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You're reading from  SwiftUI Cookbook - Third Edition

Product typeBook
Published inDec 2023
Reading LevelIntermediate
PublisherPackt
ISBN-139781805121732
Edition3rd Edition
Languages
Swift
Tools
SwiftUI
Concepts
Design
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Author (1)
Juan C. Catalan
Juan C. Catalan
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Juan C. Catalan

Juan C. Catalan is a software engineer with more than 18 years of professional experience. He started mobile development back in the days of iOS 3. Juan has worked as a professional iOS developer in many industries, including medical devices, financial services, real estate, document management, fleet tracking and industrial automation. He has contributed to more than 30 published apps in the App Store, some of them with millions of users. Juan gives back to the iOS development community with technical talks, mentoring developers, reviewing technical books and now as a book author. He lives in Austin, Texas, with his wife Donna, where they spend time with their kids.
Read more about Juan C. Catalan

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Using previews in UIKit

If you love the ease with which you can preview UI changes, but you are still working on UIKit projects, rest easy, as you can also use the canvas preview feature while building UIKit apps. With Xcode 15, the preview macros work with UIKit out of the box. Under the hood, Xcode adds the boilerplate code to wrap UIKit views and view controllers in SwiftUI views, so they can be previewed in the canvas.

In this recipe, we will learn how to preview a UIViewController and a UIView on the Xcode canvas.

Getting ready

Since this book is about SwiftUI and we are going to add previews to a UIKit app, we have already provided the UIKit app as a starter project, so you can focus on the preview functionality. It is very important that you clone or download the code for this chapter from GitHub, as explained in the Technical requirements section.

How to do it…

We will use the UIkit app provided and then add a couple of preview macros. The steps...

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SwiftUI Cookbook - Third Edition
Published in: Dec 2023Publisher: PacktISBN-13: 9781805121732
© 2023 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Juan C. Catalan

Juan C. Catalan is a software engineer with more than 18 years of professional experience. He started mobile development back in the days of iOS 3. Juan has worked as a professional iOS developer in many industries, including medical devices, financial services, real estate, document management, fleet tracking and industrial automation. He has contributed to more than 30 published apps in the App Store, some of them with millions of users. Juan gives back to the iOS development community with technical talks, mentoring developers, reviewing technical books and now as a book author. He lives in Austin, Texas, with his wife Donna, where they spend time with their kids.
Read more about Juan C. Catalan

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