---
title: zIndex
framework: uikit
role: symbol
role_heading: Instance Property
path: uikit/uicollectionviewlayoutattributes/zindex
---

# zIndex

Specifies the item’s position on the z axis.

## Declaration

```swift
var zIndex: Int { get set }
```

## Discussion

Discussion This property is used to determine the front-to-back ordering of items during layout. Items with higher index values appear on top of items with lower values. Items with the same value have an undetermined order. The default value of this property is 0.

## See Also

### Accessing the layout attributes

- [frame](uikit/uicollectionviewlayoutattributes/frame.md)
- [bounds](uikit/uicollectionviewlayoutattributes/bounds.md)
- [center](uikit/uicollectionviewlayoutattributes/center.md)
- [size](uikit/uicollectionviewlayoutattributes/size.md)
- [transform3D](uikit/uicollectionviewlayoutattributes/transform3d.md)
- [transform](uikit/uicollectionviewlayoutattributes/transform.md)
- [alpha](uikit/uicollectionviewlayoutattributes/alpha.md)
- [isHidden](uikit/uicollectionviewlayoutattributes/ishidden.md)