---
title: init()
framework: uikit
role: symbol
role_heading: Initializer
path: uikit/uitraitcollection/init()
---

# init()

Creates a trait collection whose traits are set to their default (unspecified) values.

## Declaration

```swift
init()
```

## Return Value

Return Value A trait collection whose traits are set to “unspecified”.

## See Also

### Creating a trait collection

- [init(userInterfaceIdiom:)](uikit/uitraitcollection/init(userinterfaceidiom:).md)
- [init(horizontalSizeClass:)](uikit/uitraitcollection/init(horizontalsizeclass:).md)
- [init(verticalSizeClass:)](uikit/uitraitcollection/init(verticalsizeclass:).md)
- [init(userInterfaceStyle:)](uikit/uitraitcollection/init(userinterfacestyle:).md)
- [init(accessibilityContrast:)](uikit/uitraitcollection/init(accessibilitycontrast:).md)
- [init(userInterfaceLevel:)](uikit/uitraitcollection/init(userinterfacelevel:).md)
- [init(legibilityWeight:)](uikit/uitraitcollection/init(legibilityweight:).md)
- [init(forceTouchCapability:)](uikit/uitraitcollection/init(forcetouchcapability:).md)
- [init(displayScale:)](uikit/uitraitcollection/init(displayscale:).md)
- [init(displayGamut:)](uikit/uitraitcollection/init(displaygamut:).md)
- [init(layoutDirection:)](uikit/uitraitcollection/init(layoutdirection:).md)
- [init(preferredContentSizeCategory:)](uikit/uitraitcollection/init(preferredcontentsizecategory:).md)
- [init(activeAppearance:)](uikit/uitraitcollection/init(activeappearance:).md)
- [init(toolbarItemPresentationSize:)](uikit/uitraitcollection/init(toolbaritempresentationsize:).md)
- [init(hdrHeadroomUsageLimit:)](uikit/uitraitcollection/init(hdrheadroomusagelimit:)-5zqph.md)