如何在iphone中获取通过照片库选取的图像名称？

import UIKit
import AssetsLibrary

class ViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {

    override func viewDidLoad() {
        super.viewDidLoad()
    }

    @IBAction func openPhotoLibrary(_ sender: UIButton) {
        let imagePicker = UIImagePickerController()
        imagePicker.sourceType = .photoLibrary
        imagePicker.delegate = self
        present(imagePicker, animated: true, completion: nil)
    }

    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
        dismiss(animated: true, completion: nil)
        
        if let imageURL = info[.imageURL] as? URL {
            let assetsLibrary = ALAssetsLibrary()
            assetsLibrary.asset(for: imageURL, resultBlock: { (asset) in
                if let asset = asset {
                    let imageName = asset.value(forProperty: ALAssetPropertyAssetName) as? String
                    print("选取的图像名称：\(imageName ?? "")")
                }
            }, failureBlock: nil)
        }
    }

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