UIResponder

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

Right-click the control or object in your current view controller. Drag the cursor to the view controller you want to present. Select the kind of segue you want from the list that Xcode provides.

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 .