ios - 调用快速操作时不触发 NotificationCenter

Question

我在 AppDelegate 中调用函数 performActionForShortcutItem 时在应用程序中实现了 3D Touch Quick Action，我通过其中的 NotificationCenter 触发但无法正常调用

我在 AppDelegate 中的代码:

func application(_ application: UIApplication, performActionFor 
shortcutItem: UIApplicationShortcutItem, completionHandler: @escaping 
(Bool) -> Void) {


    NotificationCenter.default.post(name: Notification.Name("action"), object: nil);

}        

并使用它ViewController:

override func viewDidLoad() {
    super.viewDidLoad();


    NotificationCenter.default.addObserver(self, selector: #selector(BaseViewController.didReceiveNotification), name: Notification.Name("action"), object: nil);
}

func didReceiveNotification() {
    let alert = UIAlert(viewController: self);
    alert.content = "NotificationCenter Worked";
    alert.title = "NotificationCenter here!!";
    alert.show();
}

Answer 1

问题是 ViewController 还没有加载，所以观察者还没有添加到它

 NotificationCenter.default.addObserver(self, selector: #selector(BaseViewController.didReceiveNotification), name: Notification.Name("action"), object: nil);

您可以尝试在 performActionForshortcutItem 中设置一个 bool 值，并在 ViewController 的 viewDidAppear 中检查它