Using UIKit Extensions in SwiftUI: A Guide to Blending Frameworks

Описание: Discover how to leverage your existing `UIImage` extensions in `SwiftUI` effortlessly. Learn how to create circular images and optimize performance in your SwiftUI applications.
---
This video is based on the question https://stackoverflow.com/q/68762969/ asked by the user 'Noah Iarrobino' ( https://stackoverflow.com/u/9154249/ ) and on the answer https://stackoverflow.com/a/68763151/ provided by the user 'George' ( https://stackoverflow.com/u/9607863/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Is it possible to use UIKit extensions in SwiftUI?

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Using UIKit Extensions in SwiftUI: A Guide to Blending Frameworks

SwiftUI has become increasingly popular for building user interfaces on iOS, but many developers have existing UIKit extensions that they want to continue using. One common question is: Is it possible to use UIKit extensions in SwiftUI? If you're grappling with this dilemma, you're in the right place! This post will guide you through using a UIImage extension within a SwiftUI application.

The Problem: Leveraging an Existing UIImage Extension

Imagine you have a fantastic UIImage extension that allows you to render circular images in high quality while consuming less memory. You're interested in reusing this extension in your SwiftUI project. The key challenge is that transitioning between UIKit and SwiftUI can be tricky, particularly if you're new to SwiftUI.

Here's the UIImage extension we want to use:

[[See Video to Reveal this Text or Code Snippet]]

The Solution: Integrating UIKit with SwiftUI

Step 1: Create and Use Your UIImage

You can still create your UIImage as usual. The next step is to convert this UIImage into a format that SwiftUI can understand. This is easily done using the Image(uiImage:) initializer provided by SwiftUI.

Step 2: Optimize Image Loading

To ensure that image creation doesn't impact your app's performance, avoid initializing your UIImage directly in the view body. Instead, use SwiftUI's onAppear(perform:) method to do this efficiently when the view appears on the screen. Here’s how to set it up:

Example Code

[[See Video to Reveal this Text or Code Snippet]]

Key Takeaways

Create your UIImage normally. Utilize the existing UIKit extension to generate the desired UIImage.

Convert to SwiftUI Image. Use Image(uiImage:) to create a SwiftUI image from your UIKit UIImage.

Load images efficiently. Use the onAppear method for image initialization to avoid expensive operations in your view's body.

Conclusion

It is absolutely feasible to use UIKit extensions within your SwiftUI applications! By following the steps outlined in this guide, you can leverage your existing code while enjoying the benefits of SwiftUI. Now you can easily create circular images or implement any other UIKit functionalities you require, without missing a beat.

Happy coding!