---
title: "sessionControlsDidBecomeActive(_:)"
framework: avfoundation
role: symbol
role_heading: Instance Method
path: "avfoundation/avcapturesessioncontrolsdelegate/sessioncontrolsdidbecomeactive(_:)"
---

# sessionControlsDidBecomeActive(_:)

Tells the delegate when a capture session’s controls become active and available for interaction.

## Declaration

```swift
func sessionControlsDidBecomeActive(_ session: AVCaptureSession)
```

## Parameters

- `session`: The capture session with active controls.

## See Also

### Responding to control events

- [sessionControlsWillEnterFullscreenAppearance(_:)](avfoundation/avcapturesessioncontrolsdelegate/sessioncontrolswillenterfullscreenappearance(_:).md)
- [sessionControlsWillExitFullscreenAppearance(_:)](avfoundation/avcapturesessioncontrolsdelegate/sessioncontrolswillexitfullscreenappearance(_:).md)
- [sessionControlsDidBecomeInactive(_:)](avfoundation/avcapturesessioncontrolsdelegate/sessioncontrolsdidbecomeinactive(_:).md)