在iOS Swift中實施完成時出錯

Question

  let mailComposeViewController = self.configuredMailComposeViewController(randomNumber, email: email!)
   if MFMailComposeViewController.canSendMail()
   {
         self.presentViewController(mailComposeViewController, animated: true, completion { () -> Void in

              self.securityCode(randomNumber, email: email!)
         })
     }
     else
     {
          self.showSendMailErrorAlert()
     }

Answer 1

您未正確使用完成功能。 這樣使用

self.presentViewController(mailComposeViewController, animated:true) { () -> Void in
             self.securityCode(randomNumber, email: email!)
        }