How do I switch ViewController instead of adding to stack?

Question

I have a number of objects linking to each other in a circle. Each object holds a reference to it's neighbors, square and triangle are different class types:

The tow classes, triangle and square, are made visible with a ViewController, and they link to each other with segues.

So far, no problem. However, while I'm browsing around in my structure, I keep adding ViewControllers on top of each other. Not only does this seem a bad practice memory-wise, but it also presents the problem that when I want to quit this structure, I have to back-track by closing all ViewControllers that I opened.

So what I'm looking for, is a way to not add the next ViewController on top of the current on in the stack, but to replace the current ViewController with the next one.

I've been looking for a while for a solution, but have little success. So I feel that doing what I want is either impossible, or I'm just not getting an obvious point and don't know what to look for. Do I need a RootViewController for something like this? Or should I create a custom segue that dismisses the old ViewController before adding the new one? I'm really at a loss here.

Answer 1

Add all subView once , in viewDidLoad and give tags to all you SubView after that where you you want to show that view in viewController don't add it just bring it to front by calling the function [[self.view viewWithTag:1]bringToFront]