pageViewControllerUIPageViewController

The PageViewController is a fundamental component in many graphical user interfaces, particularly in mobile application development using frameworks like iOS's UIKit. Its primary purpose is to manage a collection of view controllers and present them to the user in a navigable, sequential manner. Typically, this navigation occurs horizontally, allowing users to swipe between distinct "pages" of content.

A PageViewController is often used for tutorials, onboarding flows, image galleries, or any situation where a user needs to progress through a series of distinct screens. It handles the animation and transitions between these view controllers, providing a smooth user experience. The underlying data source for the PageViewController is usually an array of view controller objects. The PageViewController then asks this data source for the view controller that should be displayed before, after, or at the current index.

Key features of a PageViewController include its ability to control the direction of navigation (left-to-right or right-to-left), the presence of page indicators (dots that show the user their current position within the sequence), and delegate methods that allow developers to customize behavior, such as controlling which view controller can be presented next or responding to navigation events. This flexibility makes it a versatile tool for organizing and presenting content in a user-friendly, paginated format.