The UIKit framework provides the core objects that you need to build apps for iOS and tvOS. You use these objects to display your content onscreen, to interact with that content, and to manage interactions with the system. Apps rely on UIKit for their basic behavior, and UIKit provides many ways for you to customize that behavior to match your specific needs.

Includes knowledge areas


Auto Layout dynamically calculates the size and position of all the views in the view hierarchy, based on constraints placed on those views.


Storyboards allow to prototype and design multiple view controller views within one file, and also create transitions between view controllers.

Size classes

Groups of screen sizes that are applied to the width and height of the device screen.

Collection View

A collection view is a way to present an ordered set of data items using a flexible and changeable layout.

Table View

A table view displays a single column of vertically scrolling content, divided into rows and sections.

Stack View

Stack views leverage the power of Auto Layout, creating user interfaces that can dynamically adapt to the device’s orientation, screen size, and any changes in the available space.

Text View

A text view displays multiline, styled text content.

Web View

A web view loads and displays rich web content, such as embedded HTML and websites, directly within the app.

Is a part of:



The rich text element allows you to create and format headings, paragraphs, blockquotes, images, and video all in one place instead of having to add and format them individually. Just double-click and easily create content.

Static and dynamic content editing

A rich text element can be used with static or dynamic content. For static content, just drop it into any page and begin editing. For dynamic content, add a rich text field to any collection and then connect a rich text element to that field in the settings panel. Voila!

How to customize formatting for each rich text

Headings, paragraphs, blockquotes, figures, images, and figure captions can all be styled after a class is added to the rich text element using the "When inside of" nested selector system.