Book Image

iOS 15 Programming for Beginners - Sixth Edition

By : Ahmad Sahar, Craig Clayton
5 (1)
Book Image

iOS 15 Programming for Beginners - Sixth Edition

5 (1)
By: Ahmad Sahar, Craig Clayton

Overview of this book

With almost 2 million apps on the App Store, iOS mobile apps continue to be incredibly popular. Anyone can reach millions of customers around the world by publishing their apps on the App Store. iOS 15 Programming for Beginners is a comprehensive introduction for those who are new to iOS. It covers the entire process of learning the Swift language, writing your own app, and publishing it on the App Store. Complete with hands-on tutorials, projects, and self-assessment questions, this easy-to-follow guide will help you get well-versed with the Swift language to build your apps and introduce exciting new technologies that you can incorporate into your apps. You'll learn how to publish iOS apps and work with Mac Catalyst, SharePlay, SwiftUI, Swift concurrency, and much more. By the end of this iOS development book, you'll have the knowledge and skills to write and publish interesting apps, and more importantly, to use the online resources available to enhance your app development journey.
Table of Contents (32 chapters)
1
Part 1: Swift
10
Part 2: Design
15
Part 3: Code
25
Part 4: Features

Getting data from JSON files

In Chapter 14, Getting Data into Collection Views, you learned how to load a file, read data from it using a data manager class, and put it into objects in your app. In this chapter, you will also do the same thing, the difference is that you will be reading data from a JSON file instead of a .plist file. This will simulate reading data from an online web-based service, where JSON is a commonly used format. Let's start by learning more about JSON files and how they work.

Understanding the JSON format

JavaScript Object Notation (JSON) is a way to structure data in a file that can be easily read by both people and computers. Many iOS apps work with an online web-based service to access JSON files, which are then used to provide the app with data.

You will not be learning about how to connect to an online service in this chapter. Instead, you will use sample JSON files downloaded from http://opentable.herokuapp.com, which have been modified...