fix: Deprecated iOS Launcher methods

src/Uno.UI/UI/Xaml/Controls/WebView/Native/iOSmacOS/UnoWKWebView.iOSmacOS.cs

@@ -267,7 +267,7 @@ private void OpenUrl(string url)
 		var nsUrl = new NSUrl(url);
 		//Opens the specified URL, launching the app that's registered to handle the scheme.
 #if __IOS__
-		UIApplication.SharedApplication.OpenUrl(nsUrl);
+		Task.Run(() => UIApplication.SharedApplication.OpenUrlAsync(nsUrl, new UIApplicationOpenUrlOptions()));
 #else
 		NSWorkspace.SharedWorkspace.OpenUrl(nsUrl);
 #endif

src/Uno.UWP/ApplicationModel/Calls/PhoneCallManager.iOS.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
+using System.Threading.Tasks;
 using CallKit;
 using Foundation;
 using UIKit;
@@ -37,10 +38,7 @@ static PhoneCallManager()
 		internal static void RaiseCallStateChanged() => CallStateChanged?.Invoke(null, null);
 
 		private static void ShowPhoneCallUIImpl(string phoneNumber, string displayName)
-		{
-			var url = new NSUrl($"tel:{phoneNumber}");
-			UIApplication.SharedApplication.OpenUrl(url);
-		}
+			=> Task.Run(() => UIApplication.SharedApplication.OpenUrlAsync(new NSUrl($"tel:{phoneNumber}"), new UIApplicationOpenUrlOptions()));
 
 	}
 }

src/Uno.UWP/System/Launcher.iOS.SpecialUris.cs

@@ -19,18 +19,19 @@ private static bool CanHandleSpecialUri(Uri uri)
 			}
 		}
 
-		private static bool HandleSpecialUri(Uri uri)
+		private static async Task<bool> HandleSpecialUri(Uri uri)
 		{
 			switch (uri.Scheme.ToLowerInvariant())
 			{
-				case MicrosoftSettingsUri: return HandleSettingsUri(uri);
+				case MicrosoftSettingsUri: return await HandleSettingsUri(uri);
 				default: throw new InvalidOperationException("This special URI is not supported on iOS");
 			}
 		}
 
-		private static bool HandleSettingsUri(Uri uri) =>
-			UIApplication.SharedApplication.OpenUrl(
-				new NSUrl(UIApplication.OpenSettingsUrlString));
+		private static async Task<bool> HandleSettingsUri(Uri uri) =>
+			await UIApplication.SharedApplication.OpenUrlAsync(
+				new NSUrl(UIApplication.OpenSettingsUrlString),
+				new UIApplicationOpenUrlOptions());
 	}
 }
 #endif

src/Uno.UWP/System/Launcher.iOSmacOS.cs

@@ -12,17 +12,24 @@ namespace Windows.System
 {
 	public static partial class Launcher
 	{
-		public static Task<bool> LaunchUriPlatformAsync(Uri uri)
+		public static
+#if __IOS__
+			async
+#endif
+			Task<bool> LaunchUriPlatformAsync(Uri uri)
 		{
 			if (IsSpecialUri(uri) && CanHandleSpecialUri(uri))
 			{
+#if __IOS__
+				return await HandleSpecialUri(uri);
+#else
 				return Task.FromResult(HandleSpecialUri(uri));
+#endif
 			}
 
 			var appleUrl = new AppleUrl(uri.OriginalString);
 #if __IOS__
-			return Task.FromResult(UIApplication.SharedApplication.OpenUrl(
-				appleUrl));
+			return await UIApplication.SharedApplication.OpenUrlAsync(appleUrl, new UIApplicationOpenUrlOptions());
 #else
 			return Task.FromResult(NSWorkspace.SharedWorkspace.OpenUrl(
 				appleUrl));