いまさら聞けない、UIViewControllerのライフサイクル。(Swift) 下記が主なイベント class ViewController : UIViewController { override func viewDidLoad () { super . viewDidLoad () print ( "viewDidLoad" ) } override func viewWillAppear ( _ animated: Bool ) { super . viewWillAppear (animated) print ( "viewWillAppear" ) } override func viewDidAppear ( _ animated: Bool ) { super . viewDidAppear (animated) print ( "viewDidAppear" ) } override func viewWillLayoutSubviews () { super . viewWillLayoutSubviews () print ( "viewWillLayoutSubviews" ) } override func viewDidLayoutSubviews () { super . viewDidLayoutSubviews () print ( "viewDidLayoutSubviews" ) } override func viewWillDisappear ( _ animated: Bool ) { super . viewWillDisappear (animated) print ( &quo