ios - 使用相机模式拍摄图像时出错

Question

我正在使用相机和图库开发图像选择器，并使用以下代码获取从相机捕获的图像，但imageurl和图像名称为零。我正在使用操作系统版本 11.2.2 的移动设备上进行测试。

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

    let image = info[UIImagePickerControllerOriginalImage] as! UIImage
    let imageUrl          = info[UIImagePickerControllerReferenceURL] as? NSURL
    let imageName         = imageUrl?.lastPathComponent
    let documentDirectory = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first!
    let photoURL          = NSURL(fileURLWithPath: documentDirectory)
    let localPath         = photoURL.appendingPathComponent(imageName!)

    if !FileManager.default.fileExists(atPath: localPath!.path) {
        do {
            try UIImageJPEGRepresentation(image, 1.0)?.write(to: localPath!)
            print("file saved")
        }catch {
            print("error saving file")
        }
    }
    else {
        print("file already exists")
    }
}

Answer 1

使用UIImagePickerControllerImageURL而不是UIImagePickerControllerReferenceURL，如下所示:

let imageUrl = info[UIImagePickerControllerImageURL] as? NSURL