ViewController

Question 0

There are two ways that a view controller can create its view hierarchy:

Answer 0

1. programmatically, by overriding the UIViewController method loadView.
2. in Interface Builder, by loading a NIB file.

Question 1

A view controller’s view is not created until it needs to appear on the screen. This optimization is called…

Answer 1

lazy loading

Question 2

If a view controller is asked for its view and its view is nil, then…

Answer 2

the view controller is sent the loadView message.

Question 3

There is a convenient method for adding a view controller’s view hierarchy to the window

Answer 3

UIWindow ’s setRootViewController:

Question 4

Setting a view controller as the rootViewController adds that view controller’s view as a…

Answer 4

subview of the window.

It also automatically resizes the view to be the same size as the window.