Book Image

SwiftUI Cookbook

By : Giordano Scalzo, Edgar Nzokwe
Book Image

SwiftUI Cookbook

By: Giordano Scalzo, Edgar Nzokwe

Overview of this book

SwiftUI is an innovative and simple way to build beautiful user interfaces (UIs) for all Apple platforms, right from iOS and macOS through to watchOS and tvOS, using the Swift programming language. In this recipe-based book, you’ll work with SwiftUI and explore a range of essential techniques and concepts that will help you through the development process. The recipes cover the foundations of SwiftUI as well as the new SwiftUI 2.0 features introduced in iOS 14. Other recipes will help you to make some of the new SwiftUI 2.0 components backward-compatible with iOS 13, such as the Map View or the Sign in with Apple View. The cookbook begins by explaining how to use basic SwiftUI components. Then, you’ll learn the core concepts of UI development such as Views, Controls, Lists, and ScrollViews using practical implementation in Swift. By learning drawings, built-in shapes, and adding animations and transitions, you’ll discover how to add useful features to the SwiftUI. When you’re ready, you’ll understand how to integrate SwiftUI with exciting new components in the Apple development ecosystem, such as Combine for managing events and Core Data for managing app data. Finally, you’ll write iOS, macOS, and watchOS apps while sharing the same SwiftUI codebase. By the end of this SwiftUI book, you'll have discovered a range of simple, direct solutions to common problems found in building SwiftUI apps.
Table of Contents (15 chapters)

Creating the watchOS version of the iOS app

So far we've created an iOS app and a macOS version of that app, so finally, we'll create the watchOS version. When creating apps for watchOS, we need to keep in mind that the screen space available on watches is small, and make appropriate design choices based on that constraint.

In this recipe, we will create the watchOS version of our insect app.

Getting ready

Download the chapter materials from GitHub:

Open the StartingPoint folder and double-click on Cross-Platform.xcodeproj to open the app that we built in the preceding Creating the macOS version of the iOS app recipe of this chapter. We will be continuing from where we left off in the first recipe.

The complete project can be found in the Complete folder to use as a reference.

How to do it

We will create...