【发布时间】：2017-01-09 10:16:59
【问题描述】：
我正在尝试实现 MessageUI 和 MFMailComposeViewController 以便在我的应用程序中发送电子邮件。一切似乎都很好，只是一旦我开始了这个过程，我实际上就无法离开邮件客户端。如果我点击发送，它会发送，然后什么都不做（不返回应用程序）。如果我点击取消，它不会删除草稿和套件（或再次返回应用程序）。
import UIKit
import MessageUI
class ContactFormViewController: UITableViewController, MFMailComposeViewControllerDelegate {
...
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
switch indexPath.item{
case 0:
followOnEmail()
default:
break
}
}
private func mailComposeController(controller: MFMailComposeViewController, didFinishWithResult result: MFMailComposeResult, error: NSError?) {
controller.dismiss(animated: true, completion: nil)
}
func followOnEmail(){
if !MFMailComposeViewController.canSendMail(){
print("Mail services are not available")
return
}
let composeVC = MFMailComposeViewController()
composeVC.mailComposeDelegate = self
// Configure the fields of the interface.
composeVC.setToRecipients(["info@cegainnovations.com"])
composeVC.setSubject("")
composeVC.setMessageBody("Please enter your message below.", isHTML: false)
if MFMailComposeViewController.canSendMail(){
// Present the view controller modally.
self.present(composeVC, animated: true, completion: nil)
}
else{
self.showSendMailErrorAlert()
}
}
...
func showSendMailErrorAlert(){
let alertController = UIAlertController(title: "Could Not Send Email", message: "Your device could not send email. Please check e-mail configuration and try again.", preferredStyle: .alert)
let defaultAction = UIAlertAction(title: "Close", style: .default, handler: nil)
alertController.addAction(defaultAction)
present(alertController, animated: true, completion: nil)
}
}
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