Donet 9.0 android lottianimation not playing in bottomsheet

[Th3L0x]

Lottianimation (using SkiaSharp SkLottiView) in a bottomsheet does not start playing.

[Th3L0x]

Has this happened to anyone else?

[lucacivale]

@Th3L0x Can you provide a small repro for me? Does this happen also with .net 8?

[Th3L0x]

Sure, currently I'm not at home so I couldnt check if its working or not, but you will get the idea. As I remember this happened on dotnet 8.0 as well. BottomSheetTest.zip

[lucacivale]

@Th3L0x thanks, but your sample isn't working. Could you provide me something working?

[Th3L0x]

Sorry, I think the deploying was not enabled in debug mode. I put a red background where the animation should be, it is also on the MainPage, and it works there.

BottomSheetTest.zip

[lucacivale]

@Th3L0x found the reason. SKLottieView.Window is null and therefore the animation does not start playing. I'm not sure if I want to release a new bug fix release since im working on a new major release. Is it possible that you set the Window until the new version is released? Either window.AddLogicalChild(lottieView) or set the window on the top view of your content.

[Th3L0x]

Thank you, I'm not sure if this is what you meant for but this way its working:

 //BOTTOMSHEET BUG, will fixed in next release
 private ScrollView? _scrollView;
 private void ScrollView_BindingContextChanged(object sender, EventArgs e)
 {
     try
     {
         if (sender is ScrollView view && Shell.Current.CurrentPage?.Window != null)
         {
             _scrollView = view;
             var lottiPrompt = view.FindByName<SKLottieView>("lottiPrompt");
             var lottiLoad = view.FindByName<SKLottieView>("lottiLoad");
             if (lottiPrompt != null)
             {
                 Shell.Current.CurrentPage?.Window.AddLogicalChild(lottiPrompt);
                 lottiPrompt.BindingContext = this.BindingContext;
             }
             if (lottiLoad != null)
             {
                 Shell.Current.CurrentPage?.Window.AddLogicalChild(lottiLoad);
                 lottiLoad.BindingContext = this.BindingContext;
             }
         }
     }
     catch (Exception ex)
     {
         System.Diagnostics.Debug.WriteLine(ex);
     }
 }

 private void BottomSheet_Closed(object sender, EventArgs e)
 {
     try
     {
         if (_scrollView != null && Shell.Current.CurrentPage?.Window != null)
         {
             var lottiPrompt = _scrollView.FindByName<SKLottieView>("lottiPrompt");
             var lottiLoad = _scrollView.FindByName<SKLottieView>("lottiLoad");
             if (lottiPrompt != null)
             {
                 Shell.Current.CurrentPage?.Window.RemoveLogicalChild(lottiPrompt);
             }
             if (lottiLoad != null)
             {
                 Shell.Current.CurrentPage?.Window.RemoveLogicalChild(lottiLoad);
             }
             _scrollView = null;
         }
     }
     catch (Exception ex)
     {
         System.Diagnostics.Debug.WriteLine(ex);
     }
 }
 //BOTTOMSHEET BUG, will fixed in next release