DualSlideMenuViewController: refresh on action

AppDelegate.swift

class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?
    let defaults = NSUserDefaults.standardUserDefaults();

    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
      window = UIWindow(frame: UIScreen.mainScreen().bounds)
      storyboard = UIStoryboard(name: "Main", bundle: nil)
      let leftView = storyboard?.instantiateViewControllerWithIdentifier("LeftMenuController")
      let rightView = storyboard?.instantiateViewControllerWithIdentifier("RightMenuController")
      let mainView = storyboard?.instantiateViewControllerWithIdentifier("MainController") as! MainViewController

      let controller = DualSlideMenuViewController(mainViewController: mainView!, leftMenuViewController: leftView!, rightMenuViewController: rightView!)
      controller.delegate = mainView // Assign delegate variable inside DualSlideMenuViewController as MainViewController
      mainView.controller = controller // Assign dualslidemenu controller in MainView as the controller instance
      window!.rootViewController = controller
      window!.makeKeyAndVisible()
      return true
    }
    

MainViewController.swift

import DualSlideMenu

class MainViewController: UIViewController, DualSlideMenuViewControllerDelegate {

/* Initialization Methods */
var controller: DualSlideMenuViewController!

 func onSwipe() {
   if controller.currentState == .Main {
     // Action that will be performed whenever the main screen has appeared after swiping
     // ex. tableView.reloadData()
    }
  }
}