CornerRadius issue with MaterialContentView in CollectionView on Android

The CornerRadius of MaterialContentView is not working properly when using it in a CollectionView. The bug is only on Android. No issue on iOS. Version 2.1.0-beta1 (androidx) with most recent version of xamarin forms.

Here is a sample repro project. repro.zip

Here is a screen record of both actual and expected behavior.

I think the issue is in XamarinBackgroundKit.Android.PathProviders.RoundRectPathProvider. The CanHandledByOutline method uses CornerRadii, but it does not seem to hold the correct value when IsPathDirty==true. https://github.com/ChasakisD/Xamarin.Forms.BackgroundKit/blob/4e7c51bcdaae90f738a0f220d520f97a8d49c69a/src/XamarinBackgroundKit.Android/PathProviders/RoundRectPathProvider.cs#L16

So here is a fix that works in my scenario. Instead of:

public override bool CanHandledByOutline =>
      Math.Abs(CornerRadii.Sum() / CornerRadii.Length - CornerRadii[0]) < 0.0001;

check the value of IsPathDirty first:

public override bool CanHandledByOutline =>
      !IsPathDirty && Math.Abs(CornerRadii.Sum() / CornerRadii.Length - CornerRadii[0]) < 0.0001;

What do you think ? Thanks !

[ChasakisD]

@tranb3r Version 2.1.2 released to nuget. Thank you very much!

[ChasakisD]

Merged the androidx branch