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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

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:

  1. 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

  1. 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

  1. 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...

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