Question

我收到错误“ UIImage？”不能转换为'UIImage' let selectedImage = info[.originalImage] as? UIImage行在我的图像选择器功能中（如下）

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

    let selectedImage = info[.originalImage] as? UIImage

    // how do i set the image on my buttons when I select a photo?
    let imageButton = (picker as? CustomImagePickerController)?.imageButton
    imageButton?.setImage(selectedImage?.withRenderingMode(.alwaysOriginal), for: .normal)
    dismiss(animated: true)

    let filename = UUID().uuidString
    let ref = Storage.storage().reference(withPath: "/images/\(filename)")
    guard let uploadData = selectedImage?.jpegData(compressionQuality: 0.75) else { return }


    //guard let uploadData = selectedImage else { return }

    let hud = JGProgressHUD(style: .dark)
    hud.textLabel.text = "Uploading image..."
    hud.show(in: view)
    ref.putData(uploadData, metadata: nil) { (nil, err) in
        if let err = err {
            hud.dismiss()
            print("Failed to upload image to storage:", err)
            return
        }

        print("Finished uploading image")
        ref.downloadURL(completion: { (url, err) in

            hud.dismiss()

            if let err = err {
                print("Failed to retrieve download URL:", err)
                return
            }

            print("Finished getting download url:", url?.absoluteString ?? "")

            if imageButton == self.image1Button {
                self.user?.imageUrl1 = url?.absoluteString
            } else if imageButton == self.image2Button {
                self.user?.imageUrl2 = url?.absoluteString
            } else {
                self.user?.imageUrl3 = url?.absoluteString
            }
        })
    }
}

Answer 1

签名：

<!-- the "span.dot" are now added by "JavaScript" according to the number of "div.news" on the page -->

<!-- 
added two "data-*" attributes :
  data-slideshow-index: the index of "div.news" which the "span.dot" points to (remember! the "span.dots" are added by "JavaScript").
  data-slideshow-role: the role (can be either "next" or "prev") of the "a.cycle" element (the last two anchor tags).
-->
<section id="section-three">
  <div class="container slideshow-container2">
    <div class="news">
      <div class="news-content">
        <div class="buttons">
          <a class="btn company-btn" href="#">COMPANY NEWS</a>
          <a class="btn industry-btn" href="#">INDUSTRY NEWS</a>
        </div>
        <h1>OUR PEOPLE ARE OUT STONGEST ASSET </h1>
      </div>
    </div>
    <div class="news news2">
      <div class="news2-content">
        <div class="buttons">
          <a class="btn company-btn" href="#">COMPANY NEWS</a>
          <a class="btn industry-btn" href="#">INDUSTRY NEWS</a>
        </div>
        <h1 class="media-room">MEDIA ROOM </h1>
      </div>
    </div>
    <!-- the next "div#dots" will be populated by `JavaScript` that adds "span.dot" according to the number of "div.news" in the page -->
    <div id="dots"></div>
    <!-- added "cycle" class (to be used by "JavaScript" for now) and data-slideshow-role attribute -->
    <a href="javascript:void(0);" class="cycle" data-slideshow-role="prev">prev</a>
    <a href="javascript:void(0);" class="cycle" data-slideshow-role="next">next</a>
  </div>
</section>

已更改为：

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any])

这是导致错误的原因。

将签名更改为新的签名，即：

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

将解决该错误。

Answer 2

遇到相同的错误-展开selectedImage旁边，请确保您具有正确/更新的函数参数（它们将info从类型[String : Any]更改为{{ 1}}，这给了我错误。

它应该是这样的：

[UIImagePickerController.InfoKey : Any]

希望这会有所帮助！

Answer 3

这应该有效：

guard let image = info[UIImagePickerControllerOriginalImage] as? UIImage else { return }

Answer 4

info: [String : Any]中的信息已更改（感谢苹果每次都会更改）

在新功能中覆盖您的功能：

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

Answer 5

那是因为您需要首先解开selectedImage：

guard let selectedImage = info[.originalImage] as? UIImage else { return }

迅速的“ UIImage？”不能转换为'UIImage'

5 个答案: