ios - SwiftUI 应用生命周期 iOS14 AppDelegate 代码放哪里？

Question

现在 AppDelegate和 SceneDelegate已从 SwiftUI 中删除，我将以前在 SceneDelegate 中的代码放在哪里？和 AppDelegate , 前的 Firebase 配置？
因此，我的 AppDelegate 中目前有此代码:
我现在应该把这段代码放在哪里？

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.
    
    FirebaseConfiguration.shared.setLoggerLevel(.min)
    FirebaseApp.configure()
    return true
}

Answer 1

这是 SwiftUI 生命周期的解决方案。使用 Xcode 12b/iOS 14 测试

import SwiftUI
import UIKit

// no changes in your AppDelegate class
class AppDelegate: NSObject, UIApplicationDelegate {
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
        print(">> your code here !!")
        return true
    }
}

@main
struct Testing_SwiftUI2App: App {

    // inject into SwiftUI life-cycle via adaptor !!!
    @UIApplicationDelegateAdaptor(AppDelegate.self) var appDelegate

    var body: some Scene {
        WindowGroup {
            ContentView()
        }
    }
}

backup