如何让我的应用打印“'E-Mail send'”或“电子邮件已取消”？

Question

我有一个可以发送电子邮件的应用程序。我已经知道了，因为邮件控制器在发送或取消按钮上键入后关闭。但我想在应用程序中添加一个“'Popup'”或其他内容，告诉用户他们是已发送邮件还是已取消邮件。

注释掉的代码是我尝试让应用程序说出来的，但由于一些警告而无法运行。

    @IBAction func Senden(_ sender: Any) {
        let toRecipients = ["Mail@adress.com"]
        let mc: MFMailComposeViewController =       MFMailComposeViewController()
        mc.mailComposeDelegate = self
        mc.setToRecipients(toRecipients)
        mc.setSubject(FirmaFeld.text!)
        
        mc.setMessageBody("Firma: \(FirmaFeld.text!) \n\n Kontaktperson:  \(KontaktpersonFeld.text!) \n\n EMail: \(EMailFeld.text!) \n\n Anliegen:  \(NachrichtFeld.text!)", isHTML: false)
        self.present(mc, animated: true, completion: nil)
    }
    
    func mailComposeController(_ controller:  MFMailComposeViewController, didFinishWith result: MFMailComposeResult,  error: Swift.Error?) {
        controller.dismiss(animated: true, completion: nil)
        
    
        
        }
        
        
    
        
     /*   switch result.rawValue {
        case MFMailComposeResult.cancelled.rawValue:
            print("Mail cancelled")
        case MFMailComposeResult.saved.rawValue:
            print("Mail saved")
        case MFMailComposeResult.sent.rawValue:
            print("Mail sent")
        case MFMailComposeResult.failed.rawValue:
            print("Mail sent failure: %@",   [error!.localizedDescription])
        default:
            break
        }
        // Dismiss the mail compose view controller.
        self.dismiss(animated: true, completion: nil)
        
    }*/
    
    
    @IBAction func dismissKeyboard(_ sender: Any) {
         self.resignFirstResponder()
    }

Answer 1

在 completionBlock 中显示 alertController。

controller.dismiss(animated: true, completion: {
if result == .cancelled {
        let alertController = UIAlertController(title: "E-Mail not sent!", message: "E-Mail not sent.", preferredStyle: .alert)

        alertController.addAction(UIAlertAction(title: "OK", style: .cancel, handler: { (action: UIAlertAction!) in
        }))

        present(alertController, animated: true, completion: nil)
    }
})

邮件发送方式相同

如何让我的应用打印“'E-Mail send'”或“电子邮件已取消”？

How do I get my app to print ''E-Mail send'' or ''E-Mail cancelled"?

xcode

swift

mfmailcomposeviewcontroller