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

Exploring text field and text view delegate methods

Currently, there are a couple of issues with the Add New Journal Entry screen. The first issue is that it’s not possible to dismiss the software keyboard once it appears on the screen. The second issue is that you can click the Save button even when the text field and text view are empty.

To make it easier to work with text fields, Apple has implemented UITextFieldDelegate, a protocol declaring a set of optional methods to manage the editing and validation of text in a text field object. Apple has also implemented UITextViewDelegate, a protocol declaring methods for receiving editing-related messages for text view objects.

You can learn more about the UITextFieldDelegate protocol at this link: https://developer.apple.com/documentation/uikit/uitextfielddelegate.

You can learn more about the UITextViewDelegate protocol at this link: https://developer.apple.com/documentation/uikit/uitextviewdelegate.

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