---
title: UITraitEnvironmentLayoutDirection
framework: uikit
role: symbol
role_heading: Enumeration
path: uikit/uitraitenvironmentlayoutdirection
---

# UITraitEnvironmentLayoutDirection

Constants that indicate the layout direction associated with the current environment.

## Declaration

```swift
enum UITraitEnvironmentLayoutDirection
```

## Topics

### Constants

- [UITraitEnvironmentLayoutDirection.unspecified](uikit/uitraitenvironmentlayoutdirection/unspecified.md)
- [UITraitEnvironmentLayoutDirection.leftToRight](uikit/uitraitenvironmentlayoutdirection/lefttoright.md)
- [UITraitEnvironmentLayoutDirection.rightToLeft](uikit/uitraitenvironmentlayoutdirection/righttoleft.md)

### Initializers

- [init(_:)](uikit/uitraitenvironmentlayoutdirection/init(_:).md)
- [init(rawValue:)](uikit/uitraitenvironmentlayoutdirection/init(rawvalue:).md)

## Relationships

### Conforms To

- [BitwiseCopyable](swift/bitwisecopyable.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [RawRepresentable](swift/rawrepresentable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Retrieving interface-related traits

- [userInterfaceStyle](uikit/uitraitcollection/userinterfacestyle.md)
- [UIUserInterfaceStyle](uikit/uiuserinterfacestyle.md)
- [userInterfaceIdiom](uikit/uitraitcollection/userinterfaceidiom.md)
- [UIUserInterfaceIdiom](uikit/uiuserinterfaceidiom.md)
- [userInterfaceLevel](uikit/uitraitcollection/userinterfacelevel.md)
- [UIUserInterfaceLevel](uikit/uiuserinterfacelevel.md)
- [layoutDirection](uikit/uitraitcollection/layoutdirection.md)
- [resolvesNaturalAlignmentWithBaseWritingDirection](uikit/uitraitcollection/resolvesnaturalalignmentwithbasewritingdirection-58wlh.md)
- [accessibilityContrast](uikit/uitraitcollection/accessibilitycontrast.md)
- [UIAccessibilityContrast](uikit/uiaccessibilitycontrast.md)
- [legibilityWeight](uikit/uitraitcollection/legibilityweight.md)
- [UILegibilityWeight](uikit/uilegibilityweight.md)
- [activeAppearance](uikit/uitraitcollection/activeappearance.md)
- [UIUserInterfaceActiveAppearance](uikit/uiuserinterfaceactiveappearance.md)
- [toolbarItemPresentationSize](uikit/uitraitcollection/toolbaritempresentationsize.md)