`import UIKit import AppTrackingTransparency func requestDFA(){ if #available(iOS 14, *){ ATTrackingManager.requestTrackingAuthorization { status in switch status { case .authorized: // 用户已授权跟踪 print("Tracking authorization status: authorized") case .denied: // 用户拒绝跟踪 print("Tracking authorization status: denied") case .notDetermined: // 用户尚未做出选择 print("Tracking authorization status: not determined") case .restricted: // 跟踪受限，例如在家长控制设置下 print("Tracking authorization status: restricted") default: print("Tracking authorization status: unknown") } } } } @main class AppDelegate: UIResponder, UIApplicationDelegate { func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool { // Override point for customization after application launch. requestDFA() return true } // MARK: UISceneSession Lifecyclez func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration { // Called when a new scene session is being created. // Use this method to select a configuration to create the new scene with. return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role) } func application(_ application: UIApplication, didDiscardSceneSessions sceneSessions: Set) { // Called when the user discards a scene session. // If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions. // Use this method to release any resources that were specific to the discarded scenes, as they will not return. } }`