how to manage which controller should show in parent view controller? - ios

Question

I have a parent view controller with 5 container view as you can see in image :
but when I run my app ,all child view controllers are shown blow by blow and they dismiss and goes back to my starter view controller (which is initial view controller and I push my parent navigation controller form it).
I want to know how to prevent it and how to show my first view controller when parent view controller showed ?

Answer 1

I don't know what is wrong with storyboard but my problem was :
because I adde 5 container view to my main view controller and connected all of them to their view controllers by segue it presents all of them and then close main view controller .
I clean all segue and container views from storyboard and I did it like this :
private lazy var firstViewController: AvailableView = {
let storyboard = UIStoryboard(name: "Main", bundle: Bundle.main)
var viewController = storyboard.instantiateViewController(withIdentifier: "AvailableViewID") as! AvailableView
self.add(asChildViewController: viewController)
return viewController
}()
private lazy var secondViewController: NotificationView = {
let storyboard = UIStoryboard(name: "Main", bundle: Bundle.main)
var viewController = storyboard.instantiateViewController(withIdentifier: "NotificationViewID") as! NotificationView
self.add(asChildViewController: viewController)
return viewController
}()
private func add(asChildViewController viewController: UIViewController) {
addChild(viewController)
view.addSubview(viewController.view)
viewController.view.frame = view.bounds
viewController.view.autoresizingMask = [.flexibleWidth, .flexibleHeight]
viewController.didMove(toParent: self)
}
private func remove(asChildViewController viewController: UIViewController) {
viewController.willMove(toParent: nil)
viewController.view.removeFromSuperview()
viewController.removeFromParent()
}
and the way you can use it :
in viewDidLoad():
add(asChildViewController: firstViewController)
and when you wanted to present second view controller you should remove first View Controller and then add your second view controller like so:
remove(asChildViewController: firsttViewController)
add(asChildViewController: secondViewController)
you can see this link for more explanation : https://cocoacasts.com/managing-view-controllers-with-container-view-controllers/
hope to help any one else :)