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

View More author details

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

Testing your app on different devices

Now that you have implemented all the code required to dynamically set collection view cell size, you’ll test your app on different simulated devices and on your Mac. Follow these steps:

Simulator should still be set to iPad. Build and run your app. It will display two columns as shown:

Figure 22.34: Simulator showing iPad screen with two columns

Choose Rotate Left from the Device menu, and you’ll still see two columns, but the cells have expanded in size to fill the screen:

Figure 22.35: Simulator showing iPad screen rotated to the left with two columns

Stop your app and choose iPhone SE (3rd Generation) from the Scheme menu. Run your app on Simulator again, and it will display a single column as shown:

Figure 22.36: Simulator showing iPhone screen with a single column

Simulator will not automatically close the iPad instance when it launches the iPhone...