Fix for Switch on Android losing shadow #6798 (#6798)

Xamarin.Forms.Controls/CoreGalleryPages/SwitchCoreGalleryPage.cs

@@ -38,7 +38,7 @@ namespace Xamarin.Forms.Controls
 
 			var thumbColorSwitch = new Switch() { ThumbColor = Color.Yellow };
 			var thumbColorContainer = new ValueViewContainer<Switch>(Test.Switch.ThumbColor, thumbColorSwitch, nameof(Switch.ThumbColor), value => value.ToString());
-			var changeThumbColorButton = new Button { Text = "Change ThumbColor", Command = new Command(() => thumbColorSwitch.ThumbColor = Color.Azure) };
+			var changeThumbColorButton = new Button { Text = "Change ThumbColor", Command = new Command(() => thumbColorSwitch.ThumbColor = Color.Lime) };
 			var clearThumbColorButton = new Button { Text = "Clear ThumbColor", Command = new Command(() => thumbColorSwitch.ThumbColor = Color.Default) };
 			thumbColorContainer.ContainerLayout.Children.Add(changeThumbColorButton);
 			thumbColorContainer.ContainerLayout.Children.Add(clearThumbColorButton);

Xamarin.Forms.Platform.Android/AppCompat/SwitchRenderer.cs

@@ -140,7 +140,7 @@ namespace Xamarin.Forms.Platform.Android.AppCompat
 			if (Element == null)
 				return;
 
-			Control.ThumbDrawable.SetColorFilter(Element.ThumbColor, _defaultThumbColorFilter);
+			Control.ThumbDrawable.SetColorFilter(Element.ThumbColor, _defaultThumbColorFilter, PorterDuff.Mode.Multiply);
 		}
 
 		void HandleToggled(object sender, EventArgs e)

Xamarin.Forms.Platform.Android/Extensions/DrawableExtensions.cs

@@ -27,7 +27,7 @@ namespace Xamarin.Forms.Platform.Android
 			drawable.SetColorFilter(colorFilter);
 		}
 
-		public static void SetColorFilter(this ADrawable drawable, Color color, AColorFilter defaultColorFilter)
+		public static void SetColorFilter(this ADrawable drawable, Color color, AColorFilter defaultColorFilter, PorterDuff.Mode mode)
 		{
 			if (drawable == null)
 				return;
@@ -38,7 +38,7 @@ namespace Xamarin.Forms.Platform.Android
 				return;
 			}
 
-			drawable.SetColorFilter(color.ToAndroid(), PorterDuff.Mode.SrcIn);
+			drawable.SetColorFilter(color.ToAndroid(), mode);
 		}
 	}
 }

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

@@ -180,7 +180,7 @@ namespace Xamarin.Forms.Platform.Android
 
 		void UpdateThumbColor()
 		{
-			Control.Thumb.SetColorFilter(Element.ThumbColor, defaultthumbcolorfilter);
+			Control.Thumb.SetColorFilter(Element.ThumbColor, defaultthumbcolorfilter, PorterDuff.Mode.SrcIn);
 		}
 
 		void UpdateThumbImage()

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

@@ -138,7 +138,7 @@ namespace Xamarin.Forms.Platform.Android
 			if (Element == null)
 				return;
 
-			Control.ThumbDrawable.SetColorFilter(Element.ThumbColor, _defaultThumbColorFilter);
+			Control.ThumbDrawable.SetColorFilter(Element.ThumbColor, _defaultThumbColorFilter, PorterDuff.Mode.Multiply);
 		}
 
 		void HandleToggled(object sender, EventArgs e)