Custom segue to sibling view controller - ios

Question

I have 3 pages that should segue like so...
,-(1)-> Home <-(2)-,
v v
Login ----(3)---> Register
where Login -> Register segue is triggered by a "Don't have an account? Register now." button, you know, something like that... Also, mind the unidirectional arrow.
All segues are already implemented, except for one: when a segue with this order is triggered:
Home -> Login -> Register -> Home
where Register -> Home is triggered via back button.
Basically, I need to know how to set Register's parentViewController to Home so that when the Back button is pressed (which then calls performSegueWithIdentifier with my custom unwind segue), Register would then unwind to Home.
Based on the segue order chain mentioned above, Register unwinds to a dismissed Login, I believe.
P.S. I'm using the interface builder for the views.
P.S. Login and Register are presented MODALLY, so they go on top of Home

Answer 1

To add custom animation to present view controller using custom animation
You have call self. performAnimation() function on your back button of Registration and Login. The below code is for Registration and Home screen.
// This function will be present in your Registration viewController
func performAnimation() {
//Your storyboard name
let mainStoryboard = UIStoryboard(name: "Main", bundle: nil)
let YourNavigationController = mainStoryboard.instantiateViewControllerWithIdentifier("YourNavigationController") as! UINavigationController
let mainVC = mainStoryboard.instantiateViewControllerWithIdentifier("YourHomeScreenIdentifier") as! YourHomeScreen
initialNavigationController.viewControllers = [mainVC]
self.presentViewController(YourNavigationController, animated: false, completion: nil)
(mainVC as YourHomeScreen).fromRegisterSelector()
}
//These function or line of code should be present in your Home viewController
func fromRegisterSelector()
{
hasComeHereFromRegVC = true
}
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(animated)
if hasComeHereFromRegVC
{
addSignInViewAndAnimateIt()
}
}
func addSignInViewAndAnimateIt()
{
hasComeHereFromRegVC = false
let mainStoryBoard = UIStoryboard(name: "Main", bundle: nil)
let mainNavigationController = mainStoryBoard.instantiateViewControllerWithIdentifier("YourNavigationController") as! UINavigationController
let RegVC = mainStoryBoard.instantiateViewControllerWithIdentifier("RegViewController") as! YourRegViewController
mainNavigationController.viewControllers = [RegVC]
self.view.addSubview(mainNavigationController.view)
self.view.bringSubviewToFront(mainNavigationController.view)
UIView.animateWithDuration(0.3, animations: {
// To change the screen sliding direction change the origin.x to origin.y and frame.width to frame.height in the line below
mainNavigationController.view.frame.origin.x += self.view.frame.width
}) { (finished) -> Void in
mainNavigationController.view.removeFromSuperview()
}
}
Hope this will help you.