Ios imageview在拾取图像后不更新

我有以下问题。我使用imagepickerdelegate从照片库中选择一个图像，并将其应用到UIImageView中。问题是它不会用我选择的图像更新UIImageview

我都继承了

UIImagePickerControllerDelegate，UINavigationControllerDelegate

这是我的图像视图

let profileImageView: UIImageView = {

    let imageView = UIImageView()
    imageView.translatesAutoresizingMaskIntoConstraints = false
    imageView.layer.cornerRadius = 99  / 2
    imageView.layer.masksToBounds = true
    imageView.image = UIImage(named: "profileimg")
    imageView.contentMode = .scaleToFill
    return imageView

}()

然后，在UIImageView中处理选择和设置图像的函数如下所示

func addProfilePhoto() {

    let imagePicker = UIImagePickerController()
    imagePicker.delegate = self
    imagePicker.allowsEditing = true
    imagePicker.sourceType = .photoLibrary
    imagePicker.mediaTypes = UIImagePickerController.availableMediaTypes(for: .photoLibrary)!

    present(imagePicker, animated: true, completion: nil)
}

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

    var selectedImageFromPicker: UIImage?

    if let editedPickedImage = info[UIImagePickerControllerEditedImage] as? UIImage {
        selectedImageFromPicker = editedPickedImage
    } else if let pickedImage = info[UIImagePickerControllerOriginalImage] as? UIImage {
        selectedImageFromPicker = pickedImage
    }

    if let selectedImage = selectedImageFromPicker {
        print("set image")
        DispatchQueue.global(qos: .userInitiated).async {
            DispatchQueue.main.async {
                self.profileImageView.image = selectedImage
                self.dismiss(animated: true, completion: nil)
            }
        }
    }
}

func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
    dismiss(animated: true, completion: nil)
}

当我点击UIImageView时，我的日志会显示以下消息：

[通用]创建类型未知的图像格式时出错

当我选择一个图像时，它确认有一个图像，但它不会显示

设置图像

---

知道我做错了什么吗？

我检查了您的代码，似乎您没有在屏幕上显示profileImageView的代码。所以，你看不到它。例如：

profileImageView.frame = ........
self.view.addSubview(profileImageView)

---

哦，很抱歉我遗漏了那个部分，因为它也有很多约束的东西，但我确实包含了它。我甚至可以看到imageview，我可以点击它来显示我的uiimagepickercontroller。我可以遍历整个拾取和映像过程，它甚至在代码中返回映像，但它就是不显示。也许，问题就在这里：DispatchQueue.global（qos:.userInitiated）。async{}让我们尝试删除它。我已经尝试过了，它无法解决问题。我插入它是为了确保图像更改发生在主队列上