---
title: didActivate
framework: foundation
role: symbol
role_heading: Type Property
path: foundation/notificationcenter/messageidentifier/didactivate
---

# didActivate

## Declaration

```swift
static var didActivate: NotificationCenter.BaseMessageIdentifier<UIScene.DidActivateMessage> { get }
```

## See Also

### Identifying UIKit scene messages

- [systemProtectionDidChange](foundation/notificationcenter/messageidentifier/systemprotectiondidchange.md)
- [willConnect](foundation/notificationcenter/messageidentifier/willconnect.md)
- [willEnterForeground](foundation/notificationcenter/messageidentifier/willenterforeground-992xq.md)
- [willDeactivate](foundation/notificationcenter/messageidentifier/willdeactivate.md)
- [didEnterBackground](foundation/notificationcenter/messageidentifier/didenterbackground-5fqw0.md)