18.3 Scenes

Each SwiftUI application will contain one or more scenes. A scene represents a section or region of the application’s user interface. On iOS and watchOS a scene will typically take the form of a window which takes up the entire device screen. SwiftUI applications running on macOS and iPadOS, on the other hand, will likely be comprised of multiple scenes. Different scenes might, for example, contain context specific layouts to be displayed when tabs are selected by the user within a dialog, or to design applications that consist of multiple windows.

SwiftUI includes some pre-built primitive scene types that can be used when designing applications, the most common of which being WindowGroup and DocumentGroup. It is also possible to group scenes together to create your own custom scenes.