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SwiftUI Cookbook

You're reading from   SwiftUI Cookbook Discover solutions and best practices to tackle the most common problems while building SwiftUI apps

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Product type Paperback
Published in Oct 2020
Publisher Packt
ISBN-13 9781838981860
Length 614 pages
Edition 1st Edition
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Authors (2):
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Edgar Nzokwe Edgar Nzokwe
Author Profile Icon Edgar Nzokwe
Edgar Nzokwe
Giordano Scalzo Giordano Scalzo
Author Profile Icon Giordano Scalzo
Giordano Scalzo
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Toc

Table of Contents (15) Chapters Close

Preface 1. Chapter 1: Using the Basic SwiftUI Views and Controls 2. Chapter 2: Going Beyond the Single Component with Lists and Scroll Views FREE CHAPTER 3. Chapter 3: Viewing while Building with SwiftUI Preview 4. Chapter 4: Creating New Components and Grouping Views in Container Views 5. Chapter 5: Presenting Extra Information to the User 6. Chapter 6: Drawing with SwiftUI 7. Chapter 7: Animating with SwiftUI 8. Chapter 8: Driving SwiftUI with Data 9. Chapter 9: Driving SwiftUI with Combine 10. Chapter 10: Handling Authentication and Firebase with SwiftUI 11. Chapter 11: Handling Core Data in SwiftUI 12. Chapter 12: Cross-Platform SwiftUI 13. Chapter 13: SwiftUI Tips and Tricks 14. Other Books You May Enjoy

Using previews in UIKit

Xcode previews provide a fast and easy way to quickly preview the current state of your view. Previews were introduced in Xcode 11 together with SwiftUI. You might think previews can only be used on SwiftUI apps, but you'll be wrong. UIKit apps can also make use of this great new feature!

In this recipe, we will set up a UIKit view to make it "previewable" in the Xcode canvas.

Getting ready

If you have not yet done so, download the GitHub repository for this book from https://github.com/PacktPublishing/SwiftUI-Cookbook.

How to do it…

We will change the build settings of UIKit to add iOS 13+ capabilities to the debug build, and then set up the UIKit page to preview our code during design and debugging. The steps are as follows:

  1. Open the initial iOS 12 XCode project located at https://github.com/PacktPublishing/SwiftUI-Cookbook/tree/master/Chapter03%20-%20Viewing%20while%20building%20with%20SwiftUI%20Preview/05%20...
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