iOS 13 Adding a UIWindow with shadow

Question

I would like to add a UIWindow with shadow and corners in iOS 13. My UIWindow looks like this:

- UIWindow
  - backgroundView
  - containerView
    - topContainerView(containers for avatar and nickname)
    - replyView
    - ......

Currently, I add corners with UIBezierPath in my containerView, and add shadow in my backgroundView. It works perfectly under iOS 12. But in iOS 13, it does not work.

Expected :

Currently:

Any suggestions and ideas would be appreciated.

Answer 1

Turns out the UIDropShadowView under iOS 13 defaults its clipsToBounds to true.

To fix this, manually set its clipsToBounds property to false.

window.subviews.first?.subviews.first?.clipsToBounds = false