Apple developer technologies

If you are not familiar with the code and you want to find ViewController coresponding to given view, then you can try:

Views are the fundamental building blocks of your app’s user interface , and the UIView class defines the behaviors that are common to all views. A view object renders content within its bounds rectangle, and handles any interactions with that content.

In iOS development, the view controllers are the foundation of the Application’s internal structure . The View Controller is the parent of all the views present on a storyboard. Each application has at least one ViewController. It facilitates the transition between various parts of the user interface.

The easiest way to switch between screens in iOS is. Add a button on the current screen. Then press control and drag the button to the target screen. Then select push .