SwiftUi 앱 라이프사이클

scenePhase.md

import SwiftUI

@main
struct ScenePhaseApp: App {
    
    @Environment(\.scenePhase) var scenePhase
    
    var body: some Scene {
        WindowGroup {
            ContentView()
        }
        .onChange(of: self.scenePhase, perform: { changedScenePhase in
            switch changedScenePhase {
            case .active:
                print("[scenePhase] active 앱이 켜진 직후 / 재진입")
            case .inactive:
                print("[scenePhase] inactive 앱 스위칭 할 수 있게 올린 상태")
            case .background:
                print("[scenePhase] background 아이폰 홈화면으로 나왔을 때")
            @unknown default:
                print("background")
            }
        })
//        applicationDidBecomeActive
//        applicationWillResignActive
//        applicationDidEnterBackground
    }
}