把uImage？不能转换为UIImage：Xcode在尝试使用原始图像时会抛出错误

Question

 func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    // The info dictionary may contain multiple representations of the image. You want to use the original.
    guard let selectedImage = info[.originalImage] as?
        UIImage else {
        fatalError("Expected a dictionary containing an image, but was provided the following: \(info)")
    }

    // Set photoImageView to display the selected image.
    photoImageView.image = selectedImage

    // Dismiss the picker.
    dismiss(animated: true, completion: nil)
}

我正在尝试构建一个iOS应用程序，允许您从库中选择一个图像，但它一直失败，错误“UIImage？无法转换为UIImage。有没有办法解决此错误或绕过它现在？我在MacOS 10.14上运行Xcode 10.1。

Answer 1

用.originalImage替换UIImagePickerControllerOriginalImage

这对我有用。

Xcode版本：10.1

Swift版本：4.0

Answer 2

info [.originalImage]是一个Any？值。 Si它就像它可以包含一个UIImage？价值或零。所以，试试：

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

将该问号添加到UIImage。就这样。