---
title: AnchorStateEvents
framework: realitykit
role: symbol
role_heading: Enumeration
path: realitykit/anchorstateevents
---

# AnchorStateEvents

Events that trigger on an entity to indicate a change in anchor state.

## Declaration

```swift
enum AnchorStateEvents
```

## Overview

Overview You need to set up SpatialTrackingSession to listen for this event.

## Topics

### Structures

- [AnchorStateEvents.DidAnchor](realitykit/anchorstateevents/didanchor.md)
- [AnchorStateEvents.DidFailToAnchor](realitykit/anchorstateevents/didfailtoanchor.md)
- [AnchorStateEvents.WillUnanchor](realitykit/anchorstateevents/willunanchor.md)

## See Also

### Scene and entity lifecycle events

- [SceneEvents](realitykit/sceneevents.md)
- [ComponentEvents](realitykit/componentevents.md)