IOS Linker fixes inside Xamarin.Forms

Xamarin.Forms.ControlGallery.Android/Xamarin.Forms.ControlGallery.Android.csproj

@@ -65,12 +65,6 @@
     <AndroidSupportedAbis>armeabi-v7a,x86</AndroidSupportedAbis>
     <AndroidEnableMultiDex>true</AndroidEnableMultiDex>
   </PropertyGroup>
-  <PropertyGroup Condition=" '$(CI)' == 'True' ">
-    <AndroidLinkMode>Full</AndroidLinkMode>
-    <AndroidUseSharedRuntime>False</AndroidUseSharedRuntime>
-    <EmbedAssembliesIntoApk>True</EmbedAssembliesIntoApk>
-    <AndroidSupportedAbis>armeabi-v7a,x86</AndroidSupportedAbis>
-  </PropertyGroup>
   <ItemGroup>
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="Mono.Android" />

Xamarin.Forms.ControlGallery.iOS/Xamarin.Forms.ControlGallery.iOS.csproj

@@ -96,6 +96,9 @@
     <CodesignEntitlements>Entitlements.plist</CodesignEntitlements>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(TF_BUILD)' == 'true' OR '$(CI)' == 'true'">
+    <MtouchLink>Full</MtouchLink>
+  </PropertyGroup>
   <PropertyGroup Condition=" '$(RunConfiguration)' == 'Default' ">
     <AppExtensionDebugBundleId />
   </PropertyGroup>

Xamarin.Forms.Platform.iOS/CollectionView/CarouselViewRenderer.cs

@@ -1,11 +1,13 @@
 using System.ComponentModel;
+using Foundation;
 
 namespace Xamarin.Forms.Platform.iOS
 {
 	public class CarouselViewRenderer : ItemsViewRenderer<CarouselView, CarouselViewController>
 	{
 		CarouselView CarouselView => Element;
 
+		[Preserve(Conditional = true)]
 		public CarouselViewRenderer()
 		{
 			CarouselView.VerifyCarouselViewFlagEnabled(nameof(CarouselViewRenderer));

Xamarin.Forms.Platform.iOS/LinkerSafeAttribute.cs

@@ -0,0 +1,14 @@
+using System;
+using System.ComponentModel;
+
+namespace Xamarin.Forms.Internals
+{
+	[AttributeUsage(AttributeTargets.All)]
+	[EditorBrowsable(EditorBrowsableState.Never)]
+	class LinkerSafeAttribute : Attribute
+	{
+		public LinkerSafeAttribute()
+		{
+		}
+	}
+}

Xamarin.Forms.Platform.iOS/Properties/AssemblyInfo.cs

@@ -59,4 +59,4 @@
 [assembly: Xamarin.Forms.Dependency(typeof(Deserializer))]
 [assembly: Xamarin.Forms.Dependency(typeof(ResourcesProvider))]
 [assembly: ResolutionGroupName("Xamarin")]
-[assembly: Preserve]
+[assembly: LinkerSafe]

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

@@ -8,6 +8,7 @@
 using Xamarin.Forms.PlatformConfiguration.iOSSpecific;
 using Specifics = Xamarin.Forms.PlatformConfiguration.iOSSpecific;
 using SizeF = CoreGraphics.CGSize;
+using PreserveAttribute = Foundation.PreserveAttribute;
 
 namespace Xamarin.Forms.Platform.iOS
 {
@@ -35,6 +36,7 @@ public class ButtonRenderer : ViewRenderer<Button, UIButton>, IImageVisualElemen
 		IImageVisualElementRenderer IButtonLayoutRenderer.ImageVisualElementRenderer => this;
 		nfloat IButtonLayoutRenderer.MinimumHeight => _minimumButtonHeight;
 
+		[Preserve(Conditional = true)]
 		public ButtonRenderer()
 		{
 			BorderElementManager.Init(this);

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

@@ -21,6 +21,7 @@ public class CarouselPageRenderer : UIViewController, IVisualElementRenderer
 		VisualElementTracker _tracker;
 		Page _previousPage;
 
+		[Preserve(Conditional = true)]
 		public CarouselPageRenderer()
 		{
 		}

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

@@ -1,9 +1,11 @@
 using System;
+using Foundation;
 
 namespace Xamarin.Forms.Platform.iOS
 {
 	public class CheckBoxRenderer : CheckBoxRendererBase<FormsCheckBox>
 	{
+		[Preserve(Conditional = true)]
 		public CheckBoxRenderer()
 		{
 		}

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

@@ -14,6 +14,7 @@ public class EditorRenderer : EditorRendererBase<UITextView>
 
 		UILabel _placeholderLabel;
 
+		[Preserve(Conditional = true)]
 		public EditorRenderer()
 		{
 			Frame = new RectangleF(0, 20, 320, 40);

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

@@ -12,6 +12,7 @@ namespace Xamarin.Forms.Platform.iOS
 {
 	public class EntryRenderer : EntryRendererBase<UITextField>
 	{
+		[Preserve(Conditional = true)]
 		public EntryRenderer()
 		{
 			Frame = new RectangleF(0, 20, 320, 40);

