[iOS] Fix for DatePicker FlowDirection Not Working on iOS

src/Controls/tests/TestCases.HostApp/Issues/Issue30065.cs

@@ -0,0 +1,50 @@
+namespace Controls.TestCases.HostApp.Issues;
+
+[Issue(IssueTracker.Github, 30065, "DatePicker Ignores FlowDirection When Set to RightToLeft or MatchParent", PlatformAffected.iOS)]
+public class Issue30065 : ContentPage
+{
+	public Issue30065()
+	{
+		DatePicker rtlDatePicker = new DatePicker
+		{
+			Date = new DateTime(2002, 5, 14),
+			Format = "MM/dd/yyyy",
+			WidthRequest = 300,
+			FlowDirection = FlowDirection.RightToLeft,
+		};
+
+		DatePicker ltrDatePicker = new DatePicker
+		{
+			Date = new DateTime(2002, 5, 14),
+			Format = "MM/dd/yyyy",
+			WidthRequest = 300,
+			FlowDirection = FlowDirection.LeftToRight,
+		};
+
+		Button toggleButton = new Button
+		{
+			AutomationId = "ToggleFlowDirectionBtn",
+			Text = "Toggle FlowDirection",
+		};
+
+		toggleButton.Clicked += (s, e) =>
+		{
+			rtlDatePicker.FlowDirection = FlowDirection.LeftToRight;
+			ltrDatePicker.FlowDirection = FlowDirection.RightToLeft;
+		};
+
+		VerticalStackLayout verticalStackLayout = new VerticalStackLayout
+		{
+			Padding = new Thickness(20),
+			VerticalOptions = LayoutOptions.Center,
+			Children =
+			{
+				rtlDatePicker,
+				ltrDatePicker,
+				toggleButton
+			}
+		};
+
+		Content = verticalStackLayout;
+	}
+}

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue30065.cs

@@ -0,0 +1,25 @@
+#if TEST_FAILS_ON_CATALYST  // Issue Link - https://github.com/dotnet/maui/issues/30163
+using NUnit.Framework;
+using UITest.Appium;
+using UITest.Core;
+
+namespace Microsoft.Maui.TestCases.Tests.Issues;
+
+public class Issue30065 : _IssuesUITest
+{
+	public Issue30065(TestDevice device) : base(device)
+	{
+	}
+
+	public override string Issue => "DatePicker Ignores FlowDirection When Set to RightToLeft or MatchParent";
+
+	[Test]
+	[Category(UITestCategories.DatePicker)]
+	public void ValidateDatePickerFlowDirection()
+	{
+		App.WaitForElement("ToggleFlowDirectionBtn");
+		App.Tap("ToggleFlowDirectionBtn");
+		VerifyScreenshot();
+	}
+}
+#endif

src/Core/src/Handlers/DatePicker/DatePickerHandler.MacCatalyst.cs

@@ -70,7 +70,7 @@ public static partial void MapTextColor(IDatePickerHandler handler, IDatePicker
 
 		}
 
-		public static partial void MapFlowDirection(DatePickerHandler handler, IDatePicker datePicker)
+		public static partial void MapFlowDirection(IDatePickerHandler handler, IDatePicker datePicker)
 		{
 
 		}

src/Core/src/Handlers/DatePicker/DatePickerHandler.cs

@@ -74,7 +74,7 @@ public DatePickerHandler(IPropertyMapper? mapper, CommandMapper? commandMapper)
 		/// </summary>
 		/// <param name="handler">The associated handler.</param>
 		/// <param name="datePicker">The associated <see cref="IDatePicker"/> instance.</param>
-		public static partial void MapFlowDirection(DatePickerHandler handler, IDatePicker datePicker);
+		public static partial void MapFlowDirection(IDatePickerHandler handler, IDatePicker datePicker);
 #endif
 
 		/// <summary>

src/Core/src/Handlers/DatePicker/DatePickerHandler.iOS.cs

@@ -80,7 +80,7 @@ public static partial void MapTextColor(IDatePickerHandler handler, IDatePicker
 			handler.PlatformView?.UpdateTextColor(datePicker);
 		}
 
-		public static partial void MapFlowDirection(DatePickerHandler handler, IDatePicker datePicker)
+		public static partial void MapFlowDirection(IDatePickerHandler handler, IDatePicker datePicker)
 		{
 			handler.PlatformView?.UpdateFlowDirection(datePicker);
 			handler.PlatformView?.UpdateTextAlignment(datePicker);

src/Core/src/Platform/iOS/DatePickerExtensions.cs

@@ -154,7 +154,12 @@ public static void UpdateMaximumDate(this UIDatePicker platformDatePicker, IDate
 
 	public static void UpdateTextAlignment(this MauiDatePicker nativeDatePicker, IDatePicker datePicker)
 	{
-		// TODO: Update TextAlignment based on the EffectiveFlowDirection property.
+		var alignment = nativeDatePicker.EffectiveUserInterfaceLayoutDirection ==
+				UIUserInterfaceLayoutDirection.RightToLeft
+				? UITextAlignment.Right
+				: UITextAlignment.Left;
+
+		nativeDatePicker.TextAlignment = alignment;
 	}
 
 	internal static void UpdateIsOpen(this MauiDatePicker platformDatePicker, IDatePicker datePicker)

