Finding the size of a view adjusted by a UIStackView swift

Question

A number of views in a UIStackView are adjusted to fit the stack. The views are initialised with no frame because they are resized by the stack view. Is there a way which I can get the size of the views after they have been resized by the stack view?

Answer 1

The sizes are available after UIStackView.layoutSubviews() finishes. You can subclass UIStackView and override layoutSubviews:

class MyStackView: UIStackView {
    override func layoutSubviews() {
        super.layoutSubviews()
        print("arrangedSubviews now have correct frames")
        // Post a notification...
        // Call a method on an outlet...
        // etc.
    }
}