SWIFT - mailComposeDelegate not called : cancel of MFMailComposeViewController doesn't work - swift

Question

On the same viewcontroller, we can send an email or a text message to send an information to a friend.
The text message in app fully works. But for the email, the email app opens inside my app with all the informations I asked to write but it's impossible to dismiss it by pushing cancel, nothing happens.
I tried mc.mailComposeDelegate = self or mc.delegate = self and MFMailComposeViewControllerDelegate is at the top too.
I looked everything on internet, I didn't find any explanation.
mailComposeController is never called!
Do you have any idea ?
class inviteAFriendViewController: UIViewController, MFMessageComposeViewControllerDelegate, MFMailComposeViewControllerDelegate {
#IBAction func emailButtonDidTouch(sender: AnyObject) {
sendEmail()
}
func sendEmail() {
let emailTitle = "text"
let messageBody = "text"
let toRecipents = [""]
let mc = MFMailComposeViewController()
//mc.mailComposeDelegate = self
mc.delegate = self
mc.setSubject(emailTitle)
mc.setMessageBody(messageBody, isHTML: false)
mc.setToRecipients(toRecipents)
presentViewController(mc, animated: true, completion: nil)
}
func mailComposeController(controller2: MFMailComposeViewController, didFinishWithResult result: MFMailComposeResult, error: NSError?) {
switch result.rawValue {
case MFMailComposeResultCancelled.rawValue:
print("Mail cancelled")
controller2.dismissViewControllerAnimated(true, completion: nil)
case MFMailComposeResultSaved.rawValue:
print("Mail saved")
controller2.dismissViewControllerAnimated(true, completion: nil)
case MFMailComposeResultSent.rawValue:
print("Mail sent")
controller2.dismissViewControllerAnimated(true, completion: nil)
case MFMailComposeResultFailed.rawValue:
print("Mail sent failure.")
controller2.dismissViewControllerAnimated(true, completion: nil)
default:
break
}
controller2.dismissViewControllerAnimated(true, completion: nil)
}

Answer 1

I got it working without any problems, but my delegate method looks a little bit different to yours:
func mailComposeController(controller:MFMailComposeViewController, didFinishWithResult result:MFMailComposeResult, error:NSError?) {
switch result.rawValue {
case MFMailComposeResultCancelled.rawValue:
print("Mail cancelled")
case MFMailComposeResultSaved.rawValue:
print("Mail saved")
case MFMailComposeResultSent.rawValue:
print("Mail sent")
case MFMailComposeResultFailed.rawValue:
print("Mail sent failure: %#", [error.localizedDescription])
default:
break
}
self.dismissViewControllerAnimated(true, completion: nil)
}
you may try this one.
And you need to set
mc.mailComposeDelegate = self
and not the
mc.delegate = self

Answer 2

First of all use
mc.mailComposeDelegate = self
instead of
mc.delegate = self
Moreover, in case of Swift 3, delegate method is somehow updated which is:
func mailComposeController(_ controller: MFMailComposeViewController, didFinishWith result: MFMailComposeResult, error: Error?){
controller.dismiss(animated: true, completion: nil)
}

Answer 3

For Swift 4:
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
}