# onChanged(_:) Adds an action to perform when the gesture’s value changes. ``` nonisolated func onChanged(_ action: @escaping (Self.Value) -> Void) -> _ChangedGesture ``` ## Parameters `action` The action to perform when this gesture’s value changes. The `action` closure’s parameter contains the gesture’s new value. ## Return Value A gesture that triggers `action` when this gesture’s value changes. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)