From Paul Hagerty’s Stanford Lecture #5, here is the order in which things happen in a View Controller’s lifecycle:
- View controller is instantiated (from storyboard, etc.)
- awakeFromNib
- Outlets are set
- viewDidLoad
- (When geometry is determined)
- viewWillLayoutSubviews: and viewDidLayoutSubviews:
- (As MVC appears and reappears, this could happen multiple times)
- viewWillAppear: and viewDidAppear:
- (Whenever geometry changes while visible, eg device rotation)
- viewWillLayoutSubviews: and viewDidLayoutSubviews
- (if it is autorotation, then you also get will/didRotateTo/From messages, but rare to use these)
- viewWillDisappear: and viewDidDisappear:
- (If memory gets low)
