在Swift 5中点击通知时切换ViewControllers

import UserNotifications

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate {

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        // 注册通知
        UNUserNotificationCenter.current().delegate = self
        UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) { (granted, error) in
            // 处理授权结果
        }
        application.registerForRemoteNotifications()
        return true
    }

    // 接收到通知时调用
    func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
        // 处理通知点击事件
        if response.actionIdentifier == UNNotificationDefaultActionIdentifier {
            // 在这里切换ViewControllers
            let storyboard = UIStoryboard(name: "Main", bundle: nil)
            let viewController = storyboard.instantiateViewController(withIdentifier: "YourViewControllerIdentifier")
            UIApplication.shared.keyWindow?.rootViewController = viewController
        }
        completionHandler()
    }
}