---
title: layoutViewport()
framework: uikit
role: symbol
role_heading: Instance Method
path: uikit/nstextviewportlayoutcontroller/layoutviewport()
---

# layoutViewport()

Performs layout in the viewport.

## Declaration

```swift
func layoutViewport()
```

## Mentioned in

Managing viewport layout and attachment reuse in text views

## See Also

### Accessing the viewport characteristics

- [viewportBounds](uikit/nstextviewportlayoutcontroller/viewportbounds.md)
- [viewportRange](uikit/nstextviewportlayoutcontroller/viewportrange.md)
- [adjustViewport(byVerticalOffset:)](uikit/nstextviewportlayoutcontroller/adjustviewport(byverticaloffset:).md)
- [relocateViewport(to:)](uikit/nstextviewportlayoutcontroller/relocateviewport(to:).md)