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Learn SwiftUI

By : Chris Barker

2.6 (5)

Learn SwiftUI

2.6 (5)

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.

Preface

Preface

Who this book is for

What this book covers

To get the most out of this book

Get in touch

Getting Started with SwiftUI

Getting Started with SwiftUI

Technical requirements

Introducing Swift as a programming language

Learning about existing UI frameworks

Introducing SwiftUI

When to use SwiftUI, and why

Summary

Questions

Further reading

Free Chapter

Understanding Declarative Syntax

Understanding Declarative Syntax

Technical requirements

What is declarative syntax?

Visualizing declarative syntax

Nesting and decoration

Imperative syntax

Summary

Questions

Further reading

Building Layout and Structure

Building Layout and Structure

Technical requirements

Understanding UI logic – the MVVM architecture

Design patterns in SwiftUI

Summary

Questions

Further reading

Creating Your First Application

Creating Your First Application

Technical requirements

Xcode, as an IDE

Core components of Xcode

Mock data in Automatic Preview

Summary

Questions

Further reading

Understanding Controls, Views, and Lists

Understanding Controls, Views, and Lists

Technical requirements

Exploring and understanding Text and decoration

Creating custom Views in Lists

Adding more controls

Summary

Further reading

Working with Navigation in SwiftUI

Working with Navigation in SwiftUI

Technical requirements

Creating additional Views

App navigation

Accessing with @EnvironmentObject

Summary

Questions

Further reading

Creating a Form with States and Data Binding

Creating a Form with States and Data Binding

Technical requirements

Creating our recipe form View

Adding images from our library

Adding a multiline text input and country picker

Persisting our recipe

Summary

Questions

Networking and Linking to Your Existing App Logic

Networking and Linking to Your Existing App Logic

Technical requirements

Basic networking in SwiftUI

Integrating UIViews with UIViewRepresentable

Integrating ViewControllers with UIViewControllerRepresentable

Other representable protocols

Summary

Questions

Further reading

Maps and Location Services

Maps and Location Services

Technical requirements

Adding a Map with MapKit control

Creating our first pin

Identifying our location

Piecing it all together

Summary

Questions

Further reading

Updating for iPad with NavigationViewStyle

Updating for iPad with NavigationViewStyle

Technical requirements

Updating our project for iPad

Running our app on iPad for the first time

Making better use of NavigationViewStyle

Summary

Questions

Further reading

SwiftUI on watchOS

SwiftUI on watchOS

Technical requirements

Developing for watchOS

Creating a watchOS project

Using SwiftUI to create a list of recipes

Passing data between our app and watchOS

Summary

Questions

Further reading

SwiftUI versus UIKit

SwiftUI versus UIKit

Technical requirements

List view versus UITableView

Data Binding versus Data Source

Comparing decoration techniques

Migrating UIKit ready for SwiftUI

Summary

Questions

Basic Animation in Views

Basic Animation in Views

Technical requirements

The fundamental use of animations

Exploring animation options

Rotation and scaling

Adding animation to our app

Summary

Questions

Further reading

Animations in Transitions

Animations in Transitions

Technical requirements

Basic transitions

Advanced transitions

Adding transitions to our app

Summary

Questions

Testing in SwiftUI

Testing in SwiftUI

Technical requirements

Creating a UI/Unit Test project

Creating our first Unit Test project and tests

Debugging in SwiftUI

Summary

Questions

Further reading

Other Books You May Enjoy

Other Books You May Enjoy

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Technical requirements

For this chapter, you'll need to download Xcode version 11.3 or above from Apple's App Store. You'll also need to be running the latest version of macOS (Catalina or above).

Simply search Xcode in the App Store and select and download the latest version.

Launch Xcode and follow any additional installation instructions that your system may prompt you with. Once Xcode has fully launched, you're ready to go.

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Tech Concepts

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Programming languages

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