---
title: layer
framework: quartzcore
role: symbol
role_heading: Instance Property
path: quartzcore/carenderer/layer
---

# layer

The root layer of the layer-tree the receiver should render.

## Declaration

```swift
var layer: CALayer? { get set }
```

## See Also

### Related Documentation

- [Core Animation Programming Guide](apple-archive/documentation/Cocoa/Conceptual/CoreAnimation_guide/Introduction.md)