使用UserNotifications didReceive响应演示ViewController

Question

我有一个实现了UserNotifications的LocalNotification类。我已经在我需要展示的初始ViewController和CheckViewController之间创建了段。这是我的didReceive responce函数

func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) { let storyboard = UIStoryboard(name: "Main", bundle: nil) let nav = storyboard.instantiateInitialViewController() as! UINavigationController let mainViewController = nav.topViewController as! ViewController mainViewController.performSegue(withIdentifier: "CheckSegue", sender: nil) }

但我得到的仍然是初始的ViewController。我哪里错了？

Answer 1

MainViewController是最初的视图控制器吗？如果是，那么您看到的实例就是应用程序的根目录。您正在创建一个不可见的全新实例。

试一试

let nav = UIApplication.shared.keyWindow?.rootViewController as? UINavigationController

而不是

let nav = storyboard.instantiateInitialViewController() as! UINavigationController