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)

Requesting a user's location

As you can imagine, giving an application access to your exact location is quite a big deal. In the wrong hands, this data could allow people with malicious intentions to know exactly where you are at any given time and abuse this knowledge in many different ways. For this reason, it's essential that you only request a user's location if you absolutely have to. Simply using it for a small feature, or to make sure a user is in some arbitrary location before they sign up for a service, might not always be a good enough reason to ask for a user's location.

Let's see now the different ways to ask the user for permission to access their location data in iOS.

Asking for permission to access location data

When you do need access to a user's location, you have to ask permission first. Similar to how you have to add a reason for needing the camera or a user's contacts to the Info.plist file, you must also provide a reason...