Fix up Keyboard Scroll with latest code

Author: PureWeen

ShanedlerSamples/Library/Common/ViewExtensions.iOS.cs

@@ -1,5 +1,6 @@
 #if IOS || MACCATALYST
 #nullable enable
+using Microsoft.Maui.Platform;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -58,6 +59,19 @@ internal static partial class Extensions
 			return null;
 		}
 
+		internal static T? FindResponder<T>(this UIViewController controller) where T : UIViewController
+		{
+			var nextResponder = controller.View as UIResponder;
+			while (nextResponder is not null)
+			{
+				nextResponder = nextResponder.NextResponder;
+
+				if (nextResponder is T responder && responder != controller)
+					return responder;
+			}
+			return null;
+		}
+
 		internal static UIView? FindNextView(this UIView? view, UIView containerView, Func<UIView, bool> isValidType)
 		{
 			UIView? nextView = null;
@@ -114,6 +128,36 @@ internal static void ChangeFocusedView(this UIView view, UIView? newView)
 			else
 				newView.BecomeFirstResponder();
 		}
+		internal static T? FindTopController<T>(this UIView view) where T : UIViewController
+		{
+			var bestController = view.FindResponder<T>();
+			var tempController = bestController;
+
+			while (tempController is not null)
+			{
+				tempController = tempController.FindResponder<T>();
+
+				if (tempController is not null)
+					bestController = tempController;
+			}
+
+			return bestController;
+		}
+
+		internal static UIView? GetContainerView(this UIView? startingPoint)
+		{
+			var rootView = startingPoint?.FindResponder<ContainerViewController>()?.View;
+
+			if (rootView is not null)
+				return rootView;
+
+			var firstViewController = startingPoint?.FindTopController<UIViewController>();
+
+			if (firstViewController?.ViewIfLoaded is not null)
+				return firstViewController.ViewIfLoaded.FindDescendantView<Microsoft.Maui.Platform.ContentView>();
+
+			return null;
+		}
 	}
 }
 #endif