ios - Swift：实现快捷方式项目（3D 触摸）共享项目错误“AppDelegate 类型的值没有当前成员”

Question

我正在尝试实现共享快捷方式项目（我的实现）：

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)
}

但在这一行：

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

我收到此错误：

Value of type AppDelegate has no member of present

你们中的任何人都知道为什么我会收到此错误吗？或解决这个问题？

我会非常感谢你的帮助。

Answer 1

尝试这个，

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)
    }
}