how to present ViewController on SWRevealViewController with TabbarController in AppDelegate

Question

I am redirecting my app to specific view controllers on notification click in AppDelegate and for that, I am using setting root view controller method but in my case, open tab bar that base view that is SWRevealViewController with TabbarController of the app and on that present request view controller.

here is what I tried so far:

self.window = UIWindow(frame: UIScreen.main.bounds)
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let homepage = storyboard.instantiateViewController(withIdentifier: "SWRevealViewController")
self.window?.rootViewController = homepage

let rootView = self.window!.rootViewController

let vc = UIStoryboard.init(name: "Ride", bundle: nil).instantiateViewController(withIdentifier:"payAfterPostRequestViewController") as! payAfterPostRequestViewController
rootView!.present(vc, animated: true, completion: nil)

here is what I get by above code:

*Attempt to present <****.payAfterPostRequestViewController: 0x1078e7600> on whose view is not in the window hierarchy!*

Answer 1

may be is not the best way to do it but is almost how I would solve that madness. first try to set a var in the presented viewController

var shouldPresentOtherVC = false
override function viewDidAppear(){
  super.viewDidAppear()
  if shoulPresentOtherVC{
  //do the presentation here

then proceed as you do but omit the present part

self.window = UIWindow(frame: UIScreen.main.bounds)
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let homepage = storyboard.instantiateViewController(withIdentifier: "SWRevealViewController")
self.window?.rootViewController = homepage
self.window?.makeKeyAndVisible()

if the presented viewcontroller is not necesary to tho from specific VC then I used this code. for present the vc.

    extension UIWindow {
    func topViewController() -> UIViewController? {
        var top = self.rootViewController
        while true {
            if let presented = top?.presentedViewController {
                top = presented
            } else if let nav = top as? UINavigationController {
                top = nav.visibleViewController
            } else if let tab = top as? UITabBarController {
                top = tab.selectedViewController
            } else {
                break
            }
        }
        return top
    }
}

to find the topViewController and then after this line

self.window?.rootViewController = homepage`

add this.

let vc = UIStoryboard.init(name: "Ride", bundle: nil).instantiateViewController(withIdentifier:"payAfterPostRequestViewController") as! payAfterPostRequestViewController
self.window?.topViewController.present(vc, animated: true, completion: nil)