Swift 4 图像选择器不改变 UIImageView

Question

由于某种原因，在我的新项目中，这段代码不起作用，之前对我有用。当前代码没有改变profileImage的ui。

代表

UIImagePickerControllerDelegate, UINavigationControllerDelegate, UIGestureRecognizerDelegate

代码：

@IBOutlet weak var profileImage: UIImageView!

@IBAction func changeProfilePicture(_ sender: Any) {
        print("Profile picture tapped")

        let pickerController = UIImagePickerController()
        pickerController.delegate = self
        pickerController.allowsEditing = true

        let alertController = UIAlertController(title: "Add Picture", message: "", preferredStyle: .actionSheet)

        let photoLibraryAction = UIAlertAction(title: "Photo Library", style: .default) { (action) in
            pickerController.sourceType = .photoLibrary
            self.present(pickerController, animated: true, completion: nil)
        }


        let cancelAction = UIAlertAction(title: "Cancel", style: .destructive, handler: nil)
        alertController.addAction(photoLibraryAction)
        alertController.addAction(cancelAction)
        present(alertController, animated: true, completion: nil)
    }

   @objc func imagePickerController(_ picker: UIImagePickerController, didFinishPickingImage image: UIImage, editingInfo: [String : Any]?) {

        self.profileImage.image = image
        self.dismiss(animated: true, completion: nil)

    }

控制台输出

发现扩展时遇到的错误：错误 Domain=PlugInKit Code=13 "查询已取消" UserInfo={NSLocalizedDescription=查询取消}

我试过了

   @objc func

    internal func

    @objc internal func

self.profileImage.image = image不设置UI和换图

Answer 1

正确的委托方法

func imagePickerController(_ picker: UIImagePickerController, 
  didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {

   if let image = info[.originalImage] as? UIImage {
      self.profileImage.image = image
   }
   else
     if let image = info[.editedImage] as? UIImage {
      self.profileImage.image = image
    }
     self.dismiss(animated: true, completion: nil)
}