preview in swiftui
Asked on 08/12/2024
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At WWDC 2024, several updates related to previews in SwiftUI were introduced. In the session titled "What’s new in Xcode 16," new APIs were highlighted that simplify the creation and management of previews. These include the previewable macro, which can be attached to property wrappers like state, allowing you to use them directly within a preview block. This eliminates the need for wrapper views and reduces boilerplate code. Additionally, the preview modifier API was introduced to make it easier to share environment or data for previews, enhancing reusability and performance by caching data.
Moreover, in the session "What’s new in SwiftUI," it was mentioned that Xcode Previews now have a dynamic linking architecture, which allows developers to switch between a preview and build and run without needing to rebuild the project, thus increasing iteration speed.
For more detailed information, you can refer to the session What’s new in Xcode 16 (02:49) and What’s new in SwiftUI (14:17).
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