Simple, custom navigation between 4 view controllers - ios

Question

I have UIScrollView which contains many following Subscription View Controllers. Each Subscription View Controller contains Container View Controller.
The target is to do a simple navigation between 4 Views Controllers at the right side.
Navigation logic:
On viewDidLoad show first or second View Controller in Container
When the user press a button on View Controller show the third View Controller in the Container
I tried to use Segues but this didn't work. The way to instantiate VCs to
Subscription View Controller is not good idea.

Answer 1

Use this code to switch the container views view...
#IBOutlet weak var container: UIView!
var currentViewController:UIViewController?
//put the view did load method here.
#IBAction func buttonPressed() {
//the storyboard file that the view is in.
let storyboard:UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
// the container view you want to switch to.
self.currentViewController = storyboard.instantiateViewControllerWithIdentifier("containerViewStoryboardID") as? UIViewController
//switch the container view.
self.addChildViewController(self.currentViewController!)
self.container.addSubview(self.currentViewController!.view)
self.currentViewController!.didMoveToParentViewController(self)
}

Answer 2

The simplest way I found is to create custom Segue.
Creating custom UIStoryboardSegue
Go to File -> New -> File... and choose Cocoa Class
Create a new class from UIStoryboardSegue
Configurate MySegue
import UIKit
class NewSegue: UIStoryboardSegue {
//Call when performSegueWithIdentifier() called
override func perform() {
//ViewController segue FROM
var sourceViewController: UIViewController = self.sourceViewController as! UIViewController
//ViewController segue TO
var destinationViewController: UIViewController = self.destinationViewController as! UIViewController
//Parent ViewController - ContainerViewController
var containerViewController: UIViewController = sourceViewController.parentViewController!
//Setting destinationViewController
containerViewController.addChildViewController(destinationViewController)
destinationViewController.view.frame = sourceViewController.view.frame
sourceViewController.willMoveToParentViewController(nil)
//Do animation
containerViewController.transitionFromViewController(sourceViewController,
toViewController: destinationViewController,
duration: 0.3,
options: UIViewAnimationOptions.TransitionCrossDissolve,
animations: nil, completion: { finished in
//Delete sourceViewController
sourceViewController.removeFromParentViewController()
//Show destinationViewController
destinationViewController.didMoveToParentViewController(containerViewController)
})
}
}
Go to your Storyboard file and do control drag from ContainerViewController to needed Controller and choose Custom in context menu
3.Click on created segue and configure them
Now you can call performSegueWithIdentifier("SugueID", sender: self) in your ContainerViewController or in other ViewController