LocationManager.requestLocationUpdates没有响应

Question

我正在尝试创建一个应用程序，其中目标服务在后台运行并通过网络提供商获取用户的位置，当用户靠近其目的地（电话呼叫门）时，它启动另一个针对特定登机口的IntentService，并通过gps提供商更频繁地获取位置更新 问题是，当我尝试将位置放在更活跃的意图服务上时，它根本没有响应。

这是我的onStartCommand中的代码：

Bundle gateData = intent.getExtras();
    gateLat = gateData.getDouble("latitude");
    gateLong = gateData.getDouble("longitude");
    gateName = gateData.getString("gateName");
    gatePhoneNumber = gateData.getString("gatePhoneNumber");
    gateId = gateData.getInt("gateId");
    Log.i("Active onStartCommand for:", gateId+"\n"+gateName+"\n phone:"+gatePhoneNumber);
    helper = new MyGatesOpenHelper(this);
    currentGate = helper.getGate(gateId);
    currentGate.setMode(Gate.MODE_ONHOLD);
    helper.updateGate(currentGate);
    results = new float[3];
    aManager = (LocationManager)getSystemService(LOCATION_SERVICE);
    aListener = new LocationListener() {

        @Override
        public void onStatusChanged(String provider, int status, Bundle extras) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onProviderEnabled(String provider) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onProviderDisabled(String provider) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onLocationChanged(Location location) {
            // TODO Auto-generated method stub
            makeUseOfNewLocation(location);
            Log.i("onLocationChanged coords","Lat:"+location.getLatitude()+" Long:"+location.getLongitude());

        }
    };
    boolean isGpsEnabled = aManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
    Log.i("GPS Status:",isGpsEnabled?"Enabled":"Disabled");
    aManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, aListener);
    return super.onStartCommand(intent, flags, startId);