# DynamicProperty An interface for a stored variable that updates an external property of a view. ``` protocol DynamicProperty ``` ## Overview The view gives values to these properties prior to recomputing the view’s [`body`](/documentation/SwiftUI/View/body-8kl5o). ## Topics ### Updating the value [`update()`](/documentation/SwiftUI/DynamicProperty/update()) Updates the underlying value of the stored value. ## Relationships ### Conforming Types [`AccessibilityFocusState`](/documentation/SwiftUI/AccessibilityFocusState) [`Binding`](/documentation/SwiftUI/Binding) [`AppStorage`](/documentation/SwiftUI/AppStorage) [`FetchRequest`](/documentation/SwiftUI/FetchRequest) [`FocusState`](/documentation/SwiftUI/FocusState) [`SectionedFetchRequest`](/documentation/SwiftUI/SectionedFetchRequest) [`GestureState`](/documentation/SwiftUI/GestureState) [`Namespace`](/documentation/SwiftUI/Namespace) [`FocusedObject`](/documentation/SwiftUI/FocusedObject) [`WKExtensionDelegateAdaptor`](/documentation/SwiftUI/WKExtensionDelegateAdaptor) [`NSApplicationDelegateAdaptor`](/documentation/SwiftUI/NSApplicationDelegateAdaptor) [`ObservedObject`](/documentation/SwiftUI/ObservedObject) [`PhysicalMetric`](/documentation/SwiftUI/PhysicalMetric) [`EnvironmentObject`](/documentation/SwiftUI/EnvironmentObject) [`UIApplicationDelegateAdaptor`](/documentation/SwiftUI/UIApplicationDelegateAdaptor) [`SceneStorage`](/documentation/SwiftUI/SceneStorage) [`WKApplicationDelegateAdaptor`](/documentation/SwiftUI/WKApplicationDelegateAdaptor) [`ScaledMetric`](/documentation/SwiftUI/ScaledMetric) [`Environment`](/documentation/SwiftUI/Environment) [`StateObject`](/documentation/SwiftUI/StateObject) [`FocusedValue`](/documentation/SwiftUI/FocusedValue) [`State`](/documentation/SwiftUI/State) [`FocusedBinding`](/documentation/SwiftUI/FocusedBinding) --- 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)