---
title: "scrollViewDidZoom(_:)"
framework: uikit
role: symbol
role_heading: Instance Method
path: "uikit/uiscrollviewdelegate/scrollviewdidzoom(_:)"
---

# scrollViewDidZoom(_:)

Tells the delegate that the scroll view’s zoom factor changed.

## Declaration

```swift
optional func scrollViewDidZoom(_ scrollView: UIScrollView)
```

## Parameters

- `scrollView`: The scroll-view object whose zoom factor changed.

## See Also

### Managing zooming

- [viewForZooming(in:)](uikit/uiscrollviewdelegate/viewforzooming(in:).md)
- [scrollViewWillBeginZooming(_:with:)](uikit/uiscrollviewdelegate/scrollviewwillbeginzooming(_:with:).md)
- [scrollViewDidEndZooming(_:with:atScale:)](uikit/uiscrollviewdelegate/scrollviewdidendzooming(_:with:atscale:).md)