---
title: containerViewDidLayoutSubviews()
framework: uikit
role: symbol
role_heading: Instance Method
path: uikit/uipresentationcontroller/containerviewdidlayoutsubviews()
---

# containerViewDidLayoutSubviews()

Notifies the presentation controller when layout ends on the views of the container view.

## Declaration

```swift
func containerViewDidLayoutSubviews()
```

## Discussion

Discussion UIKit calls this method after adjusting the layout of the views in the container view. Use this method to make any additional changes to the view hierarchy. In iOS 18 and later, UIKit supports automatic trait tracking inside this method for traits from this presentation controller’s traitCollection and the traitCollection of its containerView. For more information, see Automatic trait tracking. This method supports automatic observation tracking. For more information, see Updating views automatically with observation tracking.

## See Also

### Observing data in presentation controllers

- [containerViewWillLayoutSubviews()](uikit/uipresentationcontroller/containerviewwilllayoutsubviews().md)