---
title: "activateSceneSessionForRequest:errorHandler:"
framework: uikit
role: symbol
role_heading: Instance Method
path: "uikit/uiapplication/activatescenesessionforrequest:errorhandler:"
---

# activateSceneSessionForRequest:errorHandler:

Asks the system to activate an existing scene or create a new scene and associate it with your app.

## Declaration

```occ
- (void) activateSceneSessionForRequest:(UISceneSessionActivationRequest *) request errorHandler:(void (^)(NSError *error)) errorHandler;
```

## Parameters

- `request`: The activation request.
- `errorHandler`: A handler to call if the request fails.

## See Also

### Related Documentation

- [requestSceneSessionActivation(_:userActivity:options:errorHandler:)](uikit/uiapplication/requestscenesessionactivation(_:useractivity:options:errorhandler:).md)

### Managing a scene’s life cycle

- [requestSceneSessionDestruction(_:options:errorHandler:)](uikit/uiapplication/requestscenesessiondestruction(_:options:errorhandler:).md)
- [requestSceneSessionRefresh(_:)](uikit/uiapplication/requestscenesessionrefresh(_:).md)
- [UISceneSessionActivationRequest](uikit/uiscenesessionactivationrequest-c.class.md)
- [UIScene.ActivationRequestOptions](uikit/uiscene/activationrequestoptions.md)
- [UISceneDestructionRequestOptions](uikit/uiscenedestructionrequestoptions.md)