在iOS 13中更改ImagePicker导航标题

import UIKit

class ImagePickerDelegate: NSObject, UIImagePickerControllerDelegate {
    // 实现委托方法
}

extension ImagePickerDelegate: UINavigationControllerDelegate {
    func navigationController(_ navigationController: UINavigationController, willShow viewController: UIViewController, animated: Bool) {
        // 检查当前显示的视图控制器是否为UIImagePickerController
        guard let imagePickerController = viewController as? UIImagePickerController else { return }
        
        // 更改导航标题
        imagePickerController.navigationBar.topItem?.title = "选择照片"
    }
}

let imagePickerController = UIImagePickerController()
imagePickerController.delegate = ImagePickerDelegate()