Pushing a ViewController Through a UIScrollView

I have a custom uiscrollview class that has certain views and buttons. When I press a button in this custom scrollview, I want to present a new viewcontroller. Since this scroll view is inside of a view controller, and the custom class doesn't have the authority to push view controllers like a navigation controller, how do I push a new view controller through this uiscrollview class without throwing an error? Whenever I create a new navigationcontroller and an instance of the viewcontroller that I want inside of the method for when the button is pressed, and I present that viewcontroller, I get an error. Also, all of this is programatic and dynamic, not though storyboard. Thanks.