ios - 3D Touch Quick Action 无法快速工作 3

Question

我正在尝试在我的应用中添加 3D 触摸快速操作。我在 navigationContoller 中嵌入了两个 viewContoller。当用户按下 3D Action 时，它应该将它们带到添加事件 viewController。但是我收到了这个错误

could not cast value of type 'Morning_Star_2.AddEventsViewController' (0x1000a2260) to 'UINavigationController' (0x1a79cd360). 2017-05-02 02:51:36.220324-0400 Morning Star 2[3731:895126] Could not cast value of type 'Morning_Star_2.AddEventsViewController' (0x1000a2260) to 'UINavigationController' (0x1a79cd360).

这是我的代码

func application(_ application: UIApplication, performActionFor shortcutItem: UIApplicationShortcutItem, completionHandler: @escaping (Bool) -> Void) {
    if shortcutItem.type == "com.krp.addEvent" {
        let sb = UIStoryboard(name: "Main", bundle: nil)
        let addEventVC = sb.instantiateViewController(withIdentifier: "addEventVC") as! UINavigationController
        self.window?.rootViewController?.present(addEventVC, animated: true, completion: nil)
    }
}

我试过改成! UINavigationController 来作为!添加事件 View Controller 。它可以工作，但它不会在我添加的 viewController 顶部显示导航栏，如果您正常打开应用程序，它通常会显示导航栏。

Here is my main.storyboard

Answer 1

你不应该施放 AddEventsViewController至 UINavigationController ，因为它不是 UINavigationController , 只是 UIViewController 的子类.但正如我所见，你的 rootViewController是。所以你需要将它转换为 UINavigationController , 然后推送你的 AddEventsViewController ，而不是现在，你会看到 NavigationBar

func application(_ application: UIApplication, performActionFor shortcutItem: UIApplicationShortcutItem, completionHandler: @escaping (Bool) -> Void) {
        if shortcutItem.type == "com.krp.addEvent" {
        let sb = UIStoryboard(name: "Main", bundle: nil)
        let addEventVC = sb.instantiateViewController(withIdentifier: "addEventVC") as! AddEventsViewController
        if let navigationController = window?.rootViewController as? UINavigationController {
            navigationController.pushViewController(addEventVC, animated: true)
        }
    }
}