使用快速动作进行操作

Question

抱歉，如果这是一个愚蠢的问题，请设置3D Touch快速操作。我将所有内容都放入.plist文件中，并且不得不将其放入我的AppDelegate.swift文件中

AppDelegate.swift

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.

    // Grab a reference to the shortcutItem to use in the scene
    if let shortcutItem = options.shortcutItem {
        shortcutItemToProcess = shortcutItem
    }

    // Previously this method only contained the line below, where the scene is configured
    return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role) }

并将其放入我的SceneDelegate.swift

// Shortcut code
    func windowScene(_ windowScene: UIWindowScene, performActionFor shortcutItem: UIApplicationShortcutItem, completionHandler: @escaping (Bool) -> Void) {
        // When the user opens the app through a quick action, this is now the method that will be called
        (UIApplication.shared.delegate as! AppDelegate).shortcutItemToProcess = shortcutItem

    }
    // Shortcut code
    func sceneDidBecomeActive(_ scene: UIScene) {
        // Is there a shortcut item that has not yet been processed?
        if let shortcutItem = (UIApplication.shared.delegate as! AppDelegate).shortcutItemToProcess {


            if shortcutItem.type == "com.application.Start" {
                print("Start Shortcut pressed")

                //let vc = ViewController ()
                //vc.startAct()

            }
            // Reset the shorcut item so it's never processed twice.
            (UIApplication.shared.delegate as! AppDelegate).shortcutItemToProcess = nil
        }
    }

我想运行主应用程序文件ViewController.swift中的函数startAct() { ... }

我尝试过

let vc = ViewController ()
vc.startAct()

它开始运行，但在第一行立即崩溃，并释放了有关解开nil值或类似内容的错误。我猜测它实际上不是在加载Main视图，而是试图从SceneDelegate.swift运行它，这是不正确的。

谢谢你。

Answer 1

这似乎引起了一些混乱，所以我将展示我的工作。

您必须在两个位置实现对快捷方式项的响应：在场景委托的willConnectTo和performActionFor中。为了帮助您进行测试，我将删除所有错误检查和分析，并仅说明我们实际上在响应快捷方式项：

func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
    if let shortcutItem = connectionOptions.shortcutItem {
        let alert = UIAlertController(title: "Hello", message: "", preferredStyle: .alert)
        alert.addAction(UIAlertAction(title: "OK", style: .default))
        self.window?.makeKeyAndVisible()
        self.window?.rootViewController?.present(alert, animated: true)
    }
}

func windowScene(_ windowScene: UIWindowScene, performActionFor shortcutItem: UIApplicationShortcutItem, completionHandler: @escaping (Bool) -> Void) {
    let alert = UIAlertController(title: "Hello", message: "", preferredStyle: .alert)
    alert.addAction(UIAlertAction(title: "OK", style: .default))
    self.window?.rootViewController?.present(alert, animated: true)
    completionHandler(true)
}

这将显示警报，表明该应用是事先已暂停还是已终止。