How to detect when UIView size is changed in swift ios xcode?

Question

I am trying some stuffs out with CATiledLayer inside UIScrollView.

Somehow, the size of UIView inside the UIScrollView gets changed to a large number. I need to find out exactly what is causing this resize.

Is there a way to detect when the size of UIView(either frame, bounds) or the contentSize of UIScrollView is resized?

I tried

override var frame: CGRect {     didSet {         println("frame changed");     } } 

inside UIView subclass,

but it is only called once when the app starts, although the size of UIView is resized afterwards.

Answer 1

There's an answer here:

https://stackoverflow.com/a/27590915/5160929

Just paste this outside of a method body:

override var bounds: CGRect {     didSet {         // Do stuff here     } }