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)

Creating a watchOS project

In this section, we'll start by taking our existing recipe project and through Xcode, we'll go through and, learn how to create a Watch App for iOS App.

Once we've done that, we'll take a look at the updated project structure, and, as per the previous section, we'll be able to see in more detail the separation between the WatchKit App and the extension.

Updating our project

Let's start by heading on over to Xcode and highlighting the project name at the top of the File Tree. With the project tree highlighted, take a look at the column to the right, which contains a list of projects and targets.

At the bottom of the column, you should see a + button. Click on this and...