You're reading from iOS 17 Programming for Beginners Unlock the world of iOS development with Swift 5.9, Xcode 15, and iOS 17 – your path to App Store success

Product type Paperback

Published in Oct 2023

Publisher Packt

ISBN-13 9781837630561

Length 604 pages

Edition 8th Edition

Languages

Swift

Tools

iOS

Concepts

Application Development

Authors (2):

Ian Lockett

Ahmad Sahar

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Table of Contents (34) Chapters

Preface

1. Part 1: Swift

2. Exploring Xcode FREE CHAPTER

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

Getting Started with JSON Files

In the previous chapter, you modified the Add Journal Entry screen so that the user can add their current location to a new journal entry, and configured the Map screen to display a region centered on your current location as well as pins representing the location where the journal entries are made. However, since the JournalListViewController class and the MapViewController class are using separate instances of the SampleJournalEntryData structure, newly added journal entries do not appear on the Map screen as pins. Also, all the journal entries are lost when you quit the app.

In this chapter, you will create a singleton, SharedData, that will provide journal entry data to both the Journal List and Map screens. This class will also be used to load journal entry data from a file on your device when the app starts up and save journal entry data to a file on your device when you add or delete journal entries.

You’ll start by creating the...