ios - 在 ios 上， native 邮件上的取消和发送按钮不起作用。用户被阻止

Question

下面是打开 native 邮件应用程序的功能，单击取消按钮时没有任何反应， native 邮件应用程序上的发送按钮正在发送邮件，但用户也被阻止。用户没有得到任何操作响应。

   @IBAction func openNativeEmail(_ sender: AnyObject){
        if MFMailComposeViewController.canSendMail() {
            debugPrint("can send mail")
        let mailVC = MFMailComposeViewController()
        mailVC.mailComposeDelegate = self
        mailVC.setToRecipients(["pawanline@gmail.com"])
        mailVC.setSubject("Testing mail App features")
        mailVC.setCcRecipients(["pawan.kumar@iic.ac.in"])
        mailVC.setMessageBody("Hi,just testing ", isHTML: false)
            present(mailVC, animated: true, completion: nil)
        } else {
            print("Unable to send the mail")
        }

    func mailComposeController(_ controller: MFMailComposeViewController, didFinishWith result: MFMailComposeResult, error: Error?) {
            controller.dismiss(animated: true, completion: nil)
    }

Answer 1

您缺少右括号:

   @IBAction func openNativeEmail(_ sender: AnyObject){
        if MFMailComposeViewController.canSendMail() {
            debugPrint("can send mail")
        let mailVC = MFMailComposeViewController()
        mailVC.mailComposeDelegate = self
        mailVC.setToRecipients(["pawanline@gmail.com"])
        mailVC.setSubject("Testing mail App features")
        mailVC.setCcRecipients(["pawan.kumar@iic.ac.in"])
        mailVC.setMessageBody("Hi,just testing ", isHTML: false)
            present(mailVC, animated: true, completion: nil)
        } else {
            print("Unable to send the mail")
        }
    } // <----- THIS WAS MISSING 

    func mailComposeController(_ controller: MFMailComposeViewController, didFinishWith result: MFMailComposeResult, error: Error?) {
            controller.dismiss(animated: true, completion: nil)
    }