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)

Encrypting Core ML models

One of the new features of iOS 14 Core ML is the ability to encrypt your machine learning models on users' devices. Xcode 12 has a new tool that will help you to create a private key that you will deploy to the Apple servers. Your app will download that key and store it securely on the users' devices, and will use the key to decrypt the local (encrypted) model, load that decrypted version into memory (so it is not stored insecurely), and have it ready for use in your app.

The steps to create the key and deploy it to the Apple servers are very straightforward. First, you select your model in the project explorer; in our case, open the TextAnalyzerCloud project, and click on the SentimentPolarity.mlmodel file. Then, click on the Utilities tab:

Figure 10.15 – Model encryption

Now, click on Create Encryption Key. In the popup that appears, select the proper development account for your app:

Figure...