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

Chapter 17: Getting Started with JSON Files

In the last chapter, you configured the Map screen to display a list of restaurants using data from a .plist file. You configured custom annotations for each restaurant location and configured the callout buttons in them to present the Restaurant Detail screen when tapped. You also organized your code using extensions to make it easier to read and maintain.

In this chapter, you will use data stored in JavaScript Object Notation (JSON) format to populate the Map and Restaurant Detail screens. You'll start by learning about the JSON format, create a data manager class that can load data from JSON files, and modify the MapViewController class to display a list of restaurants from a JSON file instead of a .plist file. Next, you'll configure the LocationViewController class to store the location selected by the user on the Locations screen and pass it to the ExploreViewController instance when the Done button is tapped. After that...