---
title: SpatialPreviewSession
framework: spatialpreview
role: symbol
role_heading: Protocol
path: spatialpreview/spatialpreviewsession
---

# SpatialPreviewSession

A session that manages the lifecycle and connection state of a spatial preview on a visionOS device.

## Declaration

```swift
protocol SpatialPreviewSession : AnyObject, Observable
```

## Topics

### Instance Properties

- [progress](spatialpreview/spatialpreviewsession/progress.md)
- [state](spatialpreview/spatialpreviewsession/state.md)

### Instance Methods

- [close()](spatialpreview/spatialpreviewsession/close().md)

## Relationships

### Inherits From

- [Observable](observation/observable.md)

### Conforming Types

- [DocumentPreviewSession](spatialpreview/documentpreviewsession.md)
- [USDPreviewSession](spatialpreview/usdpreviewsession.md)

## See Also

### Preview sessions

- [DocumentPreviewSession](spatialpreview/documentpreviewsession.md)
- [USDPreviewSession](spatialpreview/usdpreviewsession.md)