# supportedActivityFamilies An environment value that that indicates potential rendered family for a Live Activity. ``` var supportedActivityFamilies: Set { get set } ``` ## Discussion To detect the currently rendered activity family size, use the environment variable. The `supportedActivityFamilies` environment value might only be useful if your make you make your Live Activity views available in a Swift package. --- 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)