# state The current state of the session. ``` @Published.State> final var state: GroupSession.State { get } ``` ## Discussion Use this property to get the current state value, or configure a subscriber to detect changes to the value. To change the state of a session, call the [`join()`](/documentation/GroupActivities/GroupSession/join()) and [`leave()`](/documentation/GroupActivities/GroupSession/leave()) methods. If a failure occurs or the session ends, the session object transitions to the [`GroupSession.State.invalidated(reason:)`](/documentation/GroupActivities/GroupSession/State-swift.enum/invalidated(reason:))state. If the session ends because of an error, it provides information about that error. --- 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)