Looking to understand the iOS UIViewController lifecycle

Question

Could you explain me the correct manner to manage the UIViewController lifecycle?

In particular, I would like to know how to use Initialize

Answer 1

There's a lot of outdated and incomplete information here. For iOS 6 and newer only:

1. loadView^[a]
2. viewDidLoad^[a]
3. viewWillAppear
4. viewWillLayoutSubviews is the first time bounds are finalized
5. viewDidLayoutSubviews
6. viewDidAppear
7. * viewWillLayoutSubviews^[b]
8. * viewDidLayoutSubviews^[b]

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_Footnotes:

_{(a) - If you manually nil out your view during didReceiveMemoryWarning, loadView and viewDidLoad will be called again. That is, by default loadView and viewDidLoad only gets called once per view controller instance.}

_{(b) May be called an additional 0 or more times.}