You're reading from iOS 17 Programming for Beginners - Eighth Edition

Product type Book

Published in Oct 2023

Publisher Packt

ISBN-13 9781837630561

Pages 604 pages

Edition 8th Edition

Languages

Swift

Concepts

Application Development

Author (1):

Ahmad Sahar

Table of Contents (34) Chapters

Preface

1. Part 1: Swift

2. Exploring Xcode

3. Simple Values and Types

4. Conditionals and Optionals

5. Range Operators and Loops

6. Collection Types

7. Functions and Closures

8. Classes, Structures, and Enumerations

9. Protocols, Extensions, and Error Handling

10. Swift Concurrency

11. Part 2: Design

12. Setting Up the User Interface

13. Building Your User Interface

14. Finishing Up Your User Interface

15. Modifying App Screens

16. Part 3: Code

17. Getting Started with MVC and Table Views

18. Getting Data into Table Views

19. Passing Data between View Controllers

20. Getting Started with Core Location and MapKit

21. Getting Started with JSON Files

22. Getting Started with Custom Views

23. Getting Started with the Camera and Photo Library

24. Getting Started with Search

25. Getting Started with Collection Views

26. Part 4: Features

27. Getting Started with SwiftData

28. Getting Started with SwiftUI

29. Getting Started with Widgets

30. Getting Started with visionOS

31. Testing and Submitting Your App to the App Store

32. Other Books You May Enjoy

33. Index

Loading and saving JSON data

Now that you have modified the JournalEntry class to conform to the Codable protocol, you are ready to implement loading data from and saving data to JSON files.

There are many ways to load and save app data. In Chapter 23, Getting Started with SwiftData, you’ll learn how to use SwiftData to load and save app data.

To make it easier for you to work with JSON files, Apple provides JSONDecoder and JSONEncoder classes.

A JSONDecoder instance decodes instances of a data type from JSON objects, and you will use it when loading files from your device storage.

To learn more about JSONDecoder, see https://developer.apple.com/documentation/foundation/jsondecoder.

A JSONEncoder instance encodes instances of a data type to JSON objects, and you will use it when saving files to your device storage.

To learn more about JSONEncoder, see https://developer.apple.com/documentation/foundation/jsonencoder.

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