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iOS 17 Programming for Beginners

iOS 17 Programming for Beginners

By : Ian Lockett, Ahmad Sahar
4.6 (21)
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iOS 17 Programming for Beginners

iOS 17 Programming for Beginners

4.6 (21)
By: Ian Lockett, Ahmad Sahar

Overview of this book

In a world with nearly 2 million apps on the App Store, the demand for skilled iOS developers has never been higher. "iOS 17 Programming for Beginners, Eighth Edition" is your gateway to this lucrative and dynamic field. This hands-on guide is tailored for those who are new to iOS and takes you on a journey from learning the Swift language to crafting your own app and seeing it thrive on the App Store. Our approach is hands-on and practical. Each chapter is designed to be a stepping stone in your development journey, providing step-by-step tutorials, real-life examples, and clear explanations of complex concepts. As you progress, you'll not only be skilled in Swift but also incorporate cutting-edge technologies into your apps. You'll learn how to publish your creations and harness the power of iOS 17 through a straightforward and easy to program example app divided into manageable parts. By the time you've completed this book, you'll possess the skills and knowledge to not only develop and publish captivating apps but also leverage online resources to continually enhance your app development prowess.
Table of Contents (34 chapters)
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1
Part 1: Swift
11
Part 2: Design
16
Part 3: Code
26
Part 4: Features
32
Other Books You May Enjoy
33
Index

Implementing SwiftData components

Now that you have used the JournalEntry class to create a JournalEntry model, you will create a singleton class that contains a ModelContainer object and a ModelContext instance. You will then add methods to manipulate instances of the JournalEntry model stored in ModelContext.

The term singleton means that there is only one instance of this class in your app, and this is also applicable when you create your own apps that use SwiftData.

Follow these steps:

  1. Right-click the JRNL folder in the Project navigator and choose New File... from the pop-up menu.
  2. iOS should already be selected. Choose Swift File and then click Next.
  3. Name this file SharedData. Click Create. The SharedData file appears in the Project navigator.
  4. Add the following code after the import statement:
    import SwiftData
    

    This lets you use the SwiftData framework.

  1. Add the following code after the import...

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