如何呈现类似于MFMailComposeViewController的UIViewController

import UIKit
import MessageUI

class EmailViewController: UIViewController, MFMailComposeViewControllerDelegate {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let sendEmailButton = UIButton(type: .system)
        sendEmailButton.setTitle("发送邮件", for: .normal)
        sendEmailButton.addTarget(self, action: #selector(sendEmail), for: .touchUpInside)
        view.addSubview(sendEmailButton)
        
        // 添加sendEmailButton的约束等布局代码...
    }
    
    @objc func sendEmail() {
        if MFMailComposeViewController.canSendMail() {
            let mailComposeViewController = MFMailComposeViewController()
            mailComposeViewController.mailComposeDelegate = self
            mailComposeViewController.setSubject("邮件主题")
            mailComposeViewController.setToRecipients(["recipient@example.com"])
            mailComposeViewController.setMessageBody("邮件正文", isHTML: false)
            
            present(mailComposeViewController, animated: true, completion: nil)
        } else {
            // 设备不支持发送邮件
            // 可以在这里给出适当的提示或备选方案
        }
    }
    
    func mailComposeController(_ controller: MFMailComposeViewController, didFinishWith result: MFMailComposeResult, error: Error?) {
        controller.dismiss(animated: true, completion: nil)
        
        // 根据邮件发送结果进行相应处理
        switch result {
        case .cancelled:
            // 邮件发送被取消
            break
        case .saved:
            // 邮件已保存草稿
            break
        case .sent:
            // 邮件已成功发送
            break
        case .failed:
            // 邮件发送失败
            break
        default:
            break
        }
    }
}