using System.Collections.Generic; using System.Linq; using System.Threading.Tasks; using Contacts; using CoreLocation; #if __MOBILE__ using AddressBookUI; #endif using CCLGeocoder = CoreLocation.CLGeocoder; #if __MOBILE__ namespace Xamarin.Forms.Maps.iOS #else namespace Xamarin.Forms.Maps.MacOS #endif { internal class GeocoderBackend { public static void Register() { Geocoder.GetPositionsForAddressAsyncFunc = GetPositionsForAddressAsync; Geocoder.GetAddressesForPositionFuncAsync = GetAddressesForPositionAsync; } static Task> GetAddressesForPositionAsync(Position position) { var location = new CLLocation(position.Latitude, position.Longitude); var geocoder = new CCLGeocoder(); var source = new TaskCompletionSource>(); geocoder.ReverseGeocodeLocation(location, (placemarks, error) => { if (placemarks == null) placemarks = new CLPlacemark[0]; List addresses = new List(); #if __MOBILE__ addresses = placemarks.Select(p => ABAddressFormatting.ToString(p.AddressDictionary, false)).ToList(); #else foreach (var item in placemarks) { var address = new CNMutablePostalAddress(); address.Street = item.AddressDictionary["Street"] == null ? "" : item.AddressDictionary["Street"].ToString(); address.State = item.AddressDictionary["State"] == null ? "" : item.AddressDictionary["State"].ToString(); address.City = item.AddressDictionary["City"] == null ? "" : item.AddressDictionary["City"].ToString(); address.Country = item.AddressDictionary["Country"] == null ? "" : item.AddressDictionary["Country"].ToString(); address.PostalCode = item.AddressDictionary["ZIP"] == null ? "" : item.AddressDictionary["ZIP"].ToString(); addresses.Add(CNPostalAddressFormatter.GetStringFrom(address, CNPostalAddressFormatterStyle.MailingAddress)); } #endif source.SetResult(addresses); }); return source.Task; } static Task> GetPositionsForAddressAsync(string address) { var geocoder = new CCLGeocoder(); var source = new TaskCompletionSource>(); geocoder.GeocodeAddress(address, (placemarks, error) => { if (placemarks == null) placemarks = new CLPlacemark[0]; IEnumerable positions = placemarks.Select(p => new Position(p.Location.Coordinate.Latitude, p.Location.Coordinate.Longitude)); source.SetResult(positions); }); return source.Task; } } }