# init(hostingDelegateClass:id:) Creates a `UISceneSessionActivationRequest` customized to open a SwiftUI scene with the given identifier. ``` init?(hostingDelegateClass: D.Type, id: String) where D : UIHostingSceneDelegate ``` ## Parameters `hostingDelegateClass` A Class type that conforms to `UIHostingSceneDelegate`. `id` A string matching the `id` of one of the scenes declared in the sceneRepresentation’s content. ## Discussion The specified scene must be declared in the `rootScene` property of your hosting delegate class. The initializer will fail if no scene with the specified identifier is defined. ``` class HostingSceneDelegate: UIHostingSceneDelegate { static var rootScene: some Scene { WindowGroup(id: "swiftui-window") { ContentView() } } } if let requestWithID = UISceneSessionActivationRequest( hostingDelegateClass: HostingSceneDelegate.self, id: "swiftui-window" ) { UIApplication.shared.activateSceneSession(for: requestWithID) } ``` When a UIScene is activated using this request object, its configuration is managed by SwiftUI. You will not see a call to your app delegate’s `application(_:configurationForConnecting:options:)` method. An instance of the provided hosting delegate class will be created by SwiftUI and receive lifecycle callbacks for the associated scene. --- 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)