Book Image

Mastering iOS 14 Programming - Fourth Edition

By : Mario Eguiluz Alebicto, Chris Barker, Donny Wals
Book Image

Mastering iOS 14 Programming - Fourth Edition

By: Mario Eguiluz Alebicto, Chris Barker, Donny Wals

Overview of this book

Mastering iOS 14 development isn’t a straightforward task, but this book can help you do just that. With the help of Swift 5.3, you’ll not only learn how to program for iOS 14 but also be able to write efficient, readable, and maintainable Swift code that reflects industry best practices. This updated fourth edition of the iOS 14 book will help you to build apps and get to grips with real-world app development flow. You’ll find detailed background information and practical examples that will help you get hands-on with using iOS 14's new features. The book also contains examples that highlight the language changes in Swift 5.3. As you advance through the chapters, you'll see how to apply Dark Mode to your app, understand lists and tables, and use animations effectively. You’ll then create your code using generics, protocols, and extensions and focus on using Core Data, before progressing to perform network calls and update your storage and UI with the help of sample projects. Toward the end, you'll make your apps smarter using machine learning, streamline the flow of your code with the Combine framework, and amaze users by using Vision framework and ARKit 4.0 features. By the end of this iOS development book, you’ll be able to build apps that harness advanced techniques and make the best use of iOS 14’s features.
Table of Contents (22 chapters)

Developing your first App Clip

In this section, we are going to start with an existing app, and we will add an App Clip to it step by step. Open the AppClipExample_start project in this book's code bundle. If you launch the app, you will see that we have a coffee shop app in which we can order three different types of drinks, review the order, and pay by Apple Pay or by entering our credit card details:

Figure 14.3 – Our app's main screens – Menu, Payment, and Credit Card controllers

Note that the purpose of this example app is to help us build the interesting part: the App Clip. Some functionalities, such as the credit card and Apple Pay payments, are not fully implemented; they just simulate this feature.

Before we jump into the App Clip process, let's take a moment to review the project's structure and its contents:

Figure 14.4 – Initial project structure

The app contains a single target...