What is the purpose of the viewDidLayoutSubviews method in the iOS view controller lifecycle?

The viewDidLayoutSubviews method is called in the UIViewController lifecycle after the system has laid out and resized all subviews of the controller. Its main purpose is to update the layout and sizes of interface elements if necessary, after changes in screen size or orientation. For example, if you need to dynamically change the frame of a subview, it is best to do so in this method to ensure correct display.