---
title: "overrideTraitCollection(forChild:)"
framework: uikit
role: symbol
role_heading: Instance Method
path: "uikit/uiviewcontroller/overridetraitcollection(forchild:)"
---

# overrideTraitCollection(forChild:)

Retrieves the trait collection for a child view controller.

## Declaration

```swift
func overrideTraitCollection(forChild childViewController: UIViewController) -> UITraitCollection?
```

## Parameters

- `childViewController`: The view controller who’s trait collection is to be returned.

## Return Value

Return Value The trait collection for the designated view controller.

## Discussion

Discussion Use this method to retrieve the trait collection for a child view controller. You can then modify the trait collection for the designated child view controller and set it using the setOverrideTraitCollection(_:forChild:) method.

## See Also

### Deprecated methods

- [setOverrideTraitCollection(_:forChild:)](uikit/uiviewcontroller/setoverridetraitcollection(_:forchild:).md)
- [attemptRotationToDeviceOrientation()](uikit/uiviewcontroller/attemptrotationtodeviceorientation().md)
- [registerForPreviewing(with:sourceView:)](uikit/uiviewcontroller/registerforpreviewing(with:sourceview:).md)
- [unregisterForPreviewing(withContext:)](uikit/uiviewcontroller/unregisterforpreviewing(withcontext:).md)
- [canPerformUnwindSegueAction(_:from:withSender:)](uikit/uiviewcontroller/canperformunwindsegueaction(_:from:withsender:).md)
- [didRotate(from:)](uikit/uiviewcontroller/didrotate(from:).md)
- [dismissMoviePlayerViewControllerAnimated()](uikit/uiviewcontroller/dismissmovieplayerviewcontrolleranimated().md)
- [forUnwindSegueAction(_:from:withSender:)](uikit/uiviewcontroller/forunwindsegueaction(_:from:withsender:).md)
- [presentMoviePlayerViewControllerAnimated(_:)](uikit/uiviewcontroller/presentmovieplayerviewcontrolleranimated(_:).md)
- [rotatingFooterView()](uikit/uiviewcontroller/rotatingfooterview().md)
- [rotatingHeaderView()](uikit/uiviewcontroller/rotatingheaderview().md)
- [segueForUnwinding(to:from:identifier:)](uikit/uiviewcontroller/segueforunwinding(to:from:identifier:).md)
- [shouldAutomaticallyForwardRotationMethods()](uikit/uiviewcontroller/shouldautomaticallyforwardrotationmethods().md)
- [willAnimateRotation(to:duration:)](uikit/uiviewcontroller/willanimaterotation(to:duration:).md)
- [willRotate(to:duration:)](uikit/uiviewcontroller/willrotate(to:duration:).md)