[Bug] Layout does not react to tap with CollectionView child on Android

[vikern22]

Description

The layout containing a CollectionView does not react to taps in the area where the CollectionView is present on the Android platform. Seems to work fine on the iOS platform.

Steps to Reproduce

1. Run the attached sample on Android
2. Tap anywhere on the CollectionView

Expected Behavior

The tapped event is fired and the Label below should display "Tapped!"

Actual Behavior

The tapped event is not fired.

Basic Information

• Version with issue: 4.5.0.396
• Last known good version:
• IDE: VS 2019 Enterprise
• Platform Target Frameworks:
  • iOS: 13.3
  • Android: 10
• Nuget Packages: NETStandard.Library, Xamarin.Essentials, Xamarin.Forms
• Affected Devices: Pixel 2 emulator, Galaxy Note 4

Reproduction Link

https://drive.google.com/open?id=1Ci6NjRY9KvE3RbYSDZQ4f0pV1IsGY_LN

[jfversluis]

Adding the reproduction to the GitHub issue so it won't go lost on us.

If I understand your problem correctly, you have a StackLayout with a TapGestureRecognizer and that recognizer does not fire when you add a CollectionView inside that StackLayout, right?

That is what I see happening. This works for iOS, but not Android. When I change the StackLayout to a Grid it does seem to work.

CollectionViewTest.zip

[vikern22]

Correct. Does not seem to work if I programatically add a TapGestureRecognizer to the CollectionView either.

[vikern22]

Does not work replacing the StackLayout with a Grid for me.