---
title: "coachingOverlayViewWillActivate(_:)"
framework: arkit
role: symbol
role_heading: Instance Method
path: "arkit/arcoachingoverlayviewdelegate/coachingoverlayviewwillactivate(_:)"
---

# coachingOverlayViewWillActivate(_:)

Tells you when the coaching overlay view activates.

## Declaration

```swift
optional func coachingOverlayViewWillActivate(_ coachingOverlayView: ARCoachingOverlayView)
```

## Discussion

Discussion Override this function to hide your app’s UI while the coaching overlay is active.

## See Also

### Enabling Coaching

- [coachingOverlayViewDidDeactivate(_:)](arkit/arcoachingoverlayviewdelegate/coachingoverlayviewdiddeactivate(_:).md)