Failed on using Swift to implement in-app email - ios

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 = ["lipeilin#gatech.edu"]
myMail.setToRecipients(toRecipients)
//CC recipients
var ccRecipients = ["tzhang85#gatech.edu"]
myMail.setCcRecipients(ccRecipients)
//CC recipients
var bccRecipients = ["tzhang85#gatech.edu"]
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.
Download a zip of this repo: https://github.com/jetseven/skpsmtpmessage
Drag and drop the files under SMTPLibrary into your XCode project
Create a new header file - MyApp-Briding-Header.h
Replace new header file with this:
#import "Base64Transcoder.h"
#import "HSK_CFUtilities.h"
#import "NSData+Base64Additions.h"
#import "NSStream+SKPSMTPExtensions.h"
#import "SKPSMTPMessage.h"
Go to Project(Targets > MyApp on the left)/Build Settings/Swift Compiler - Code Generation
Add path to header file under Objective-C Briding Header -> Debug (i.e. MyApp/MyApp-Bridging-Header.h
Go to Project/Build Phases/Compile Sources
Select all .m files and click enter. Type -fno-objc-arc and hit enter.
Use this code to send email:
var mail = SKPSMTPMessage()
mail.fromEmail = "fromemail#gmail.com"
mail.toEmail = "tomail#gmail.com"
mail.requiresAuth = true
mail.login = "fromemail#gmail.com"
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.

Answer 3

This is how I have composed my email with attached PDF file document.
Just to test this example you need to drag and drop a sample PDF named "All_about_tax.pdf"
#IBAction func sendEmail(sender: UIButton)
{
//Check to see the device can send email.
if( MFMailComposeViewController.canSendMail() )
{
print("Can send email.")
let mailComposer = MFMailComposeViewController()
mailComposer.mailComposeDelegate = self
//Set to recipients
mailComposer.setToRecipients(["your email id here"])
//Set the subject
mailComposer.setSubject("Tax info document pdf")
//set mail body
mailComposer.setMessageBody("This is what they sound like.", isHTML: true)
if let filePath = NSBundle.mainBundle().pathForResource("All_about_tax", ofType: "pdf")
{
print("File path loaded.")
if let fileData = NSData(contentsOfFile: filePath)
{
print("File data loaded.")
mailComposer.addAttachmentData(fileData, mimeType: "application/pdf", fileName: "All_about_tax.pdf")
}
}
//this will compose and present mail to user
self.presentViewController(mailComposer, animated: true, completion: nil)
}
else
{
print("email is not supported")
}
}
func mailComposeController(controller: MFMailComposeViewController, didFinishWithResult result: MFMailComposeResult, error: NSError?)
{
self.dismissViewControllerAnimated(true, completion: nil)
}