src/Core/src/PublicAPI/net-ios/PublicAPI.Shipped.txt

@@ -2642,7 +2642,6 @@ static Microsoft.Maui.Handlers.ContextFlyoutItemHandlerUpdate.operator ==(Micros
 static Microsoft.Maui.Handlers.DatePickerHandler.CommandMapper -> Microsoft.Maui.CommandMapper<Microsoft.Maui.IPicker!, Microsoft.Maui.Handlers.IDatePickerHandler!>!
 static Microsoft.Maui.Handlers.DatePickerHandler.MapCharacterSpacing(Microsoft.Maui.Handlers.IDatePickerHandler! handler, Microsoft.Maui.IDatePicker! datePicker) -> void
 static Microsoft.Maui.Handlers.DatePickerHandler.MapDate(Microsoft.Maui.Handlers.IDatePickerHandler! handler, Microsoft.Maui.IDatePicker! datePicker) -> void
-static Microsoft.Maui.Handlers.DatePickerHandler.MapFlowDirection(Microsoft.Maui.Handlers.DatePickerHandler! handler, Microsoft.Maui.IDatePicker! datePicker) -> void
 static Microsoft.Maui.Handlers.DatePickerHandler.MapFont(Microsoft.Maui.Handlers.IDatePickerHandler! handler, Microsoft.Maui.IDatePicker! datePicker) -> void
 static Microsoft.Maui.Handlers.DatePickerHandler.MapFormat(Microsoft.Maui.Handlers.IDatePickerHandler! handler, Microsoft.Maui.IDatePicker! datePicker) -> void
 static Microsoft.Maui.Handlers.DatePickerHandler.MapMaximumDate(Microsoft.Maui.Handlers.IDatePickerHandler! handler, Microsoft.Maui.IDatePicker! datePicker) -> void

src/Core/src/PublicAPI/net-ios/PublicAPI.Unshipped.txt

@@ -1,2 +1,4 @@
 #nullable enable
 override Microsoft.Maui.Platform.MauiView.DidUpdateFocus(UIKit.UIFocusUpdateContext! context, UIKit.UIFocusAnimationCoordinator! coordinator) -> void
+*REMOVED*static Microsoft.Maui.Handlers.DatePickerHandler.MapFlowDirection(Microsoft.Maui.Handlers.DatePickerHandler! handler, Microsoft.Maui.IDatePicker! datePicker) -> void
+static Microsoft.Maui.Handlers.DatePickerHandler.MapFlowDirection(Microsoft.Maui.Handlers.IDatePickerHandler! handler, Microsoft.Maui.IDatePicker! datePicker) -> void

src/Core/src/PublicAPI/net-maccatalyst/PublicAPI.Shipped.txt

@@ -2645,7 +2645,6 @@ static Microsoft.Maui.Handlers.ContextFlyoutItemHandlerUpdate.operator ==(Micros
 static Microsoft.Maui.Handlers.DatePickerHandler.CommandMapper -> Microsoft.Maui.CommandMapper<Microsoft.Maui.IPicker!, Microsoft.Maui.Handlers.IDatePickerHandler!>!
 static Microsoft.Maui.Handlers.DatePickerHandler.MapCharacterSpacing(Microsoft.Maui.Handlers.IDatePickerHandler! handler, Microsoft.Maui.IDatePicker! datePicker) -> void
 static Microsoft.Maui.Handlers.DatePickerHandler.MapDate(Microsoft.Maui.Handlers.IDatePickerHandler! handler, Microsoft.Maui.IDatePicker! datePicker) -> void
-static Microsoft.Maui.Handlers.DatePickerHandler.MapFlowDirection(Microsoft.Maui.Handlers.DatePickerHandler! handler, Microsoft.Maui.IDatePicker! datePicker) -> void
 static Microsoft.Maui.Handlers.DatePickerHandler.MapFont(Microsoft.Maui.Handlers.IDatePickerHandler! handler, Microsoft.Maui.IDatePicker! datePicker) -> void
 static Microsoft.Maui.Handlers.DatePickerHandler.MapFormat(Microsoft.Maui.Handlers.IDatePickerHandler! handler, Microsoft.Maui.IDatePicker! datePicker) -> void
 static Microsoft.Maui.Handlers.DatePickerHandler.MapMaximumDate(Microsoft.Maui.Handlers.IDatePickerHandler! handler, Microsoft.Maui.IDatePicker! datePicker) -> void

src/Core/src/PublicAPI/net-maccatalyst/PublicAPI.Unshipped.txt

@@ -1,2 +1,4 @@
 #nullable enable
 override Microsoft.Maui.Platform.MauiView.DidUpdateFocus(UIKit.UIFocusUpdateContext! context, UIKit.UIFocusAnimationCoordinator! coordinator) -> void
+*REMOVED*static Microsoft.Maui.Handlers.DatePickerHandler.MapFlowDirection(Microsoft.Maui.Handlers.DatePickerHandler! handler, Microsoft.Maui.IDatePicker! datePicker) -> void
+static Microsoft.Maui.Handlers.DatePickerHandler.MapFlowDirection(Microsoft.Maui.Handlers.IDatePickerHandler! handler, Microsoft.Maui.IDatePicker! datePicker) -> void