# Preview(_:as:using:widget:contentStates:) Preview a widget with an activity configuration, using the specified attributes and content states. ``` @freestanding(declaration) macro Preview(_ name: String? = nil, as viewKind: ActivityPreviewViewKind, using attributes: Attributes, widget: @escaping () -> Widget, @PreviewActivityBuilder contentStates: @escaping @MainActor () async -> [Attributes.ContentState]) where Widget : Widget, Attributes : ActivityAttributes ``` ## Parameters `name` An optional display name for the preview that appears in the preview canvas. `viewKind` The kind of widget view to display. `attributes` The attributes with which to configure the widget. `widget` A closure producing the widget to be previewed. `contentStates` A closure building the content states to be previewed. ## Overview Provide the preview with sample data and use it to step through the specified content states and test out the transitions between them. > Note: The attributes must be of the type that the widget expects. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)