SwiftUI Fundamentals

The essential guide to SwiftUI core concepts and APIs

SwiftUI Fundamentals by Natalia Panferova book coverSwiftUI Fundamentals by Natalia Panferova book cover
  • Explore the key APIs and design patterns that form the foundation of SwiftUI
  • Develop a deep, practical understanding of how SwiftUI works under the hood
  • Gain the knowledge needed to write efficient, maintainable, and expressive code
  • Understand how SwiftUI’s core principles apply to real-world development challenges
  • Learn from a former Apple engineer who worked on widely used SwiftUI APIs

Want to try reading a sample for free? You can download the free sample bundle or read the sample chapter online.
You can also check out the table of contents to get an idea of what's inside.

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What is included

  • Online book access
  • High quality EPUB and PDF downloads
  • Free lifetime updates to the book

What it covers

  • SwiftUI's declarative approach to building adaptive user interfaces across Apple platforms
  • The App protocol and scene management, including lifecycle events and multi-window support
  • The View protocol and how SwiftUI tracks view identity, updates, and dependency changes
  • Techniques for building modular, reusable views with custom view composition and clear data dependencies
  • SwiftUI's data flow system, including state, bindings, observable classes, environment, and preferences
  • View modifiers and styles, with guidance on creating custom modifiers for reusable, consistent designs
  • Text initialization, formatting, and localization for multilingual, accessible applications
  • The SwiftUI layout process, layout containers, and custom layout implementations using the Layout protocol
  • Navigation with TabView, NavigationStack, and NavigationSplitView, including programmatic navigation
  • Modal presentations, programmatic dismissal techniques, and managing multiple modals simultaneously
  • Implicit and explicit animations, view transitions, and interactive animations with gestures
  • SwiftUI's accessibility features, including built-in support for assistive technologies
  • Methods for customizing accessibility elements and improving content legibility

Who the book is for

SwiftUI Fundamentals is written for developers who have experimented with SwiftUI and want to deepen their understanding of how the framework works. This is not a step-by-step tutorial. Instead, the book focuses on the foundational concepts that power SwiftUI across Apple platforms. It covers the most important APIs and the key principles that drive the framework, providing a solid foundation to help you write more efficient, maintainable, and expressive code. The goal is to go beyond surface-level knowledge, giving you the tools to understand why SwiftUI behaves the way it does and to solve real-world problems independently and with confidence.

About the author

Natalia's photoNatalia's photo
Natalia PanferovaiOS and macOS engineer

Natalia has many years of experience building mobile apps, working in both small startups and large companies. Before founding Nil Coalescing in April 2022, she was part of the core SwiftUI team at Apple, where she contributed to the design and development of key SwiftUI APIs. She is deeply passionate about Swift, SwiftUI, and the Apple ecosystem and enjoys sharing her knowledge with the community through blog posts, talks, and books.

Full table of contents

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