定位服务GPS强制关闭

Question

嗨，我开发了一个应用程序，以查找最佳位置并将其短信发送至某个号码。它在网络位置上可以正常工作，但是当我想在GPS或Criteria类中定位时，它会强制关闭！您好帮助我tnx。

package ir.M410.toolkit;

import android.app.Service;

import android.content.Intent;

import android.location.Criteria;

import android.location.Location;

import android.location.LocationListener;

import android.location.LocationManager;

import android.os.Bundle;

import android.os.IBinder;

import android.telephony.SmsManager;

import android.util.Log;

public class LocationFinder extends Service implements LocationListener{

double lat ,lon ;

@Override

public IBinder onBind(Intent arg0) {

    return null;

       }

@Override

public int onStartCommand(Intent intent, int flags, int startId) {

    // We want this service to continue running until it is explicitly

    // stopped, so return sticky.

    LocationManager mlocationManager = (LocationManager)        getSystemService(LOCATION_SERVICE);

    Criteria criteria = new Criteria();

    criteria.setAccuracy(Criteria.ACCURACY_FINE);

    criteria.setPowerRequirement(Criteria.POWER_MEDIUM);

    String locationprovider = mlocationManager.getBestProvider(criteria, true);

    Location mlocation = mlocationManager.getLastKnownLocation(locationprovider);

      lat = mlocation.getLatitude ();

      lon = mlocation.getLongitude ();

      Log.i("Geo_Location", "Latitude: " + lat + ", Longitude: " + lon);

      SmsManager sms = SmsManager.getDefault();

        sms.sendTextMessage("[phone]", null,"https://maps.google.com/maps?q="+lat+","+lon, null, null);

        //  SmsManager sms = SmsManager.getDefault();

    //sms.sendTextMessage(MainActivity.senderNum, null,"  "+"lat:"+lat+"  "+"lon:"+lon, null, null);

 //stopSelf();

          return START_NOT_STICKY;

}

@Override

public void onLocationChanged(Location location) {

    // TODO Auto-generated method stub

     lat= location.getLatitude();

    lon =location.getLongitude();

    Log.i("Geo_Location", "Latitude: " + lat + ", Longitude: " + lon);

  //  stopSelf();

}