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)

Chapter 16: Creating Your First Widget

With iOS 14, Apple introduced WidgetKit. Users are now able to use widgets on their home screens. By displaying small amounts of useful information on the home screen, widgets provide a key functionality to users that was long-awaited. Some examples are checking stock market prices, weather or traffic conditions, the next meeting on your calendar, and so on with just a glance at the home screen. The use cases are limitless!

In this chapter, you will learn about the basic foundations of WidgetKit, as well as the key aspects of widget design and their limitations. Then, we will build a widget from scratch. Starting with a very simple, small-sized widget, we will extend its capabilities by creating new sizes, network calls, dynamic configurations, placeholder views, and much more! We will discuss all these topics in the following sections:

  • Introducing widgets and WidgetKit
  • Developing your first widget

By the end of this chapter...