States.md

The App Life Cycle

Scene based life-cycle events

App based life-cycle

1. App Launched
2. App Visible
3. App Recedes into Background
4. Resources Reclaimed

Basic steps an app goes through

1. application(_:didFinishLaunchingWithOptions:)
2. scene(_:willConnectTo:oprions:)
3. viewDidLoad
4. viewWillAppear
5. sceneWillEnterForeground(_:)
6. sceneDidBecomeActive(_:)
7. viewDidAppear

When user switches to another app

1. sceneWillResignActive(_:)
2. sceneDidEnterBackground(_:)

When user switches back to the app

1. sceneDidBecomeActive(_:)
2. sceneWillResignActive(_:)

When user closes the app

1. sceneDidDisconnect(_:)
2. application(_:didDiscardSceneSessions:)

Official Documentation

• Managing Your App's Life Cycle