# WKApplicationDelegateAdaptor A property wrapper that is used in `App` to provide a delegate from WatchKit. ``` @MainActor @preconcurrency @propertyWrapper struct WKApplicationDelegateAdaptor where DelegateType : NSObject, DelegateType : WKApplicationDelegate ``` ## Topics ### Creating a delegate adaptor [`init(_:)`](/documentation/SwiftUI/WKApplicationDelegateAdaptor/init(_:)) Creates an `WKApplicationDelegateAdaptor` using a WatchKit Application Delegate. ### Getting the delegate adaptor [`projectedValue`](/documentation/SwiftUI/WKApplicationDelegateAdaptor/projectedValue) A projection of the observed object that creates bindings to its properties using dynamic member lookup. [`wrappedValue`](/documentation/SwiftUI/WKApplicationDelegateAdaptor/wrappedValue) The underlying delegate. --- 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)