Book Image

Learn SwiftUI

By : Chris Barker
Book Image

Learn SwiftUI

By: Chris Barker

Overview of this book

SwiftUI is the new and powerful interface toolkit that lets you design and build iOS, iPadOS, and macOS apps using declarative syntax. It is a powerful way to develop the UI elements of applications, which would normally be tightly coupled to application logic. Learn SwiftUI will get you up to speed with the framework and cross-device UI development in no time. Complete with detailed explanations and practical examples, this easy-to-follow guide will teach you the fundamentals of the SwiftUI toolkit. You'll learn how to build a powerful iOS and iPadOS application that can be reused for deployment on watchOS. As you progress, you'll delve into UI and unit testing in iOS apps, along with learning how to test your SwiftUI code for multiple devices. The book will also show you how to integrate SwiftUI features such as data binding and network requests into your current application logic. By the end of this book, you will have learned how to build a cross-device application using the SwiftUI framework and Swift programming.
Table of Contents (17 chapters)

Understanding Declarative Syntax

In this chapter, you'll learn about the core fundamentals of the declarative syntax. You'll be able to identify and understand the theory behind it and the part it plays in SwiftUI development. We'll look specifically at how the syntax is written and how easily it can be intercepted and edited in a live debugging environment, all within Xcode. We'll finish off by going deeper into the structure of the syntax and understand how it all binds together. By the end of this chapter, you'll be able to fully understand what advantages are on offer, along with how to comfortably write a basic UI using declarative syntax.

Without declarative syntax, there would be no SwiftUI, or it would simply be another UIKit forcing users to learn a new framework with the same base language. Due to this, it is important to learn the fundamentals...