gps 位置 xamarin android 不工作

Question

在列表 viewList 项目中使用此代码段获取 gps 位置但它不起作用(public class ItemGeoLocationActivity : ListActivity, ILocationListener the class)

请大家看看我做错了什么

[Activity(Label = "ItemGeoLocationActivity")]
public class ItemGeoLocationActivity : ListActivity, ILocationListener
{
LocationManager _locMgr;
        private string Latitude;
        private string Longitude;
        protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);
            _locMgr = GetSystemService(Context.LocationService) as LocationManager;
            list = new ItemGeoLocationAdapter(this);
            this.ListAdapter = list;
        }

        protected override void OnListItemClick(ListView l, View v, int position, long id)
        {
            var item = this.list.GetItemAtPosition(position);

            var builder = new AlertDialog.Builder(this);
            builder.SetMessage(item.ItemName + "-- Latitude ="+Latitude+" Longitude="+Longitude);
            builder.SetPositiveButton("OK", (s, e) =>
            {
                var itemGeoLocation =new ItemGeoLocation
                {
                    ItemId = item.ItemId,
                    Langtitued = Convert.ToDecimal(Longitude),
                    Latitued = Convert.ToDecimal(Latitude)
                };
                new DataAccess().AddItemGeoLocation(itemGeoLocation);
                Toast.MakeText(this, item.ItemName + "-- Recode Added Succesafully", ToastLength.Long).Show(); 

            });
            builder.SetNegativeButton("Cancel", (s, e) =>
            {
                Toast.MakeText(this, item.ItemName + " Save Cancelation Success!", ToastLength.Long).Show(); 

            });
            builder.Create().Show();

        }

        protected override void OnResume()
        {
            base.OnResume();
            var locationCriteria = new Criteria();
            locationCriteria.Accuracy = Accuracy.NoRequirement;
            locationCriteria.PowerRequirement = Power.NoRequirement;
            string locationProvider = _locMgr.GetBestProvider(locationCriteria, true);
            _locMgr.RequestLocationUpdates(locationProvider, 2000, 1, this);
        }

        protected override void OnPause()
        {
            base.OnPause();
            _locMgr.RemoveUpdates(this);
        }

        #region ILocationListener implementation
        public void OnLocationChanged(Location location)
        {
            Latitude = location.Latitude.ToString();
            Longitude=location.Longitude.ToString();
        }

        public void OnProviderDisabled(string provider)
        {
        }

        public void OnProviderEnabled(string provider)
        {
        }

        public void OnStatusChanged(string provider, Availability status, Bundle extras)
        {
        }

}

Answer 1

我更换了模拟器，它成功了fine.Use http://www.andyroid.net/ 安卓模拟器。它也支持 Xamarin

gps 位置 xamarin android 不工作

gps location xamarin android not working

android

gps

xamarin

latitude-longitude