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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

Creating a new UIImagePickerController instance

To make it easy for a user to use the camera or photo library, Apple implemented the UIImagePickerController class. This class manages the system interfaces for taking photos and choosing items from the user’s photo library. An instance of this class is called an image picker controller.

If you have ever added a photo to a social media post, you will have seen what the image picker controller looks like. It typically displays either the view from your camera or a grid of photos from your photo library, and you can then choose a photo to be added to your post:

Figure 20.1: Simulator showing image picker controller

To learn more about the UIImagePickerController class, see https://developer.apple.com/documentation/uikit/uiimagepickercontroller.

To display the image picker controller in the Add New Journal Entry screen, you’ll add a UITapGestureRecognizer instance, or tap gesture recognizer...

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