---
title: PreviewActivityBuilder
framework: widgetkit
role: symbol
role_heading: Structure
path: widgetkit/previewactivitybuilder
---

# PreviewActivityBuilder

## Declaration

```swift
@resultBuilder struct PreviewActivityBuilder<A> where A : ActivityAttributes
```

## Topics

### Previewing Live Activities

- [buildArray(_:)](widgetkit/previewactivitybuilder/buildarray(_:).md)
- [buildExpression(_:)](widgetkit/previewactivitybuilder/buildexpression(_:).md)
- [buildPartialBlock(accumulated:next:)](widgetkit/previewactivitybuilder/buildpartialblock(accumulated:next:).md)
- [buildPartialBlock(first:)](widgetkit/previewactivitybuilder/buildpartialblock(first:).md)

## See Also

### Generated structures

- [PreviewRelevanceEntryBuilder](widgetkit/previewrelevanceentrybuilder.md)
- [PreviewTimelineBuilder](widgetkit/previewtimelinebuilder.md)