Best way to switch UIViewControllers based on different input in an ios application

Question

What I am trying to do simply change views based on some data. To demonstrate exactly what I am trying to do I have constructed a little example to demonstrate. I used a UISegmentedControl to simulate data data then when a button is pressed, it would switch between views based on the value of the UISegmentedControl. Here is the storyboard...

You can see that there is a base view with a UISegmentedControl, then there is a button on that same view that will trigger a switch of view controllers based on the state of the UISegmentedControl to one of the three view controllers on the right. I have included the class of my base UIViewController so that you all can see how I achieve the switching of views.

import UIKit

class RootViewController: UIViewController {

    var nextViewIdentifier: String? = nil

    @IBAction func switchViewButtonPressed(sender: UIButton) {
        if (nextViewIdentifier != nil) {
            let nextView = self.storyboard?.instantiateViewControllerWithIdentifier(nextViewIdentifier!) as! UIViewController
            self.showViewController(nextView, sender: self)
        }
    }


    @IBAction func valueChanged(sender: UISegmentedControl) {
        switch sender.selectedSegmentIndex {
        case 0:
            nextViewIdentifier = "View1"
        case 1:
            nextViewIdentifier = "View2"
        case 2:
            nextViewIdentifier = "View3"
        default:
            nextViewIdentifier = nil
        }
    }  
}

So, the first function switchViewButtonPressed is called when the button is pressed and it will switch the view based on the variable nextViewIdentifier. The second function valueChanged simply changes the nextViewIdentifier variable when a button on UISegmentedControl is pushed.

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All of this code works, but it doesn't seem like a natural way to implement this in a storyboard format. It would seem like there should be something else to achieve the effect that I am looking for. I am asking if anyone has a better way to change views based on data that is not previously known in advance and when these views are completely different. Another way that I assume that I could do this is by just stacking different views in one view controller and then picking the one that I want through a prepareForSegue method. Anyway, any suggestions about what is the best way to switch view controllers in this context is appreciated. Thanks.

Answer 1

In case anyone cares, the way that I solved this problems was by creating segues from main view controller itself and naming the segues with an identifier. Then, based on the position of the UISegmentedControl I called the segue with the identifier with the method self.performSegueWithIdentifier(<String Identifier>, sender: self).