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)

Setting up geofences

Sometimes, your app doesn't really need to know the details of the user's whereabouts. Sometimes, you're only interested in tracking whether the user has exited or left a certain area, in order to show certain content in your app or to unlock some kind of special feature. Core Location has great support for monitoring geofences. A geofence is a certain area that is defined using a certain GPS coordinate and a circular radius around this point. In Core Location, geofences are set up using CLRegion subclasses. Core Location provides two different region types that you can use:

  • CLCircularRegion
  • CLBeaconRegion

A CLCircularRegion type is used to set up a geofence, as described before. A CLBeaconRegion type is used with physical BLE iBeacons, and essentially provides geofencing in a very small radius, for instance, just a couple of meters. In this section, you will learn how to set up a CLCircularRegion type that is set up around a user...