Fixes xamarin#794 try to use original string first else absolute for NSUrl (xamarin#795)

Author: jamesmontemagno

DeviceTests/DeviceTests.Shared/Launcher_Tests.cs

@@ -68,6 +68,17 @@ public async Task CanOpenUri(string uri)
             Assert.True(await Launcher.CanOpenAsync(new Uri(uri)));
         }
 
+#if __IOS__
+        [Theory]
+        [InlineData("https://maps.apple.com/maps?q=Ole Vigs Gate 8B", "https://maps.apple.com/maps?q=Ole%20Vigs%20Gate%208B")]
+        [InlineData("https://maps.apple.com", "https://maps.apple.com")]
+        public void GetNativeUrl(string uri, string expected)
+        {
+            var url = Launcher.GetNativeUrl(new Uri(uri));
+            Assert.Equal(expected, url.AbsoluteString);
+        }
+#endif
+
         [Theory]
         [InlineData("Not Valid Uri")]
         public async Task InvalidUri(string uri)

Xamarin.Essentials/Launcher/Launcher.ios.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Diagnostics;
 using System.Threading.Tasks;
 using Foundation;
 using UIKit;
@@ -8,9 +9,22 @@ namespace Xamarin.Essentials
     public static partial class Launcher
     {
         static Task<bool> PlatformCanOpenAsync(Uri uri) =>
-            Task.FromResult(UIApplication.SharedApplication.CanOpenUrl(new NSUrl(uri.OriginalString)));
+            Task.FromResult(UIApplication.SharedApplication.CanOpenUrl(GetNativeUrl(uri)));
 
         static Task PlatformOpenAsync(Uri uri) =>
-            UIApplication.SharedApplication.OpenUrlAsync(new NSUrl(uri.OriginalString), new UIApplicationOpenUrlOptions());
+            UIApplication.SharedApplication.OpenUrlAsync(GetNativeUrl(uri), new UIApplicationOpenUrlOptions());
+
+        internal static NSUrl GetNativeUrl(Uri uri)
+        {
+            try
+            {
+                return new NSUrl(uri.OriginalString);
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine("Unable to create Url from Original string, try absolute Uri: " + ex.Message);
+                return new NSUrl(uri.AbsoluteUri);
+            }
+        }
     }
 }