从UIImagePickerController获取图像

import UIKit
import Photos

<key>NSPhotoLibraryUsageDescription</key><string>App需要您的同意才能访问您的照片库</string>

func selectImage() {
    let imagePickerController = UIImagePickerController()
    imagePickerController.delegate = self
    imagePickerController.sourceType = .photoLibrary
    imagePickerController.allowsEditing = false
    present(imagePickerController, animated: true, completion: nil)
}

class YourViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
    // Your view controller code
}

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey: Any]) {
    picker.dismiss(animated: true, completion: nil)
    
    if let selectedImage = info[.originalImage] as? UIImage {
        // Use the selectedImage as you wish
    }
}

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

selectImage()