[iOS,MacCatalyst] Fix for SwipeView.Open() throwing an ArgumentException on the second programmatic call

src/Controls/tests/TestCases.HostApp/Issues/Issue34917.cs

@@ -0,0 +1,117 @@
+namespace Maui.Controls.Sample.Issues;
+
+[Issue(IssueTracker.Github, 34917, "[net 11.0][iOS,MacCatalyst] SwipeView.Open() throws ArgumentException on second programmatic call", PlatformAffected.iOS | PlatformAffected.macOS)]
+public class Issue34917 : ContentPage
+{
+	const string OpenRightButtonId = "OpenSwipeButton";
+	const string OpenBottomButtonId = "OpenBottomSwipeButton";
+	const string CloseButtonId = "CloseSwipeButton";
+	const string StatusLabelId = "StatusLabel";
+
+	readonly SwipeView _swipeView;
+
+	public Issue34917()
+	{
+		var openRightButton = new Button
+		{
+			Text = "Open RightItems",
+			AutomationId = OpenRightButtonId
+		};
+
+		var openBottomButton = new Button
+		{
+			Text = "Open BottomItems",
+			AutomationId = OpenBottomButtonId
+		};
+
+		var closeButton = new Button
+		{
+			Text = "Close SwipeView",
+			AutomationId = CloseButtonId
+		};
+
+		var statusLabel = new Label
+		{
+			Text = "Ready",
+			AutomationId = StatusLabelId,
+			HorizontalOptions = LayoutOptions.Center
+		};
+
+		var rightSwipeItem = new SwipeItem
+		{
+			Text = "Right Action",
+			BackgroundColor = Colors.LightBlue
+		};
+
+		var bottomSwipeItem = new SwipeItem
+		{
+			Text = "Bottom Action",
+			BackgroundColor = Colors.LightGreen
+		};
+
+		_swipeView = new SwipeView
+		{
+			HeightRequest = 60,
+			RightItems = new SwipeItems { rightSwipeItem },
+			BottomItems = new SwipeItems { bottomSwipeItem },
+			Content = new Grid
+			{
+				BackgroundColor = Colors.LightGray,
+				Children =
+				{
+					new Label
+					{
+						Text = "Swipe content",
+						HorizontalOptions = LayoutOptions.Center,
+						VerticalOptions = LayoutOptions.Center
+					}
+				}
+			}
+		};
+
+		openRightButton.Clicked += (s, e) =>
+		{
+			try
+			{
+				_swipeView.Open(OpenSwipeItem.RightItems);
+				statusLabel.Text = "Success";
+			}
+			catch (Exception ex)
+			{
+				statusLabel.Text = $"Error: {ex.GetType().Name}";
+			}
+		};
+
+		openBottomButton.Clicked += (s, e) =>
+		{
+			try
+			{
+				_swipeView.Open(OpenSwipeItem.BottomItems);
+				statusLabel.Text = "Success";
+			}
+			catch (Exception ex)
+			{
+				statusLabel.Text = $"Error: {ex.GetType().Name}";
+			}
+		};
+
+		closeButton.Clicked += (s, e) =>
+		{
+			_swipeView.Close();
+		};
+
+		Content = new VerticalStackLayout
+		{
+			Spacing = 12,
+			Padding = new Thickness(20),
+			Children =
+			{
+				openRightButton,
+				openBottomButton,
+				closeButton,
+				_swipeView,
+				statusLabel
+			}
+		};
+	}
+}

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue34917.cs

@@ -0,0 +1,56 @@
+using NUnit.Framework;
+using UITest.Appium;
+using UITest.Core;
+
+namespace Microsoft.Maui.TestCases.Tests.Issues;
+
+public class Issue34917 : _IssuesUITest
+{
+	public Issue34917(TestDevice device) : base(device) { }
+
+	public override string Issue => "[net 11.0][iOS,MacCatalyst] SwipeView.Open() throws ArgumentException on second programmatic call";
+
+	[Test]
+	[Category(UITestCategories.SwipeView)]
+	public void SwipeViewOpenRightDoesNotThrowOnSecondCall()
+	{
+		App.WaitForElement(OpenRightButtonId);
+
+		App.Tap(OpenRightButtonId);
+		App.WaitForElement(StatusLabelId);
+		App.WaitForTextToBePresentInElement(StatusLabelId, "Success");
+		Assert.That(App.FindElement(StatusLabelId).GetText(), Is.EqualTo("Success"),
+			"First Open(RightItems) call should succeed.");
+
+		App.Tap(OpenRightButtonId);
+		App.WaitForTextToBePresentInElement(StatusLabelId, "Success");
+		Assert.That(App.FindElement(StatusLabelId).GetText(), Is.EqualTo("Success"),
+			"Second consecutive Open(RightItems) call should not throw an exception.");
+	}
+
+	[Test]
+	[Category(UITestCategories.SwipeView)]
+	public void SwipeViewOpenBottomDoesNotThrowOnSecondCall()
+	{
+		App.WaitForElement(OpenBottomButtonId);
+		App.WaitForElement(CloseButtonId);
+
+		App.Tap(CloseButtonId);
+
+		App.Tap(OpenBottomButtonId);
+		App.WaitForElement(StatusLabelId);
+		App.WaitForTextToBePresentInElement(StatusLabelId, "Success");
+		Assert.That(App.FindElement(StatusLabelId).GetText(), Is.EqualTo("Success"),
+			"First Open(BottomItems) call should succeed.");
+
+		App.Tap(OpenBottomButtonId);
+		App.WaitForTextToBePresentInElement(StatusLabelId, "Success");
+		Assert.That(App.FindElement(StatusLabelId).GetText(), Is.EqualTo("Success"),
+			"Second consecutive Open(BottomItems) call should not throw an exception.");
+	}
+
+	const string OpenRightButtonId = "OpenSwipeButton";
+	const string OpenBottomButtonId = "OpenBottomSwipeButton";
+	const string CloseButtonId = "CloseSwipeButton";
+	const string StatusLabelId = "StatusLabel";
+}

src/Core/src/Platform/iOS/MauiSwipeView.cs

@@ -295,6 +295,7 @@ void UpdateSwipeItems()
 				return;
 
 			_swipeItemsRect = new List<CGRect>();
+			_swipeItems.Clear();
 
 			double swipeItemsWidth;
 
@@ -1165,8 +1166,6 @@ internal void ProgrammaticallyOpenSwipeItem(OpenSwipeItem openSwipeItem, bool an
 			}
 
 			Swipe(animated);
-
-			_swipeOffset = Math.Abs(_swipeOffset);
 		}
 
 		void UpdateOffset(double swipeOffset)