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

@@ -2,6 +2,7 @@
 using System.Drawing;
 using CoreAnimation;
 using CoreGraphics;
+using Foundation;
 using UIKit;
 
 namespace Xamarin.Forms.Platform.iOS
@@ -88,12 +89,14 @@ public override void LayoutSubviews()
 			base.LayoutSubviews();
 		}
 
+		[Preserve(Conditional = true)]
 		class ShadowView : UIView
 		{
 			CALayer _shadowee;
 			CGRect _previousBounds;
 			CGRect _previousFrame;
 
+			[Preserve(Conditional = true)]
 			public ShadowView(CALayer shadowee)
 			{
 				_shadowee = shadowee;

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

@@ -22,6 +22,7 @@ public class ImageButtonRenderer : ViewRenderer<ImageButton, UIButton>, IImageVi
 		readonly nfloat _minimumButtonHeight = 44; // Apple docs
 
 
+		[Preserve(Conditional = true)]
 		public ImageButtonRenderer() : base()
 		{
 			ButtonElementManager.Init(this);

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

@@ -8,6 +8,7 @@
 using UIKit;
 using Xamarin.Forms.Internals;
 using RectangleF = CoreGraphics.CGRect;
+using PreserveAttribute = Foundation.PreserveAttribute;
 
 namespace Xamarin.Forms.Platform.iOS
 {
@@ -32,6 +33,7 @@ public class ImageRenderer : ViewRenderer<Image, FormsUIImageView>, IImageVisual
 	{
 		bool _isDisposed;
 
+		[Preserve(Conditional = true)]
 		public ImageRenderer() : base()
 		{
 			ImageElementManager.Init(this);

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

@@ -34,6 +34,7 @@ public class NavigationRenderer : UINavigationController, IVisualElementRenderer
 		UIImage _defaultNavBarShadowImage;
 		UIImage _defaultNavBarBackImage;
 
+		[Preserve(Conditional = true)]
 		public NavigationRenderer() : base(typeof(FormsNavigationBar), null)
 		{
 			MessagingCenter.Subscribe<IVisualElementRenderer>(this, UpdateToolbarButtons, sender =>

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

@@ -30,6 +30,7 @@ public class PageRenderer : UIViewController, IVisualElementRenderer, IEffectCon
 		Thickness _userPadding = default(Thickness);
 		bool _userOverriddenSafeArea = false;
 
+		[Preserve(Conditional = true)]
 		public PageRenderer()
 		{
 		}

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

@@ -28,6 +28,7 @@ public class PhoneMasterDetailRenderer : UIViewController, IVisualElementRendere
 		Page Page => Element as Page;
 
 
+		[Preserve(Conditional = true)]
 		public PhoneMasterDetailRenderer()
 		{
 		}

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

@@ -118,7 +118,7 @@ bool TryOffsetRefresh(UIView view, bool refreshing)
 				return true;
 			}
 
-			if (view is UIWebView)
+			if (view is WkWebViewRenderer)
 			{
 				return true;
 			}
@@ -155,7 +155,7 @@ bool TryInsertRefresh(UIView view, int index = 0)
 				return true;
 			}
 
-			if (view is UIWebView webView)
+			if (view is WkWebViewRenderer webView)
 			{
 				webView.ScrollView.InsertSubview(_refreshControl, index);
 				return true;

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

@@ -23,6 +23,7 @@ public class ScrollViewRenderer : UIScrollView, IVisualElementRenderer, IEffectC
 		bool _checkedForRtlScroll = false;
 		bool _previousLTR = true;
 
+		[Preserve(Conditional = true)]
 		public ScrollViewRenderer() : base(RectangleF.Empty)
 		{
 			ScrollAnimationEnded += HandleScrollAnimationEnded;

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

@@ -7,6 +7,7 @@
 using UIKit;
 using WebKit;
 using Xamarin.Forms.Internals;
+using PreserveAttribute = Foundation.PreserveAttribute;
 using Uri = System.Uri;
 
 namespace Xamarin.Forms.Platform.iOS
@@ -20,10 +21,15 @@ public class WkWebViewRenderer : WKWebView, IVisualElementRenderer, IWebViewDele
 #pragma warning disable 0414
 		VisualElementTracker _tracker;
 #pragma warning restore 0414
+
+
+		[Preserve(Conditional = true)]
 		public WkWebViewRenderer() : base(RectangleF.Empty, new WKWebViewConfiguration())
 		{
 		}
 
+
+		[Preserve(Conditional = true)]
 		public WkWebViewRenderer(WKWebViewConfiguration config) : base(RectangleF.Empty, config)
 		{
 		}

Xamarin.Forms.Platform.iOS/Xamarin.Forms.Platform.iOS.csproj

@@ -165,6 +165,7 @@
     <Compile Include="Extensions\VisualElementExtensions.cs" />
     <Compile Include="Flags.cs" />
     <Compile Include="IOSDeviceInfo.cs" />
+    <Compile Include="LinkerSafeAttribute.cs" />
     <Compile Include="ModalWrapper.cs" />
     <Compile Include="Renderers\FormsCAKeyFrameAnimation.cs" />
     <Compile Include="Renderers\FormsCheckBox.cs" />