Swift 3'？' 不能转换为''

我有一个从Swift 2转换到Swift 3的TVOS应用程序，我得到以下错误。 我不确定如何保持沉默。

'[UIApplicationLaunchOptionsKey：Any]？' 不能转换为'[String：NSString]'

它显示在这段代码中

appControllerContext.launchOptions["BASEURL"] = AppDelegate.TVBaseURL if let launchOptions = launchOptions as? [String: AnyObject] { for (kind, value) in launchOptions { appControllerContext.launchOptions[kind] = value } } 

添加：

 /* Copyright (C) 2015 Hani Hamrouni. All Rights Reserved. */ import UIKit import TVMLKit @UIApplicationMain class AppDelegate: UIResponder, UIApplicationDelegate, TVApplicationControllerDelegate { // MARK: Properties var window: UIWindow? var appController: TVApplicationController? //change the link to your host url static let TVBaseURL = "http://google.com" static let TVBootURL = "\(AppDelegate.TVBaseURL)js/application.js" // MARK: UIApplication Overrides func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool { // Override point for customization after application launch. window = UIWindow(frame: UIScreen.main.bounds) /* Create the TVApplicationControllerContext for this application and set the properties that will be passed to the `App.onLaunch` function in JavaScript. */ let appControllerContext = TVApplicationControllerContext() /* The JavaScript URL is used to create the JavaScript context for your TVMLKit application. Although it is possible to separate your JavaScript into separate files, to help reduce the launch time of your application we recommend creating minified and compressed version of this resource. This will allow for the resource to be retrieved and UI presented to the user quickly. */ if let javaScriptURL = URL(string: AppDelegate.TVBootURL) { appControllerContext.javaScriptApplicationURL = javaScriptURL } appControllerContext.launchOptions["BASEURL"] = AppDelegate.TVBaseURL if let launchOptions = launchOptions { for (kind, value) in launchOptions { appControllerContext.launchOptions[kind.rawValue] = value as AnyObject } } appController = TVApplicationController(context: appControllerContext, window: window, delegate: self) return true } // MARK: TVApplicationControllerDelegate func appController(_ appController: TVApplicationController, didFinishLaunching options: [String: Any]?) { print("\(#function) invoked with options: \(options)") } func appController(_ appController: TVApplicationController, didFail error: Error) { print("\(#function) invoked with error: \(error)") let title = "Error Launching Application" //error message let message = error.localizedDescription let alertController = UIAlertController(title: title, message: message, preferredStyle:.alert ) self.appController?.navigationController.present(alertController, animated: true, completion: { () -> Void in // ... }) } func appController(_ appController: TVApplicationController, didStop options: [String: Any]?) { print("\(#function) invoked with options: \(options)") } } 

Answer 1

你最好使用[UIApplicationLaunchOptionsKey : Any] 。

这怎么样？

  if let launchOptions = launchOptions { for (kind, value) in launchOptions { appControllerContext.launchOptions[kind.rawValue] = value } } 

---

更新

看来launchOptions的属性launchOptions的TVApplicationControllerContext是[String: Any] ，所以你不需要as AnyObject 。

Answer 2

请尝试此代码，并告诉我发生了什么。

 appControllerContext.launchOptions["BASEURL"] = AppDelegate.TVBaseURL if let launchOptions = launchOptions as? [String: Any] { for (kind, value) in launchOptions { appControllerContext.launchOptions[kind] = value } }