斯威夫特：實現shortcutItem（3D觸摸）股項的錯誤「類型的AppDelegate的價值已經沒有現在的成員」

Question

我試圖實施股權shortcutItem（我的實現）：

func application(_ application: UIApplication, performActionFor shortcutItem: UIApplicationShortcutItem, completionHandler: @escaping (Bool) -> Void) { 
    if shortcutItem.type == "share"{ 
     self.shareItem() 
    } 
} 
func shareItem() { 

    let visitedlink = "http://google.com" 
    let myWebsite = NSURL(string: visitedlink) 
    let img: UIImage = UIImage(named:"Logo")! 
    guard let url = myWebsite else { 
     print("nothing found") 
     return 
    } 
    let shareItems:Array = [img,url] 
    let activityViewController:UIActivityViewController = UIActivityViewController(activityItems: shareItems, applicationActivities: nil) 
    activityViewController.excludedActivityTypes = [UIActivityType.print, UIActivityType.postToWeibo, UIActivityType.copyToPasteboard, UIActivityType.addToReadingList, UIActivityType.postToVimeo, UIActivityType.message, UIActivityType.mail] 

    self.present(activityViewController, animated: true, completion: nil) 
} 

但在這行：

self.present(activityViewController, animated: true, completion: nil) 

我得到這個錯誤：

Value of type AppDelegate has no member of present 

你們誰都知道我爲什麼會遇到這個錯誤？或者解決這個問題？

我真的很感謝你的幫助。

Answer 1

試試這個，

public extension UIViewController { 
    func shareItem() { 
     let visitedlink = "http://google.com" 
     let myWebsite = NSURL(string: visitedlink) 
     let img: UIImage = UIImage(named:"Logo")! 
     guard let url = myWebsite else { 
      print("nothing found") 
      return 
     } 
     let shareItems:Array = [img,url] 
     let activityViewController:UIActivityViewController = UIActivityViewController(activityItems: shareItems, applicationActivities: nil) 
     activityViewController.excludedActivityTypes = [UIActivityType.print, UIActivityType.postToWeibo, UIActivityType.copyToPasteboard, UIActivityType.addToReadingList, UIActivityType.postToVimeo, UIActivityType.message, UIActivityType.mail] 

     self.present(activityViewController, animated: true, completion: nil) 
    } 
}