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)

Passing data between view controllers

So, the next part of our app is to pass some data over to our new details view but to do this, we need to create a new View Controller and hook up our labels and images to some outlets.

The code that fetches contact information also needs to be updated too, so a contact's phone number, email address, and postal address are fetched.

Finally, the contact data needs to be passed from the overview to the details page so the details page can display the data. The steps involved in this process are the following:

  1. Updating the data loading
  2. Passing the model to the details page
  3. Updating our outlets
  4. Best practices (creating a view model)

Let's now go through each step.

Updating the data loading

Currently, the code in ViewController.swift specifies that just the given name, family name, image data, and image availability for a contact should be fetched.

This needs to be expanded so the email address,...