Interview guides / ios
View controller lifecycle: iOS Interview Question
View controller lifecycle interview question with a clear example answer for iOS engineers. Practice with AceMobileInterview.
This is a common iOS interview topic: View controller lifecycle.
Below is a concise answer you can adapt in a real interview, then go deeper in the full AceMobileInterview track.
1.Walk through the UIViewController lifecycle and where you would load data, configure UI, and clean up observers.
loadView → viewDidLoad (one-time setup) → viewWillAppear → viewIsAppearing → viewDidAppear → viewWillDisappear → viewDidDisappear → deinit. Load remote data after first appear or via a dedicated loader; remove NotificationCenter/KVO observers in deinit or viewDidDisappear depending on scope; cancel in-flight tasks when the screen disappears if results are no longer needed.
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