Failed on using Swift to implement in-app email

Question

I want to use swift to implement in-app email. When I click the button, the email window pops up. However, I am unable to send my email. Moreover, after I click cancel-delete draft, I cannot go back to the original screen.

import UIkit
import MessageUI


class Information : UIViewController, MFMailComposeViewControllerDelegate{

    var myMail: MFMailComposeViewController!

    @IBAction func sendReport(sender : AnyObject) {

        if(MFMailComposeViewController.canSendMail()){
            myMail = MFMailComposeViewController()

            //myMail.mailComposeDelegate

            // set the subject
            myMail.setSubject("My report")

            //To recipients
            var toRecipients = ["[email protected]"]
            myMail.setToRecipients(toRecipients)

            //CC recipients
            var ccRecipients = ["[email protected]"]
            myMail.setCcRecipients(ccRecipients)

            //CC recipients
            var bccRecipients = ["[email protected]"]
            myMail.setBccRecipients(ccRecipients)

            //Add some text to the message body
            var sentfrom = "Email sent from my app"
            myMail.setMessageBody(sentfrom, isHTML: true)

            //Include an attachment
            var image = UIImage(named: "Gimme.png")
            var imageData = UIImageJPEGRepresentation(image, 1.0)

            myMail.addAttachmentData(imageData, mimeType: "image/jped", fileName:     "image")

            //Display the view controller
            self.presentViewController(myMail, animated: true, completion: nil)
        }
        else{
            var alert = UIAlertController(title: "Alert", message: "Your device cannot send emails", preferredStyle: UIAlertControllerStyle.Alert)
            alert.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.Default, handler: nil))
            self.presentViewController(alert, animated: true, completion: nil)


        }
    }




func mailComposeController(controller: MFMailComposeViewController!,
    didFinishWithResult result: MFMailComposeResult,
    error: NSError!){

        switch(result.value){
        case MFMailComposeResultSent.value:
            println("Email sent")

        default:
            println("Whoops")
        }

        self.dismissViewControllerAnimated(true, completion: nil)

}
}

Answer 1

Since you haven't set the current view controller as the mailComposeDelegate of myMail, the mailComposeController:didFinishWithResult method isn't being called. After you init myMail, make sure to add:

myMail.mailComposeDelegate = self

and you'll be good to go

Answer 2

In case anyone is looking for a non MFMailCompose option, here's what I did to send using Gmail's SMTP servers.

1. Download a zip of this repo: https://github.com/jetseven/skpsmtpmessage
2. Drag and drop the files under SMTPLibrary into your XCode project
3. Create a new header file - MyApp-Briding-Header.h
4. Replace new header file with this:

#import "Base64Transcoder.h"
#import "HSK_CFUtilities.h"
#import "NSData+Base64Additions.h"
#import "NSStream+SKPSMTPExtensions.h"
#import "SKPSMTPMessage.h"

5. Go to Project(Targets > MyApp on the left)/Build Settings/Swift Compiler - Code Generation
6. Add path to header file under Objective-C Briding Header -> Debug (i.e. MyApp/MyApp-Bridging-Header.h
7. Go to Project/Build Phases/Compile Sources

8. Select all .m files and click enter. Type -fno-objc-arc and hit enter.

9. Use this code to send email:

var mail = SKPSMTPMessage()       
mail.fromEmail = "[email protected]"
mail.toEmail = "[email protected]"
mail.requiresAuth = true
mail.login = "[email protected]"
mail.pass = "password"
mail.subject = "test subject"
mail.wantsSecure = true
mail.relayHost = "smtp.gmail.com"

mail.relayPorts = [587]

var parts: NSDictionary = [
            "kSKPSMTPPartContentTypeKey": "text/plain; charset=UTF-8",
            "kSKPSMTPPartMessageKey": "test message",
]

mail.parts = [parts]

mail.send()

Hope it helps someone. I didn't want to use the MFMailCompose option because I didn't want to have to prompt the user.