Fix PopoverPresentationController for action sheet

src/Controls/samples/Controls.Sample.UITests/Issues/Issues16321.xaml

@@ -6,6 +6,8 @@
     <VerticalStackLayout>
       <Label Text="After clicking each button you should see an alert"></Label>
       <Button Text="Open Alert With Modals" AutomationId="OpenAlertWithModals" Clicked="OpenAlertWithModals"></Button>
+      <Button Text="Open Action Sheet With Modals" AutomationId="OpenActionSheetWithModals" Clicked="OpenActionSheetWithModals"></Button>
       <Button Text="Open Alert With New UIWindow" AutomationId="OpenAlertWithNewUIWindow" Clicked="OpenAlertWithNewUIWindow"></Button>
+      <Button Text="Open Action Sheet With New UIWindow" AutomationId="OpenActionSheetWithNewUIWindow" Clicked="OpenActionSheetWithNewUIWindow"></Button>
     </VerticalStackLayout>
   </ContentPage>

src/Controls/samples/Controls.Sample.UITests/Issues/Issues16321.xaml.cs

@@ -4,6 +4,8 @@
 using Microsoft.Maui;
 using System.Linq;
 using System;
+using System.Threading.Tasks;
+
 
 #if IOS
 using UIKit;
@@ -38,8 +40,18 @@ async void OpenAlertWithModals(System.Object sender, System.EventArgs e)
 			await Navigation.PopModalAsync();
 		}
 
+		async void OpenActionSheetWithModals(System.Object sender, System.EventArgs e)
+		{
+			await Navigation.PushModalAsync(new ContentPage());
+			await Navigation.PushModalAsync(new ContentPage());
+			await this.DisplayActionSheet("hello", "message", "Cancel", "Option 1", "Option 2");
+			await Navigation.PopModalAsync();
+			await Navigation.PopModalAsync();
+		}
+
 #if IOS
-		async void OpenAlertWithNewUIWindow(System.Object sender, System.EventArgs e)
+
+		async void OpenPrompt(System.Object sender, System.EventArgs e, Func<Page, Task> promptAction)
 		{
 			var uIWindow = new UIWindow();
 			var keyWindow = (this.Window.Handler.PlatformView as UIWindow);
@@ -59,7 +71,7 @@ async void OpenAlertWithNewUIWindow(System.Object sender, System.EventArgs e)
 			popupVC.ModalTransitionStyle = UIModalTransitionStyle.CoverVertical;
 			await uIWindow.RootViewController.PresentViewControllerAsync(popupVC, false);
 
-			await page.DisplayAlert("hello", "message", "Cancel");
+			await promptAction.Invoke(page);
 
 			var rvc = uIWindow.RootViewController;
 
@@ -74,11 +86,33 @@ async void OpenAlertWithNewUIWindow(System.Object sender, System.EventArgs e)
 			keyWindow.WindowLevel = UIWindowLevel.Normal;
 			this.RemoveLogicalChild(page);
 		}
-#else
-			async void OpenAlertWithNewUIWindow(System.Object sender, System.EventArgs e)
+
+		void OpenAlertWithNewUIWindow(System.Object sender, System.EventArgs e)
+		{
+			OpenPrompt(sender, e, (page) =>
 			{
-				await this.DisplayAlert("hello", "message", "Cancel");
-			}
+				return page.DisplayAlert("hello", "message", "Cancel");
+			});
+		}
+
+
+		void OpenActionSheetWithNewUIWindow(System.Object sender, System.EventArgs e)
+		{
+			OpenPrompt(sender, e, (page) =>
+			{
+				return page.DisplayActionSheet("hello", "message", "Cancel", "Option 1", "Option 2");
+			});
+		}
+#else
+		async void OpenActionSheetWithNewUIWindow(System.Object sender, System.EventArgs e)
+		{
+			await this.DisplayActionSheet("hello", "message", "Cancel", "Option 1", "Option 2");
+		}
+
+		async void OpenAlertWithNewUIWindow(System.Object sender, System.EventArgs e)
+		{
+			await this.DisplayAlert("hello", "message", "Cancel");
+		}
 #endif
 	}
 }

