MFMessageComposeViewController cancel button not working

Question

I use this block to send message to the contacts, after sending, the back button is there, but when I touch it nothing happens. Please help me out :)

-(IBAct         


        

Answer 1

Here's the answer for Swift 4, iOS 11

func mailComposeController(_ controller: MFMailComposeViewController, didFinishWith result: MFMailComposeResult, error: Error?) {
        print("Emailing attempt, error="+(error?.localizedDescription)!)        
        switch (result){
        case MFMailComposeResult.cancelled:
            print("Mail cancelled");
            break;
        case MFMailComposeResult.saved:
            print("Mail saved");
            break;
        case MFMailComposeResult.sent:
            print("Mail sent");
            break;
        case MFMailComposeResult.failed:
            print("Mail sent failure: %@", error?.localizedDescription);
            break;
        default:
            break;
        }
        // Close the Mail Interface
        controller.dismiss(animated: true)
    }