[Ebook] Objc - Thinking in SwiftUI

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 we follow them up with exercises to give you hands-on experience.

Since SwiftUI is still in its early days, 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.

BOOK CONTENTS​

• View Updates​

  Learn how to efficiently construct and update view trees in SwiftUI.

• 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, and learn how to create custom animations.

• Advanced Layout​

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

• Preferences and Environment​

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

• Exercises​

  Deepen your understanding by solving the exercises at the end of each chapter.

VIDEO EPISODES​

In the videos we live code the solutions to all the exercises from the book. Furthermore, we build an angle dial control from scratch (similar to what the Photos app uses on macOS to rotate photos), and implement the tree drawing code we've used to create all the tree diagrams in the book in SwiftUI. The videos show how all the concepts explained in the book can be applied in practice.