UIScrollViewDelegate

Declaration

@MainActor protocol UIScrollViewDelegate : NSObjectProtocol

Overview

The methods that the UIScrollViewDelegate protocol declares allow the adopting delegate to respond to messages from the UIScrollView class. The delegate responds to and affects operations like scrolling, zooming, deceleration of scrolled content, and scrolling animations.

Topics

Responding to scrolling and dragging

• scrollViewDidScroll(_:)
• scrollViewWillBeginDragging(_:)
• scrollViewWillEndDragging(_:withVelocity:targetContentOffset:)
• scrollViewDidEndDragging(_:willDecelerate:)
• scrollViewShouldScrollToTop(_:)
• scrollViewDidScrollToTop(_:)
• scrollViewWillBeginDecelerating(_:)
• scrollViewDidEndDecelerating(_:)

Managing zooming

• viewForZooming(in:)
• scrollViewWillBeginZooming(_:with:)
• scrollViewDidEndZooming(_:with:atScale:)
• scrollViewDidZoom(_:)

Responding to scrolling animations

• scrollViewDidEndScrollingAnimation(_:)

Responding to inset changes

• scrollViewDidChangeAdjustedContentInset(_:)

Relationships

Inherits From

• NSObjectProtocol

Inherited By

• UICollectionViewDelegate
• UICollectionViewDelegateFlowLayout
• UIScrollViewAccessibilityDelegate
• UITableViewDelegate
• UITextViewDelegate

Conforming Types

• UICollectionViewController
• UITableViewController
• UIWebView

See Also

Responding to scroll view interactions

• delegate