使用UIApplicationShortcutItem時對成員“下標”的引用不明確

Question

我正在嘗試將代碼遷移到Swift 3，並遇到有關嘗試處理3D Touch快捷方式的錯誤。

我收到以下錯誤

使用3D Touch快捷鍵執行Segue-成員“下標”的含糊不清

對於以下行

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: Any]?) -> Bool {

if let shortcutItem = launchOptions?[UIApplicationLaunchOptionsShortcutItemKey] as? UIApplicationShortcutItem {
        handleShortcutItem(shortcutItem)
}


}

我不確定為什么要得到這個，其他人知道嗎？

這是我處理快捷方式的方式

enum ShortcutItemType: String {
case First
case Second
case Third

init?(shortcutItem: UIApplicationShortcutItem) {
    guard let last = shortcutItem.type.components(separatedBy: ".").last else { return nil }
    self.init(rawValue: last)
}

var type: String {
    return Bundle.main.bundleIdentifier! + ".\(self.rawValue)"
}
}


fileprivate func handleShortcutItem(_ shortcutItem: UIApplicationShortcutItem) {

    if let rootViewController = window?.rootViewController, let shortcutItemType = ShortcutItemType(shortcutItem: shortcutItem) {

     let rootNavController = rootViewController.childViewControllers.first as! UINavigationController

        let viewController = rootNavController.childViewControllers[1]

        switch shortcutItemType {
        case .First:
            viewController.performSegue(withIdentifier: "firstSegue", sender: self)
            break
        case .Second:
            viewController.performSegue(withIdentifier: "secondSegue", sender: self)
            break
        case .Third:

            //Segue to view controller from first then perform another segue to a modal view. 

            viewController.performSegue(withIdentifier: "thirdSegue", sender: self)
            break
        }
    }
}


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

Answer 1

application(_:didFinishLaunchingWithOptions:)的方法標頭已更改為：

func application(_ application: UIApplication,
                 didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey : Any]? = nil)

符號UIApplicationLaunchOptionsShortcutItemKey已替換為UIApplicationLaunchOptionsKey.shortcutItem 。

這可能是另一個問題，但是application(_:performActionFor:completionHandler:)需要具有以下標頭：

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

嘗試修復所有問題。