Navigation Controller becomes nil from todayextension - ios

Question

i have a today extenstion in which there is a button to launch the app,when the app is launched from this button navigation controller becomes nil
i have no idea why this happens ?
this is my code in appdelegate :
func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey : Any] = [:]) -> Bool {
var storyBoard: UIStoryboard!
var mainViewController: MainViewController!
self.window = UIWindow(frame: UIScreen.main.bounds)
if UserDefaults.getLanguage() == "ar" {
storyBoard = UIStoryboard(name: "MainAR", bundle: nil)
} else {
storyBoard = UIStoryboard(name: "Main", bundle: nil)
}
let viewController = storyBoard.instantiateViewController(withIdentifier: "swRevealController") as! SWRevealViewController
mainViewController = storyBoard.instantiateViewController(withIdentifier: "mainView") as! MainViewController
self.window?.rootViewController = viewController
self.window?.makeKeyAndVisible()
viewController.setFront(mainViewController, animated: true)
if url.scheme == "open"
{
switch url.host
{
case "1"?:
mainViewController.isTaxi = true
break
case "2"?:
mainViewController.isPfp = true
break
case "3"?:
mainViewController.isDarbi = true
break
default:
break
}
}
return true
}
please anyone can help ?

Answer 1

This is because of this line that ovewrites the storyboard navigation
self.window?.rootViewController = viewController
you have to embed it inside a navigation like this
self.window?.rootViewController = UINavigationController(rootViewController: viewController)
Edit: before this line init isTaxi
mainViewController.isTaxi = // set it to true / false
viewController.setFront(mainViewController, animated: true)
//
func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey : Any] = [:]) -> Bool {
var storyBoard: UIStoryboard!
var mainViewController:MainViewController!
self.window = UIWindow(frame: UIScreen.main.bounds)
if UserDefaults.getLanguage() == "ar" {
storyBoard = UIStoryboard(name: "MainAR", bundle: nil)
} else {
storyBoard = UIStoryboard(name: "Main", bundle: nil)
}
mainViewController = storyBoard.instantiateViewController(withIdentifier: "mainView") as! MainViewController
if url.scheme == "open"
{
switch url.host
{
case "1"?:
mainViewController.isTaxi = true
break
case "2"?:
mainViewController.isPfp = true
break
case "3"?:
mainViewController.isDarbi = true
break
default:
break
}
}
let viewController = storyBoard.instantiateViewController(withIdentifier: "swRevealController") as! SWRevealViewController
viewController.setFront(mainViewController, animated: true)
self.window?.rootViewController = UINavigationController(rootViewController: viewController)
self.window?.makeKeyAndVisible()
return true
}