GPS koordinatlarını toplama

Question

xamarin kullanarak yerel bir android uygulaması yapıyorum. Sorun, uygulamanın koordinatları mükemmel bir şekilde emülatörde topladığı ve görüntülediğidir, ancak bir akıllı telefona koyduğumda (2 adet samsung telefonu denedim), şu anki adresi belirleyemiyorum. Ek bilgi verileri ve konumları açık olduğundan sorunun nerede olduğundan emin değilim. Yardım ettiğin için teşekkür ederim. Buradaki telefonları muhtemelen artık konum hizmetleri için izin istiyorum gerektirir hatmi çalıştıran https://developer.xamarin.com/recipes/android/os_device_resources/gps/get_current_device_location/

[Activity(Label = "NewRoute")] 
    public class NewRouteActivity : Activity, ILocationListener 
    { 

     static readonly string TAG = "X:" + typeof(NewRouteActivity).Name; 
     TextView _addressText; 
     Location _currentLocation; 
     LocationManager _locationManager; 

     string _locationProvider; 
     TextView _locationText; 


     public async void OnLocationChanged(Location location) { 
      _currentLocation = location; 
      if (_currentLocation == null) 
      { 
       _locationText.Text = "Unable to determine your location. Try again in a short while."; 
      } 
      else 
      { 
       _locationText.Text = string.Format("{0:f6},{1:f6}", _currentLocation.Latitude, _currentLocation.Longitude); 
       Address address = await ReverseGeocodeCurrentLocation(); 
       DisplayAddress(address); 
      } 
     } 

     public void OnProviderDisabled(string provider) { } 

     public void OnProviderEnabled(string provider) { } 

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

     protected override void OnCreate(Bundle bundle) 
     { 
      base.OnCreate(bundle); 
      SetContentView(Resource.Layout.CreatetRoute); 

      _addressText = FindViewById<TextView>(Resource.Id.address_text); 
      _locationText = FindViewById<TextView>(Resource.Id.location_text); 
      FindViewById<TextView>(Resource.Id.get_address_button).Click += AddressButton_OnClick; 

      InitializeLocationManager(); 


      Button btnEndPoint = FindViewById<Button>(Resource.Id.btnEndPoint); 
      btnEndPoint.Click += new EventHandler(AfterPointsCollected); 
     } 
     //Location Stuff 
     void InitializeLocationManager() 
     { 
      _locationManager = (LocationManager)GetSystemService(LocationService); 
      Criteria criteriaForLocationService = new Criteria 
      { 
       Accuracy = Accuracy.Fine 
      }; 
      IList<string> acceptableLocationProviders = _locationManager.GetProviders(criteriaForLocationService, true); 

      if (acceptableLocationProviders.Any()) 
      { 
       _locationProvider = acceptableLocationProviders.First(); 
      } 
      else 
      { 
       _locationProvider = string.Empty; 
      } 
      Log.Debug(TAG, "Using " + _locationProvider + "."); 
     } 
     //Override OnResume so that Activity1 will begin listening to the LocationManager when the activity comes into the foreground: 
     protected override void OnResume() 
     { 
      base.OnResume(); 
      _locationManager.RequestLocationUpdates(_locationProvider, 0, 0, this); 
     } 
     async void AddressButton_OnClick(object sender, EventArgs eventArgs) 
     { 
      if (_currentLocation == null) 
      { 
       _addressText.Text = "Can't determine the current address. Try again in a few minutes."; 
       return; 
      } 

      Address address = await ReverseGeocodeCurrentLocation(); 
      DisplayAddress(address); 
     } 

     async Task<Address> ReverseGeocodeCurrentLocation() 
     { 
      Geocoder geocoder = new Geocoder(this); 
      IList<Address> addressList = 
       await geocoder.GetFromLocationAsync(_currentLocation.Latitude, _currentLocation.Longitude, 10); 

      Address address = addressList.FirstOrDefault(); 
      return address; 
     } 

     void DisplayAddress(Address address) 
     { 
      if (address != null) 
      { 
       StringBuilder deviceAddress = new StringBuilder(); 
       for (int i = 0; i < address.MaxAddressLineIndex; i++) 
       { 
        deviceAddress.AppendLine(address.GetAddressLine(i)); 
       } 
       // Remove the last comma from the end of the address. 
       _addressText.Text = deviceAddress.ToString(); 
      } 
      else 
      { 
       _addressText.Text = "Unable to determine the address. Try again in a few minutes."; 
      } 
     } 

     //Override OnPause and unsubscribe Activity1 from the LocationManager when the activity goes into the background: 
     protected override void OnPause() 
     { 
      base.OnPause(); 
      _locationManager.RemoveUpdates(this); 
     } 
     //Changing Activity 
     void AfterPointsCollected(object sender, EventArgs e) 
     { 
      //context //activity 
      Intent intent = new Intent(this, typeof(AfterPointsCollectedActivity)); 
      //starts the activity with the intent above 
      this.StartActivity(intent); 

     } 

Answer 1

yardımcı xammarin tarifi 'sarmak olduğunu.

Daha fazla bilgiyi burada bulabilirsiniz https://blog.xamarin.com/requesting-runtime-permissions-in-android-marshmallow/. Tüm bunları sizin için işleyen bu Nuget paketini kullanmak isteyebilirsiniz. https://github.com/jamesmontemagno/Xamarin.Plugins/tree/master/Geolocator