---
title: "splitViewControllerDidExpand(_:)"
framework: uikit
role: symbol
role_heading: Instance Method
path: "uikit/uisplitviewcontrollerdelegate/splitviewcontrollerdidexpand(_:)"
---

# splitViewControllerDidExpand(_:)

Tells the delegate that the split view controller interface has expanded.

## Declaration

```swift
optional func splitViewControllerDidExpand(_ svc: UISplitViewController)
```

## Parameters

- `svc`: The split view controller whose interface has expanded.

## Discussion

Discussion This delegate method only applies to column-style split view interfaces. For more information, see Split view styles. The split view controller calls this method after its interface has expanded, meaning that isCollapsed is false. Use this method to perform any customization associated with the expanded interface.

## See Also

### Expanding the interface

- [splitViewController(_:displayModeForExpandingToProposedDisplayMode:)](uikit/uisplitviewcontrollerdelegate/splitviewcontroller(_:displaymodeforexpandingtoproposeddisplaymode:).md)
- [splitViewController(_:willShow:)](uikit/uisplitviewcontrollerdelegate/splitviewcontroller(_:willshow:).md)
- [splitViewController(_:didShow:)](uikit/uisplitviewcontrollerdelegate/splitviewcontroller(_:didshow:).md)