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)

Understanding the Core Data stack

Before you dive right into the project and add Core Data to it, let's take a look at how Core Data works, what it is, and what it isn't. In order to make efficient use of Core Data, you must know what you're working with.

When you work with Core Data, you're utilizing a stack of layers that starts with managed objects and ends with a data store. This data store is often a SQLite database, but there are different storage options you can use with Core Data, depending on your application's needs. Let's take a quick look at the layers involved with Core Data and discuss their roles in an application briefly:

Figure 8.1 – A Core Data stack

At the top right of this diagram is the NSManagedObject class. When you use Core Data, this is the class you'll interact with most often since it's the base class for all the Core Data models that your app contains. For instance, in the app that...