[Android] Fix gif animation initial state (#14295)

* Fix gifs initial animation state on Android

* Device tests

* Auto-format source code

* Updated sample

* Updated device tests

* Refactor code

* Update src/Core/src/Handlers/Image/ImageHandler.Android.cs

Co-authored-by: Matthew Leibowitz <[email protected]>

* Remove unnecessary change

* Fix build errors

* Merge branch 'main' into fix-7019

* Fix merge mistake

---------

Co-authored-by: GitHub Actions Autoformatter <[email protected]>
Co-authored-by: Javier Suárez <[email protected]>
Co-authored-by: Matthew Leibowitz <[email protected]>
Co-authored-by: Gerald Versluis <[email protected]>

Author: 4 people

src/Controls/samples/Controls.Sample/Pages/Controls/ImagePage.xaml

@@ -48,6 +48,16 @@
                         </FontImageSource>
                     </Image.Source>
                 </Image>
+                <Label
+                    Text="Animating a gif"
+                    Style="{StaticResource Headline}"/>
+                <Switch 
+                    x:Name="IsAnimationPlayingSwitch"
+                    IsToggled="True"/>
+                <Image 
+                    Source="animated_heart.gif"
+                    WidthRequest="200"
+                    IsAnimationPlaying="{Binding Source={x:Reference IsAnimationPlayingSwitch},Path=IsToggled}" />
                 <Label
                     Text="Stream Source"
                     Style="{StaticResource Headline}"/>

src/Core/src/Handlers/Image/ImageHandler.Android.cs

@@ -48,8 +48,13 @@ public static void MapIsAnimationPlaying(IImageHandler handler, IImage image) =>
 		public static void MapSource(IImageHandler handler, IImage image) =>
 			MapSourceAsync(handler, image).FireAndForget(handler);
 
-		public static Task MapSourceAsync(IImageHandler handler, IImage image) =>
-			handler.SourceLoader.UpdateImageSourceAsync();
+		public static Task MapSourceAsync(IImageHandler handler, IImage image)
+		{
+			return handler
+				.SourceLoader
+				.UpdateImageSourceAsync()
+				.ContinueWith((action) => handler.UpdateValue(nameof(IImage.IsAnimationPlaying)));
+		}
 
 		public override void PlatformArrange(Graphics.Rect frame)
 		{

src/Core/tests/DeviceTests/Handlers/Image/ImageHandlerTests.cs

@@ -111,8 +111,8 @@ await InvokeOnMainThreadAsync(async () =>
 		}
 
 		[Theory(
-#if __IOS__ || __ANDROID__
-			Skip = "Animated GIFs are not yet supported on iOS. Test failing on ANDROID"
+#if __ANDROID_23__ || __IOS__
+			Skip = "Animated GIFs are not yet supported."
 #endif
 		)]
 		[InlineData("animated_heart.gif", true)]