How to determine position of UIBarButtonItem in UIToolbar?

Question

What's the easiest way to determine the x,y location of a UIBarButtonItem in a UIToolbar?

The only answer I found is in any way to know where uibarbuttonitem has been drawn.

All proposed answers seem too complicated. There ought to be a simpler way to get the position of the damn UIBarButtonItem isn't there?

Answer 1

For iOS 11 (and maybe above) the call:

if let view = barButtonItemView.value(forKey: "view") as? UIView {
        let viewFrame = view.frame    
}

will return a zero point origin for the view. To counter this, ask for the window coordinates of the view, by using:

let actualPointOnWindow = view.convert(view.frame.origin, to: nil)

If your toolbar has any translations subtract them from the calculated point to find its position on the toolbar.

Complete Code:

if let view = barButtonItemView.value(forKey: "view") as? UIView {
     let viewFrame = view.frame    
     let actualPointOnWindow = view.convert(view.frame.origin, to: nil)
}