[BUG] Touch events not passed through on iOS

[Alex-Witkowski]

Description

When having a SKCanvasView in front of a button the touch events don't reach the button on iOS even if EnableTouchEvents is set to false. Same when setting EnableTouchEvents to true and setting Handeled property of TouchEventArgs to false.

On Andorid everything works as expected.

Code

Case 0: <forms:SKCanvasView EnableTouchEvents="false" HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand" PaintSurface="Handle_PaintSurface" />

Case 1:

<forms:SKCanvasView EnableTouchEvents="true" HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand" Touch="SKCanvasView_OnTouch" PaintSurface="Handle_PaintSurface" />

private async void SKCanvasView_OnTouch(object sender, SKTouchEventArgs e) { e.Handled = false; }

Expected Behavior

When setting EnableTouchEvents to false touch gets passed through to underlying elements. Same when handling touch events and setting handled to false for TouchEventArgs. Just like it works on Android.

Actual Behavior

See description.

Basic Information

• Version with issue: 1.68.0
• Last known good version: none
• IDE: Visual Studio for Mac / Rider
• Platform Target Frameworks: iOS, Android
  • iOS: Tested: 12.2 & 11.3
• Target Devices: Tested: Simulator & iPhone 6s

Reproduction Link

See for demo application: https://github.com/Alex-Witkowski/SkiaSharpTouchTest

[EmmanuelJego]

Hello!

I am facing the same problem. Did you manage to work around it?

Thanks