我在xcode中遇到错误（没有可用的重载）

Question

import UIKit
class ViewController: UIViewController {
   @IBOutlet weak var leftimageview: UIImageView!
   @IBOutlet weak var rightimageview: UIImageView!

   @IBOutlet weak var leftscorelabel: UIStackView!
   @IBOutlet weak var rightscorelabel: UIStackView!

   override func viewDidLoad() {
      super.viewDidLoad()
      // Do any additional setup after loading the view, typically from a nib.
   }

   override func didReceiveMemoryWarnng() {
      super.didReceiveMemoryWarning()
      // Dispose of any resources that can be recreated.
   }

   @IBAction func resetbutton(_sender: Any) {
      print("resetgame")
      leftimageview.image = UIImage()
   }
}

I am getting this error when I am trying to change the picture displayed when the button in my project is pressed.

Answer 1

You can use a UIImage like this in one of 2 ways:

• Using the UIImage(named:) constructor

  leftimageview.image = UIImage(named: "rosemary")

• The more Swifty way, using an image literal

  leftimageview.image = #imageLiteral(resourceName: "rosemary")

You can use a Swift Image Literal in Xcode by starting to type Image Literal and use the autocomplete and select your image

Answer 2

如果您使用的是图片文字，则无需使用UIImage构造函数，只需执行leftimageview.image = rosemary ，其中rosemary是屏幕快照中的图片文字（与图片预览一起显示，实际上是#imageLiteral(resourceName: "rosemary") ）