MFMailComposeViewControllerDelegate not being called

Question

I realize this question has been inexactly asked around, but I haven\'t been able to find an answer to my problem.

I have a UITableViewController with static cells.

Answer 1

mailCVP.delegate = self
mailCVP = configureMailComposeVC()

This code sets the delegate but then creates a new instance, which doesn't have a delegate...

Note that there is also no point in creating the VC instance if MFMailComposeViewController.canSendMail returns false.

Answer 2

Make sure you use

controller.mailComposeDelegate = self

Not this one

controller.delegate = self

Answer 3

First of all use

mailCVP.mailComposeDelegate = self

instead of

mailCVP.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 4

MFMailComposeViewController is a subclass of UINavigationController, which already has a delegate property to handle navigation changes.

MFMailComposeViewController has another property called mailComposeDelegate, which is the property you are looking for.

Also, you should create the controller before setting the delegate.