MFMailComposeViewController doesn't read variable into message in Swift - ios

Question

I have small problem. I'm using MFMailComposeViewController to send email after work. So I have var allRuns, and I've printed that var in few places, and it always show value = 3. But in my MailViewController into MessageBody it's equal 0/nil (I've set 0). If it is important- I'm taking var from Firebase, but earlier in the app. Where should I seek problem? That's some code below.
MailViewController:
import UIKit
import MessageUI
class MailViewController: UIViewController, MFMailComposeViewControllerDelegate {
let av = ActualValues()
override func viewDidLoad() {
super.viewDidLoad()
}
//MARK: - Buttons
#IBAction func emailButtonTapped(_ sender: UIButton) {
showMailComposer()
}
#IBAction func backButtonTapped(_ sender: UIButton) {
self.dismiss(animated: true, completion: nil)
}
//MARK: -Func
func showMailComposer() {
if MFMailComposeViewController.canSendMail() {
let mailComposer = MFMailComposeViewController()
mailComposer.mailComposeDelegate = self
mailComposer.setToRecipients(["paereson#gmail.com"])
mailComposer.setSubject("Work of \(av.currentDate())")
mailComposer.setMessageBody("All runs: \(av.allRuns)", isHTML: false)
present(mailComposer, animated: true, completion: nil)
}
}
func mailComposeController(_ controller: MFMailComposeViewController,
didFinishWith result: MFMailComposeResult, error: Error?) {
if let _ = error {
//show alert
controller.dismiss(animated: true, completion: nil)
return
}
switch result {
case .cancelled:
print("Cancelled")
case .failed:
print("Failed")
case .saved:
print("saved")
case .sent:
print("Email sent")
#unknown default:
print("default")
}
controller.dismiss(animated: true, completion: nil)
}
}
Few lines in av = ActualValuse:
var allRuns: Int = 0
var runs: Array? = []
//All runs
func allRunsFunc() {
let ref1 = ref.child("\(currentYear())/\(currentMonth())/\(currentDay())")
ref1.observeSingleEvent(of: .value) { (snapshot) in
if let snapshots = snapshot.children.allObjects as? [DataSnapshot] {
self.allRuns = snapshots.count as Int
}
}
}
EDIT:
Should I use segue before MFMAilComposeViewController? If yes, how should I configure it?
import UIKit
import MessageUI
class MailViewController: UIViewController, MFMailComposeViewControllerDelegate {
let av = ActualValues()
override func viewDidLoad() {
super.viewDidLoad()
}
//MARK: - Buttons
#IBAction func emailButtonTapped(_ sender: UIButton) {
showMailComposer()
}
#IBAction func backButtonTapped(_ sender: UIButton) {
self.dismiss(animated: true, completion: nil)
}
//MARK: -Func
func showMailComposer() {
if MFMailComposeViewController.canSendMail() {
let mailComposer = MFMailComposeViewController()
mailComposer.mailComposeDelegate = self
mailComposer.setToRecipients(["paereson#gmail.com"])
mailComposer.setSubject("Work of \(av.currentDate())")
mailComposer.setMessageBody("\(av.exportText())", isHTML: true)
present(mailComposer, animated: true, completion: nil)
}
}
func mailComposeController(_ controller: MFMailComposeViewController,
didFinishWith result: MFMailComposeResult, error: Error?) {
if let _ = error {
//show alert
controller.dismiss(animated: true, completion: nil)
return
}
switch result {
case .cancelled:
print("Cancelled")
case .failed:
print("Failed")
case .saved:
print("saved")
case .sent:
print("Email sent")
#unknown default:
print("default")
}
controller.dismiss(animated: true, completion: nil)
}
func configureMail(model: ActualValues) {
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.destination is MFMailComposeViewController {
let vc = segue.destination as? MFMailComposeViewController
vc?.configureMail(model: av)
}
}
}

Answer 1

You seem to be missing the execution of allRunsFunc function. Maybe call it in the ActualValue init method.