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)

Debugging in SwiftUI

In the olden days, the thought of your IDE being able to debug your application was unheard of you could spend hours looking for that bug only to find it was a missing semicolon.

In this section, we'll cover the options available to us in Xcode that will help make our daily lives just a little easier. We'll start by taking a look at how to add breakpoints to our app, followed by good old-fashioned print statements.

Understanding breakpoints

Breakpoints have been around for a while now, and not just in Xcode other IDEs such as Visual Studio make great use of breakpoints to debug applications on the fly.

In a nutshell, by adding a breakpoint at a specific line in your code, when...