# AppExtensionScene An interface you use to provide a specific scene from your app extension’s UI. ``` @MainActor @preconcurrency protocol AppExtensionScene ``` ## Overview When your app extension provides custom UI, use this type to define a specific scene for that UI. An app extension can define multiple scene types in coordination with the host app. When the host app displays the app extension’s UI, it provides a unique string identifier for the scene it wants to display. The app extension responds by providing an instance of this type that contains that scene’s contents. When defining a scene, provide the body of that scene using the [`PrimitiveAppExtensionScene`](/documentation/ExtensionKit/PrimitiveAppExtensionScene) type. This type contains the unique identifier of the scene and the content to display. The following code shows an implementation of a scene capable of displaying content you supply at initialization time using a closure. The scene’s [`body`](/documentation/ExtensionKit/AppExtensionScene/body-swift.property) property repackages that content inside the [`PrimitiveAppExtensionScene`](/documentation/ExtensionKit/PrimitiveAppExtensionScene) structure. You can also use this type to accept a scene-specific XPC connection, which you might use to communicate custom data related to managing UI-related interactions. ``` struct MyScene: AppExtensionScene { public init(content: @escaping () -> Content) { self.content = content } private let content: () -> Content public var body: some AppExtensionScene { PrimitiveAppExtensionScene(id: “MyScene”) { content() } onConnection: { connection in // TODO: Configure the XPC connection and return true return false } } } ``` For more information about creating UI-based app extensions, see . ## Topics ### Configuring the app extension [`var body: Self.Body`](/documentation/ExtensionKit/AppExtensionScene/body-swift.property) The content and behavior of the scene’s interface. [`associatedtype Body : AppExtensionScene`](/documentation/ExtensionKit/AppExtensionScene/Body-swift.associatedtype) The type for this scene’s body. ## Relationships ### Conforming Types [`PrimitiveAppExtensionScene`](/documentation/ExtensionKit/PrimitiveAppExtensionScene) --- 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)