场景是我想跟踪员工的位置。我有一个广播接收器，它侦听设备引导广播并注册一个警报管理器。当警报管理器滴答时，它会注册两个位置监听器，一个监听gps和其他网络。我希望当我在onLocationChange（）方法中获得第一个位置更新时，保存位置并取消注册该位置侦听器，以便当警报管理器再次打勾时，它不会重复。要取消注册，我将位置侦听器作为静态对象在onLocationChange（）中访问它们。但我发现它不是删除位置侦听器。这里是我的代码示例：LocationManager.removeUpdates（侦听器）不删除位置侦听器

public class BootTimeServiceActivator extends BroadcastReceiver { 

    @Override 
    public void onReceive(Context context, Intent intent) { 
     // TODO Auto-generated method stub 
     Calendar calendar = Calendar.getInstance(); 
     AlarmManager am = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE); 
     Intent mIntent = new Intent(context, MyBroadCastReceiver.class); 
     PendingIntent mPendingIntent = PendingIntent.getBroadcast(context, 0, mIntent, PendingIntent.FLAG_CANCEL_CURRENT); 
     am.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), 20 * 60 * 1000, mPendingIntent); 


    } 

    } 

//.......... 

    public class MyBroadCastReceiver extends BroadcastReceiver{ 

    public static LocationManager locationManager; 
    public static MyLocationListener networkLocationListener; 
    public static MyLocationListener gpsLocationListener; 



    @Override 
    public void onReceive(Context context, Intent intent) { 
     // TODO Auto-generated method stub 
     Toast.makeText(context, "Alarm has been called...", Toast.LENGTH_SHORT).show(); 
     initLocationListeners(context); 
     registerLocationListeners(); 

    } 

    public void initLocationListeners(Context context) { 
     locationManager = (LocationManager)context.getSystemService(Context.LOCATION_SERVICE); 
     networkLocationListener = new MyLocationListener(context); 
     gpsLocationListener = new MyLocationListener(context); 

    } 

    public void registerLocationListeners() { 
     locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 100, 0, gpsLocationListener); 
     locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 100, 0, gpsLocationListener); 

    } 

} 

\\..... 

    public class MyLocationListener implements LocationListener { 

    Context context; 

    public MyLocationListener(Context context) { 
     this.context = context; 
    } 

    @Override 
    public void onLocationChanged(Location location) { 
     if(location != null) { 
      SDCardService sdService = new SDCardService(context); 
      try { 
       sdService.logToDB(location); 
      } catch (IOException e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
      } 
      Log.d("provider",location.getProvider()); 
      if(location.getProvider().equals(LocationManager.GPS_PROVIDER)) { 
       MyBroadCastReceiver.locationManager.removeUpdates(MyBroadCastReceiver.gpsLocationListener); 
      } 
      else if(location.getProvider().equals(LocationManager.NETWORK_PROVIDER)) { 
       MyBroadCastReceiver.locationManager.removeUpdates(MyBroadCastReceiver.networkLocationListener); 
      } 



     } 


    }

任何人都可以引导我，我错了吗？

来源

2012-09-17 Khawar Raza

啊...我有一个错字错。实际上，在MyBroadCastREciever类我注册gpsListener两倍：

locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 
    100, 0, 
    gpsLocationListener); 

locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 
    100, 0, 
    networkLocationListener); //previously was gpsLocationListener again. Wrong.

说的Y网络监听器没有被删除。

来源

2012-09-17 12:20:51

那么什么是你做的修改？就好像你删除了你的网络监听器你不会得到网络更新。 – amandroid

是的，因为我只想获得单个位置更新。 –

试试这个..

lmNetwork.removeUpdates(networkLocationListener); 
lmGps.removeUpdates(gpsLocationListener);

来源

2012-09-17 11:51:29

你可以用一个内部类这样做，并删除侦听的onPause（）：

 @Override 
     protected void onPause() { 
       super.onPause(); 
       GPSlocationManager.removeUpdates(GPSLocationListener); 
       CellLOcationManager.removeUpdates(NetworkLocationListener); 
     } 

     private void SetLocationManager() { 
       GPSlocationManager =(LocationManager)getSystemService(Context.LOCATION_SERVICE); 
       CellLOcationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); 
       NetworkLocationListener = new MyNetworkLocationListener(); 
       GPSLocationListener = new MyGPSLocationListener(); 
       GPSlocationManager.requestLocationUpdates("gps", 5000, 1, GPSLocationListener); 
       CellLOcationManager.requestLocationUpdates("network", 10000, 1, NetworkLocationListener); 
     } 

     private class MyNetworkLocationListener implements LocationListener { 

       @Override 
       public void onLocationChanged(Location location) { 

       } 

       @Override 
       public void onStatusChanged(String s, int i, Bundle bundle) { 
       } 

       @Override 
       public void onProviderEnabled(String s) { 
       } 

       @Override 
       public void onProviderDisabled(String s) { 
       } 

     }

来源

2015-08-02 21:07:37

LocationManager.removeUpdates（侦听器）不删除位置侦听器

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