Merge branch '3.6.0' into 4.0.0

Xamarin.Forms.Platform.Android/Renderers/ScrollViewRenderer.cs

@@ -381,6 +381,10 @@ namespace Xamarin.Forms.Platform.Android
 			while (IsLayoutRequested)
 			{
 				await Task.Delay(TimeSpan.FromMilliseconds(1));
+				
+				if (_disposed)
+                	return;
+				
 				cycle++;
 
 				if (cycle >= 10)
@@ -541,4 +545,4 @@ namespace Xamarin.Forms.Platform.Android
 
 		bool IScrollView.ScrollBarsInitialized { get; set; } = false;
 	}
-}
+}

Xamarin.Forms.Platform.iOS/ContextActionCell.cs

@@ -146,7 +146,6 @@ namespace Xamarin.Forms.Platform.iOS
 			var handler = new PropertyChangedEventHandler(OnMenuItemPropertyChanged);
 
 			_tableView = tableView;
-			SetupSelection(tableView);
 
 			if (_cell != null)
 			{
@@ -641,7 +640,7 @@ namespace Xamarin.Forms.Platform.iOS
 			return null;
 		}
 
-		static void SetupSelection(UITableView table)
+		internal static void SetupSelection(UITableView table)
 		{
 			if (table.GestureRecognizers == null)
 				return;
@@ -722,4 +721,4 @@ namespace Xamarin.Forms.Platform.iOS
 			}
 		}
 	}
-}
+}

Xamarin.Forms.Platform.iOS/Extensions/Extensions.cs

@@ -1,3 +1,4 @@
+using System;
 using UIKit;
 using Xamarin.Forms.Internals;
 
@@ -74,6 +75,19 @@ namespace Xamarin.Forms.Platform.iOS
 			}
 		}
 
+		internal static UIModalPresentationStyle ToNativeModalPresentationStyle(this PlatformConfiguration.iOSSpecific.UIModalPresentationStyle style)
+		{
+			switch (style)
+			{
+				case PlatformConfiguration.iOSSpecific.UIModalPresentationStyle.FormSheet:
+					return UIModalPresentationStyle.FormSheet;
+				case PlatformConfiguration.iOSSpecific.UIModalPresentationStyle.FullScreen:
+					return UIModalPresentationStyle.FullScreen;
+				default:
+					throw new ArgumentOutOfRangeException(nameof(style));
+			}
+		}
+
 		internal static UIReturnKeyType ToUIReturnKeyType(this ReturnType returnType)
 		{
 			switch (returnType)

Xamarin.Forms.Platform.iOS/Forms.cs

@@ -34,6 +34,7 @@ namespace Xamarin.Forms
 		static bool? s_isiOS9OrNewer;
 		static bool? s_isiOS10OrNewer;
 		static bool? s_isiOS11OrNewer;
+		static bool? s_isiOS13OrNewer;
 		static bool? s_respondsTosetNeedsUpdateOfHomeIndicatorAutoHidden;
 #endif
 
@@ -69,6 +70,16 @@ namespace Xamarin.Forms
 			}
 		}
 
+		internal static bool IsiOS13OrNewer
+		{
+			get
+			{
+				if (!s_isiOS13OrNewer.HasValue)
+					s_isiOS13OrNewer = UIDevice.CurrentDevice.CheckSystemVersion(13, 0);
+				return s_isiOS13OrNewer.Value;
+			}
+		}
+
 		internal static bool RespondsToSetNeedsUpdateOfHomeIndicatorAutoHidden
 		{
 			get
@@ -341,4 +352,4 @@ namespace Xamarin.Forms
 			}
 		}
 	}
-}
+}

