Book Image

iOS 14 Programming for Beginners - Fifth Edition

By : Ahmad Sahar
Book Image

iOS 14 Programming for Beginners - Fifth Edition

By: Ahmad Sahar

Overview of this book

If you're looking to work and experiment with powerful iOS 14 features such as widgets and App Clips to create your own apps, this iOS programming guide is for you. The book offers a comprehensive introduction for experienced programmers who are new to iOS, taking you through the entire process of learning the Swift language, writing your own apps, and publishing them on the App Store. Fully updated to cover the new iOS 14 features, along with Xcode 12 and Swift 5.3, this fifth edition of iOS 14 Programming for Beginners starts with an introduction to the Swift programming language and shows you how to accomplish common programming tasks with it. You'll then start building the user interface (UI) of a complete real-world app using the storyboards feature in the latest version of Xcode and implement the code for views, view controllers, data managers, and other aspects of mobile apps. The book will also help you apply iOS 14 features to existing apps and introduce you to SwiftUI, a new way to build apps for all Apple devices. Finally, you’ll set up testers for your app and understand what you need to do to publish your app on the App Store. By the end of this book, you'll not only be well versed in writing and publishing applications, but you’ll also be able to apply your iOS development skills to enhance existing apps.
Table of Contents (31 chapters)
1
Section 1: Swift
10
Section 2:Design
15
Section 3:Code
24
Section 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

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 by Craig Clayton for this book...