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# activateSceneSessionForRequest:errorHandler:

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

```
- (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

[`func requestSceneSessionActivation(UISceneSession?, userActivity: NSUserActivity?, options: UIScene.ActivationRequestOptions?, errorHandler: ((any Error) -> Void)?)`](/documentation/UIKit/UIApplication/requestSceneSessionActivation(_:userActivity:options:errorHandler:))

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


---

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