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

# scrollViewWillBeginDragging(_:)

Tells the delegate when the scroll view is about to start scrolling the content.

## Declaration

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

## Parameters

- `scrollView`: The scroll-view object that’s about to scroll the content view.

## Discussion

Discussion The delegate might not receive this message until dragging has occurred over a small distance.

## See Also

### Responding to scrolling and dragging

- [scrollViewDidScroll(_:)](uikit/uiscrollviewdelegate/scrollviewdidscroll(_:).md)
- [scrollViewWillEndDragging(_:withVelocity:targetContentOffset:)](uikit/uiscrollviewdelegate/scrollviewwillenddragging(_:withvelocity:targetcontentoffset:).md)
- [scrollViewDidEndDragging(_:willDecelerate:)](uikit/uiscrollviewdelegate/scrollviewdidenddragging(_:willdecelerate:).md)
- [scrollViewShouldScrollToTop(_:)](uikit/uiscrollviewdelegate/scrollviewshouldscrolltotop(_:).md)
- [scrollViewDidScrollToTop(_:)](uikit/uiscrollviewdelegate/scrollviewdidscrolltotop(_:).md)
- [scrollViewWillBeginDecelerating(_:)](uikit/uiscrollviewdelegate/scrollviewwillbegindecelerating(_:).md)
- [scrollViewDidEndDecelerating(_:)](uikit/uiscrollviewdelegate/scrollviewdidenddecelerating(_:).md)