Generalize HideSoftInputOnTapped on Android and iOS to support 3rd party input controls.

Author: albyrock87

src/Controls/src/Core/ContentPage/HideSoftInputOnTappedChanged/HideSoftInputOnTappedChangedManager.Android.cs

@@ -3,6 +3,7 @@
 using Android.Widget;
 using Microsoft.Maui.Graphics;
 using AView = Android.Views.View;
+using AViewGroup = Android.Views.ViewGroup;
 
 namespace Microsoft.Maui.Controls
 {
@@ -43,21 +44,12 @@ page.Handler is IPlatformViewHandler pvh &&
 		// This is called from InputViews as they are added to the visual tree
 		IDisposable? SetupHideSoftInputOnTapped(AView aView)
 		{
-			if (aView is SearchView sv &&
-				sv.GetFirstChildOfType<EditText>() is EditText editText)
+			if (aView is AViewGroup vg &&
+				vg.GetFirstChildOfType<EditText>() is {} editText)
 			{
 				aView = editText;
 			}
 
-			if (aView is AndroidX.AppCompat.Widget.SearchView svX &&
-				svX.GetFirstChildOfType<EditText>() is EditText editTextX)
-			{
-				aView = editTextX;
-			}
-
-			if (aView is null)
-				return null;
-
 			if (!FeatureEnabled)
 				return null;
 

src/Controls/src/Core/ContentPage/HideSoftInputOnTappedChanged/HideSoftInputOnTappedChangedManager.iOS.cs

@@ -7,22 +7,18 @@ namespace Microsoft.Maui.Controls
 {
 	partial class HideSoftInputOnTappedChangedManager
 	{
-		internal IDisposable? SetupHideSoftInputOnTapped(UIView uIView)
+		internal IDisposable? SetupHideSoftInputOnTapped(UIView uiView)
 		{
-			if (!FeatureEnabled || uIView.Window is null)
+			if (!FeatureEnabled || uiView.Window is null)
 				return null;
 
-			if (uIView is UISearchBar searchBar &&
-				searchBar.GetSearchTextField() is UIView textField)
-			{
-				uIView = textField;
-			}
+			var firstResponder = uiView.FindFirstResponder(v => v is UITextField or UITextView);
 
-			if (uIView is null)
+			if (firstResponder is null)
 				return null;
 
 			return ResignFirstResponderTouchGestureRecognizer
-					.Update(uIView);
+					.Update(firstResponder);
 		}
 	}
 }

src/Core/src/Platform/iOS/ViewExtensions.cs

@@ -889,12 +889,12 @@ internal static void ChangeFocusedView(this UIView view, UIView? newView)
 			return null;
 		}
 
-		internal static UIView? FindFirstResponder(this UIView? superview)
+		internal static UIView? FindFirstResponder(this UIView? superview, Func<UIView, bool>? predicate = null)
 		{
 			if (superview is null)
 				return null;
 
-			if (superview.IsFirstResponder)
+			if (superview.IsFirstResponder && (predicate?.Invoke(superview) ?? true))
 				return superview;
 
 			foreach (var subview in superview.Subviews)