---
title: "buildPartialBlock(first:)"
framework: widgetkit
role: symbol
role_heading: Type Method
path: "widgetkit/previewactivitybuilder/buildpartialblock(first:)"
---

# buildPartialBlock(first:)

## Declaration

```swift
static func buildPartialBlock(first: [A.ContentState]) -> [A.ContentState]
```

## See Also

### Previewing Live Activities

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