如何从iphone sdk中的地址簿访问联系人图像？

import UIKit
import AddressBook
import AddressBookUI

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        
        let addressBook = ABAddressBookCreateWithOptions(nil, nil).takeRetainedValue()
        
        ABAddressBookRequestAccessWithCompletion(addressBook) { (granted, error) in
            if granted {
                let allContacts = ABAddressBookCopyArrayOfAllPeople(addressBook).takeRetainedValue() as NSArray
                
                for record: ABRecordRef in allContacts {
                    let contactPerson: ABRecord = record
                    let imageData = ABPersonCopyImageDataWithFormat(contactPerson, kABPersonImageFormatThumbnail)?.takeRetainedValue()
                    
                    if let image = UIImage(data: imageData!) {
                        // 在应用程序中显示联系人图像
                        DispatchQueue.main.async {
                            // 在此处更新UI
                        }
                    }
                }
            } else {
                // 用户拒绝了访问权限
            }
        }
    }
}