Dismissing view controller does not goes back to the previous view controller - ios

Question

I am presenting a view controller after pushing another view controller with animation as my application requires it. The code is as given below:
func pushViewController() {
let viewcontroller = UIStoryboard(name: "Home", bundle: nil).instantiateViewController(withIdentifier: "homeSearchIndentifier") as? HomeSearchViewController
let searchViewController = UIStoryboard(name: "Home", bundle: nil).instantiateViewController(withIdentifier: "searchRideIdentifier") as? SearchRideViewController
searchViewController?.parentView = .homeLandingPage
let duration = 0.4
let transition: CATransition = CATransition()
transition.duration = duration
transition.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
transition.type = kCATransitionPush
transition.subtype = kCATransitionFromBottom
self.navigationController!.view.layer.add(transition, forKey: kCATransition)
self.navigationController?.pushViewController(viewcontroller!, animated: false)
viewcontroller?.present(searchViewController!, animated: true, completion: nil)
}
In the presented view controller i am assigning a Side Menu controller as i need to show the side menu while swiping to the right:
override func viewDidLoad() {
super.viewDidLoad()
self.addSearchListScreen()
self.locationManager.delegate = self
yourLocation.layer.sublayerTransform = CATransform3DMakeTranslation(7, 0, 0)
let leftViewController = UIStoryboard(name: "SideBar", bundle: nil).instantiateViewController(withIdentifier: "sideBar") as? SideBarViewController
let slideMenuController = SlideMenuTrackerController(mainViewController: self, leftMenuViewController: leftViewController!)
AppDelegate.sharedInstance().window?.rootViewController = slideMenuController
leftViewController?.mainViewController = self
slideMenuController.automaticallyAdjustsScrollViewInsets = true
AppDelegate.sharedInstance().window?.backgroundColor = UIColor(red: 236.0, green: 238.0, blue: 241.0, alpha: 1.0)
AppDelegate.sharedInstance().window?.makeKeyAndVisible()
}
Now i have a custom back button in this view controller. On clicking it i need to dismiss the view controller and show the view controller from where it was presented . The name is "HomeSearchViewController"
For dismissing i wrote the following code in the button action:
func navigateToPreviousController() {
self.dismiss(animated: true, completion: nil)
}
But this is not dismissing the view controller. May i know what is the issue?

Answer 1

in order to dismiss the view controller your view controller should be embedded inside a navigation controller.
eg:
let controller =storyboard.instantiateViewController(withIdentifier: "storyboardidentifier") as! yourviewcontroller
let navController = UINavigationController(rootViewController: controller)
present(navController, animated: true, completion: nil)
and then on the presented view controller if you use below code it will dismiss the view controller.
func dismissButtonPressed(){
self.dismiss(animated: true, completion: nil)
}
Cheers!!

Answer 2

Edit: My first answer addressed only part of the problem.
Looking further at your code...
It appears you are pushing HomeSearchViewController onto the navigationController stack, and then also presenting SearchRideViewController from HomeSearchViewController.
However...
In:
HomeSearchViewController viewDidLoad()
you create an instance of
SideBarViewController (leftViewController)
and you create an instance of
SlideMenuTrackerController (slideMenuController)
and assign
self as the .mainViewController and
leftViewController as the .leftMenuViewController
of slideMenuController.
If that's not confusing enough, you also:
AppDelegate.sharedInstance().window?.rootViewController = slideMenuController
which replaces HomeSearchViewController ... which you had just pushed onto the navigationController stack!
So, your view hierarchy is now (or, at least, seems to be if I am following your code):
Window
slideMenuController (instance of SlideMenuTrackerController)
+- searchViewController (instance of SearchRideViewController)
+- leftViewController (instance of SideBarViewController)
In order to "get back to" where you came from, you will need to re-create whatever VC you want to get to and (again) replace AppDelegate.sharedInstance().window?.rootViewController.
Without seeing your entire project, I'm not sure how you should really go about that.
[original answer]
In here:
func pushViewController() {
// ... the other lines
self.navigationController?.pushViewController(viewcontroller!, animated: false)
viewcontroller?.present(searchViewController!, animated: true, completion: nil)
}
You push viewcontroller and also .present(searchViewController!... from viewcontroller (that's a bit odd to begin with, but regardless)...
Then in here:
func navigateToPreviousController() {
self.dismiss(animated: true, completion: nil)
}
You .dismiss a view controller, but you never .pop back on the navigation controller's stack.