---
title: "init(hostingDelegateClass:value:)"
framework: uikit
role: symbol
role_heading: Initializer
path: "uikit/uiscenesessionactivationrequest-swift.struct/init(hostingdelegateclass:value:)"
---

# init(hostingDelegateClass:value:)

Creates a UISceneSessionActivationRequest customized to open a SwiftUI scene with a presented value.

## Declaration

```swift
init?<H, D>(hostingDelegateClass: H.Type, value: D) where H : UIHostingSceneDelegate, D : Decodable, D : Encodable, D : Hashable
```

## Parameters

- `hostingDelegateClass`: A Class type that conforms to UIHostingSceneDelegate.
- `value`: The data to be presented in the scene.

## Discussion

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(for: FavoriteNumber.self) { $value in             ContentView(favoriteNumber: $value)         }     } }

if let requestWithData = UISceneSessionActivationRequest(     hostingDelegateClass: HostingSceneDelegate.self,     value: FavoriteNumber(13) ) {     UIApplication.shared.activateSceneSession(for: requestWithData) } 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:) method. An instance of the provided hosting delegate class will be created by SwiftUI and receive lifecycle callbacks for the associated scene.