Send mail from CollectionViewCell.swift - ios

Question

I am trying to send a mail from the collection view cell controller, but I get error. Here is full code:
import Foundation
import UIKit
import MessageUI
import Parse
import Bolts
class CollectionViewCell: UICollectionViewCell, MFMailComposeViewControllerDelegate {
#IBOutlet weak var imageView: UIImageView!
#IBOutlet weak var imageText: UILabel!
#IBOutlet weak var uploadedTimeLabel: UILabel!
#IBOutlet weak var currentUserLabel: UILabel!
#IBOutlet weak var flagContentButton: UIButton!
var deviceID = [String]()
var parseObject:PFObject?
#IBAction func buttonClick(sender: AnyObject) {
println(deviceID)
let mailComposeViewController = configuredMailComposeViewController()
if MFMailComposeViewController.canSendMail() {
self.presentViewController(mailComposeViewController, animated: true, completion: nil)
} else {
self.showSendMailErrorAlert()
}
}
func configuredMailComposeViewController() -> MFMailComposeViewController {
let mailComposerVC = MFMailComposeViewController()
mailComposerVC.mailComposeDelegate = self // Extremely important to set the --mailComposeDelegate-- property, NOT the --delegate-- property
mailComposerVC.setToRecipients(["test#email.com"])
mailComposerVC.setSubject("Test subject")
mailComposerVC.setMessageBody("Test mail!", isHTML: false)
return mailComposerVC
}
func showSendMailErrorAlert() {
let sendMailErrorAlert = UIAlertView(title: "Could Not Send Email", message: "Your device could not send e-mail. Please check e-mail configuration and try again.", delegate: self, cancelButtonTitle: "OK")
sendMailErrorAlert.show()
}
// MARK: MFMailComposeViewControllerDelegate
func mailComposeController(controller: MFMailComposeViewController!, didFinishWithResult result: MFMailComposeResult, error: NSError!) {
controller.dismissViewControllerAnimated(true, completion: nil)
}
}
Error line:
self.presentViewController(mailComposeViewController, animated: true, completion: nil)
Error code:
'CollectionViewCell' does not have a member named
'presentViewController'
Any suggestions what to do here?

Answer 1

You could use completion blocks or a delegate to notify the view controller, like below. You would set either delegate or notifyViewController on the cell in your cellForItemAtIndexPath. This way, you can tell each cell which controller you want to handle presenting the mail controller and the controller can decide how to do it.
protocol CollectionViewCellDelegate {
func notifyViewController(mailViewController: MFMailComposeViewController)
}
class CollectionViewCell: ... {
//...
var delegate: CollectionViewCellDelegate?
// you could use this completion block property in place of a delegate
var notifyViewController: ((MFMailComposeViewController) -> Void)?
//...
#IBAction func buttonClick(sender: AnyObject) {
println(deviceID)
let mailComposeViewController = configuredMailComposeViewController()
if MFMailComposeViewController.canSendMail() {
delegate?.notifyViewController(mailComposeViewController)
// OR
notifyViewController?(mailComposeViewController)
} else {
self.showSendMailErrorAlert()
}
}
//...
}