Presenting view controller function not being called iOS Swift - ios

Question

For this problem, the view controller in which this code is run is in the Login.storyboard IB file. The view controller I am trying to present is in the Main.storyboard IB file. The code below is what I'm using to transition from one view controller to another.
func presentNextView() {
let mainSb: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
let screenAfterLogin: UIViewController = mainSb.instantiateViewControllerWithIdentifier("MainContainerView") as! UIViewController
self.presentViewController(screenAfterLogin, animated: true, completion: nil)
}
Running the application, I set 3 breakpoints on the 3 lines executed in the presentNextView function. Line one is called, line two is called, but line three is NOT called, and the next screen is not presented. Is there something wrong with xCode at the moment?
Checkout the project on github: https://github.com/joshuarcher/RecallBeta
Problem lies in file "HardLoginViewController.swift"

Answer 1

func presentNextView() {
let mainSb: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
let screenAfterLogin: SecondVC = mainSb.instantiateViewControllerWithIdentifier("SecondVC") as SecondVC
let navigationController = UINavigationController(rootViewController: screenAfterLogin)
presentViewController(navigationController, animated: true, completion: nil)
}

Answer 2

class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
presentNextView()
}
func presentNextView() {
let mainSb: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
let screenAfterLogin: SecondVC = mainSb.instantiateViewControllerWithIdentifier("SecondVC") as SecondVC
let navigationController = UINavigationController(rootViewController: screenAfterLogin)
presentViewController(navigationController, animated: true, completion: nil)
}
}
import UIKit
class SecondVC: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
self.title="Second Screen"
}
}