Xamarin.Forms.Platform.iOS/PlatformRenderer.cs

@@ -14,8 +14,8 @@ namespace Xamarin.Forms.Platform.iOS
 			_modal = modal;
 
 			var elementConfiguration = modal.Element as IElementConfiguration<Page>;
-			if (elementConfiguration?.On<PlatformConfiguration.iOS>().ModalPresentationStyle() == PlatformConfiguration.iOSSpecific.UIModalPresentationStyle.FormSheet)
-				ModalPresentationStyle = UIKit.UIModalPresentationStyle.FormSheet;
+			var modalPresentationStyle = elementConfiguration?.On<PlatformConfiguration.iOS>()?.ModalPresentationStyle() ?? PlatformConfiguration.iOSSpecific.UIModalPresentationStyle.FullScreen;
+			ModalPresentationStyle = modalPresentationStyle.ToNativeModalPresentationStyle();
 
 			View.BackgroundColor = UIColor.White;
 			View.AddSubview(modal.ViewController.View);

Xamarin.Forms.Platform.iOS/Renderers/ListViewRenderer.cs

@@ -944,6 +944,7 @@ namespace Xamarin.Forms.Platform.iOS
 			protected ListView List;
 			protected ITemplatedItemsView<Cell> TemplatedItemsView => List;
 			bool _isDragging;
+			bool _setupSelection;
 			bool _selectionFromNative;
 			bool _disposed;
 			bool _wasEmpty;
@@ -999,6 +1000,19 @@ namespace Xamarin.Forms.Platform.iOS
 				_isDragging = true;
 			}
 
+			void SetupSelection(UITableViewCell nativeCell, UITableView tableView)
+			{
+				if (!(nativeCell is ContextActionsCell))
+					return;
+
+				if (_setupSelection)
+					return;
+
+				ContextActionsCell.SetupSelection(tableView);
+
+				_setupSelection = true;
+			}
+
 			public override UITableViewCell GetCell(UITableView tableView, NSIndexPath indexPath)
 			{
 				Cell cell;
@@ -1036,6 +1050,8 @@ namespace Xamarin.Forms.Platform.iOS
 				else
 					throw new NotSupportedException();
 
+				SetupSelection(nativeCell, tableView);
+
 				if (List.IsSet(Specifics.SeparatorStyleProperty))
 				{
 					if (List.OnThisPlatform().GetSeparatorStyle() == SeparatorStyle.FullWidth)

Xamarin.Forms.Platform.iOS/Renderers/TabletMasterDetailRenderer.cs

@@ -174,19 +174,39 @@ namespace Xamarin.Forms.Platform.iOS
 		{
 			base.ViewDidLayoutSubviews();
 
-			if (View.Subviews.Length < 2)
+			bool layoutMaster = false;
+			bool layoutDetails = false;
+
+			if (Forms.IsiOS13OrNewer)
+			{
+				layoutMaster = _masterController?.View?.Superview != null;
+				layoutDetails = _detailController?.View?.Superview != null;
+			}
+			else if (View.Subviews.Length < 2)
+			{
 				return;
+			}
+			else
+			{
+				layoutMaster = true;
+				layoutDetails = true;
+			}
 
-			var detailsBounds = _detailController.View.Frame;
-			var masterBounds = _masterController.View.Frame;
+			if (layoutMaster)
+			{
+				var masterBounds = _masterController.View.Frame;
+				_masterWidth = (nfloat)Math.Max(_masterWidth, masterBounds.Width);
 
-			_masterWidth = (nfloat)Math.Max(_masterWidth, masterBounds.Width);
+				if (!masterBounds.IsEmpty)
+					MasterDetailPage.MasterBounds = new Rectangle(0, 0, _masterWidth, masterBounds.Height);
+			}
 
-			if (!masterBounds.IsEmpty)
-				MasterDetailPage.MasterBounds = new Rectangle(0, 0, _masterWidth, masterBounds.Height);
-
-			if (!detailsBounds.IsEmpty)
-				MasterDetailPage.DetailBounds = new Rectangle(0, 0, detailsBounds.Width, detailsBounds.Height);
+			if (layoutDetails)
+			{
+				var detailsBounds = _detailController.View.Frame;
+				if (!detailsBounds.IsEmpty)
+					MasterDetailPage.DetailBounds = new Rectangle(0, 0, detailsBounds.Width, detailsBounds.Height);
+			}
 		}
 
 		public override void ViewDidLoad()