1 files changed, 61 insertions, 0 deletions
diff --git a/Xamarin.Forms.Maps.iOS/GeocoderBackend.cs b/Xamarin.Forms.Maps.iOS/GeocoderBackend.cs
new file mode 100644
index 00000000..42b96457
--- /dev/null
+++ b/Xamarin.Forms.Maps.iOS/GeocoderBackend.cs
@@ -0,0 +1,61 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+#if __UNIFIED__
+using CoreLocation;
+using AddressBookUI;
+#else
+using MonoTouch.AddressBookUI;
+using MonoTouch.CoreLocation;
+#endif
+#if __UNIFIED__
+using RectangleF = CoreGraphics.CGRect;
+using SizeF = CoreGraphics.CGSize;
+using PointF = CoreGraphics.CGPoint;
+
+#else
+using nfloat=global::System.Single;
+using nint=global::System.Int32;
+using nuint=global::System.UInt32;
+#endif
+
+namespace Xamarin.Forms.Maps.iOS
+{
+	internal class GeocoderBackend
+	{
+		public static void Register()
+		{
+			Geocoder.GetPositionsForAddressAsyncFunc = GetPositionsForAddressAsync;
+			Geocoder.GetAddressesForPositionFuncAsync = GetAddressesForPositionAsync;
+		}
+
+		static Task<IEnumerable<string>> GetAddressesForPositionAsync(Position position)
+		{
+			var location = new CLLocation(position.Latitude, position.Longitude);
+			var geocoder = new CLGeocoder();
+			var source = new TaskCompletionSource<IEnumerable<string>>();
+			geocoder.ReverseGeocodeLocation(location, (placemarks, error) =>
+			{
+				if (placemarks == null)
+					placemarks = new CLPlacemark[0];
+				IEnumerable<string> addresses = placemarks.Select(p => ABAddressFormatting.ToString(p.AddressDictionary, false));
+				source.SetResult(addresses);
+			});
+			return source.Task;
+		}
+
+		static Task<IEnumerable<Position>> GetPositionsForAddressAsync(string address)
+		{
+			var geocoder = new CLGeocoder();
+			var source = new TaskCompletionSource<IEnumerable<Position>>();
+			geocoder.GeocodeAddress(address, (placemarks, error) =>
+			{
+				if (placemarks == null)
+					placemarks = new CLPlacemark[0];
+				IEnumerable<Position> positions = placemarks.Select(p => new Position(p.Location.Coordinate.Latitude, p.Location.Coordinate.Longitude));
+				source.SetResult(positions);
+			});
+			return source.Task;
+		}
+	}
+}
+\ No newline at end of file