Tracking of views on UIWIndow In iOS app

Question

WHen we use navigation controller as a root of window and we pushed multiple controllers on that navigation controller. lets say A as navigation controller B as root of navigation controller C is pushed on BD is pushes on C

then what will be hierarchi of views on window. is it like first Window -> A -> B -> C -> D;

or they are in memory but on window there is only one D?

Answer 1

You can do investigation by your own, just print during debug :

po [[UIWindow keyWindow] recursiveDescription]

It will show you full View hierarchy for your app.

But yes, the final structure looks like:

UIWindow -> UINavigationController.view -> RootViewController.view -> OtherViewControllerView -> Subview's