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)

Introducing WidgetKit

Users and developers have been requesting a particular feature for years: they all wanted to be able to have widgets on their home screen. Widgets allow users to configure, personalize, and consume little pieces of relevant data from their home screen. They also allow developers to offer users glanceable content and create added value for their apps.

Here is a preview of how a widget (in this case Calendar and Reminders widgets) looks on the home screen on the iPhone:

Figure 1.3 − iOS Home screen with Widgets

Now it is possible on iOS 14, macOS 11, and later versions. Developers can create widgets across iOS, iPadOS and macOS using WidgetKit and the new widget API for SwiftUI.

The Smart Stack on iOS 14 contains a set of different widgets, including the ones that the user opens frequently. If the user enables Smart Rotate, Siri can highlight relevant widgets within custom stacks.

Widgets created on iOS 13 and earlier

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