src/Controls/src/Core/Platform/AlertManager/AlertManager.iOS.cs

@@ -177,32 +177,34 @@ void PresentActionSheet(Page sender, ActionSheetArguments arguments)
 
 			static void PresentPopUp(Page sender, Window virtualView, UIWindow platformView, UIAlertController alert, ActionSheetArguments arguments = null)
 			{
+				UIWindow presentingWindow = platformView;
+
+				if (sender.Handler is IPlatformViewHandler pvh &&
+					pvh.PlatformView?.Window is UIWindow senderPageWindow &&
+					senderPageWindow != platformView &&
+					senderPageWindow.RootViewController is not null)
+				{
+					presentingWindow = senderPageWindow;
+				}
+
 				if (UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Pad && arguments != null)
 				{
+					var topViewController = GetTopUIViewController(presentingWindow);
 					UIDevice.CurrentDevice.BeginGeneratingDeviceOrientationNotifications();
 					var observer = NSNotificationCenter.DefaultCenter.AddObserver(UIDevice.OrientationDidChangeNotification,
-						n => { alert.PopoverPresentationController.SourceRect = platformView.RootViewController.View.Bounds; });
+						n => { alert.PopoverPresentationController.SourceRect = topViewController.View.Bounds; });
 
 					arguments.Result.Task.ContinueWith(t =>
 					{
 						NSNotificationCenter.DefaultCenter.RemoveObserver(observer);
 						UIDevice.CurrentDevice.EndGeneratingDeviceOrientationNotifications();
 					}, TaskScheduler.FromCurrentSynchronizationContext());
 
-					alert.PopoverPresentationController.SourceView = platformView.RootViewController.View;
-					alert.PopoverPresentationController.SourceRect = platformView.RootViewController.View.Bounds;
+					alert.PopoverPresentationController.SourceView = topViewController.View;
+					alert.PopoverPresentationController.SourceRect = topViewController.View.Bounds;
 					alert.PopoverPresentationController.PermittedArrowDirections = 0; // No arrow
 				}
 
-				UIWindow presentingWindow = platformView;
-				if (sender.Handler is IPlatformViewHandler pvh &&
-					pvh.PlatformView?.Window is UIWindow senderPageWindow &&
-					senderPageWindow != platformView &&
-					senderPageWindow.RootViewController is not null)
-				{
-					presentingWindow = senderPageWindow;
-				}
-
 				presentingWindow.BeginInvokeOnMainThread(() =>
 				{
 					GetTopUIViewController(presentingWindow)

src/Controls/tests/UITests/Tests/Issues/Issue16321.cs

@@ -11,29 +11,20 @@ public Issue16321(TestDevice device) : base(device) { }
 		public override string Issue => "Alerts Open on top of current presented view";
 
 		[Test]
+		[TestCase("OpenAlertWithModals")]
+		[TestCase("OpenAlertWithNewUIWindow")]
+		[TestCase("OpenActionSheetWithNewUIWindow")]
+		[TestCase("OpenActionSheetWithModals")]
 		[Category(UITestCategories.DisplayAlert)]
-		public void OpenAlertWithModals()
+		public void OpenAlertWithModals(string testCase)
 		{
 			this.IgnoreIfPlatforms(new[]
 			{
 				TestDevice.Mac, TestDevice.Windows, TestDevice.Android
 			});
 
-			App.WaitForElement("OpenAlertWithModals").Click();
-			App.WaitForElement("Cancel").Click();
-		}
-
-		[Test]
-		[Category(UITestCategories.DisplayAlert)]
-		public void OpenAlertWithNewUIWindow()
-		{
-			this.IgnoreIfPlatforms(new[]
-			{
-				TestDevice.Mac, TestDevice.Windows, TestDevice.Android
-			});
-
-			App.WaitForElement("OpenAlertWithNewUIWindow").Click();
-			App.WaitForElement("Cancel").Click();
+			App.WaitForElement(testCase).Tap();
+			App.WaitForElement("Cancel").Tap();
 		}
 	}
-}
+}