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Updated for iOS 17 Early Access

Thinking in SwiftUI

A Transition Guide

by Chris Eidhof and Florian Kugler

SwiftUI is radically different from UIKit. In this short book, we will help you build a mental model of how SwiftUI works. We explain the most important concepts in detail and help you build a solid foundation for understanding SwiftUI.

Since SwiftUI is a large framework, the book focuses on the concepts behind the framework that we believe are essential to understand. It is not a reference for SwiftUI’s platform-specific APIs, but rather a guide to honing your intuition about how SwiftUI works.

Thinking in SwiftUI is geared toward developers who have both prior experience with Apple’s platforms and a good understanding of the Swift language.

What’s Early Access?

We're almost finished with writing the book. During the early access phase, we'll release a new chapter every week. There will also be a weekly video Q&A, and you'll have the chance to ask us questions directly. We'll release the final version once the new APIs are out of beta.

Book Contents

  • View Trees

    Learn how view trees form the foundation behind many concepts in SwiftUI.

  • State and Binding

    Learn how to efficiently model, observe and update your state.

  • View Layout

    Understand how the layout algorithm works and how to utilize the built-in layout modifiers and container views.

  • Animations

    Work with implicit and explicit animations, transitions, and learn how to create custom animations.

  • Advanced Layout

    Build custom layout containers using the layout protocol, preferences, geometry readers, and anchors.

  • Preferences and Environment

    Learn how to use SwiftUI's preference and environment systems for your own views.

Formats & Extras

  • Ebook

    • PDF

Buy Book

Buy Ebook

or See Bundle Options ↓

About the Authors

FAQ

  • Will you charge for future updates?

Only when those updates are extensive. For more information on our policy, see book updates.

  • Do I need to know Swift before reading this book?

    We assume you have a working knowledge of Swift and have read the introductory book by Apple. Advanced Swift will be helpful as well.

  • Do you provide training?

    Yes, we provide workshops and training. If you're interested, email us.

  • Can I get a “reverse charge” invoice without VAT?

    Yes, just click the "Generate Invoice" link in the receipt email and fill out your company data to get a VAT refund.

Updates

  • Jun 2023 First preview for the latest SwiftUI version (Xcode 15 / iOS 17)

  • Dec 2020 Updated for the latest SwiftUI version (Xcode 12 / iOS 14)

  • July 2020 First preview for the updated SwiftUI (Xcode 12 / iOS 14)

  • March 2020 Initial release

  • February 2020 Early access