---
title: UITransitionContextViewControllerKey
framework: uikit
role: symbol
role_heading: Structure
path: uikit/uitransitioncontextviewcontrollerkey
---

# UITransitionContextViewControllerKey

The keys you use to identify the view controllers involved in a transition.

## Declaration

```swift
struct UITransitionContextViewControllerKey
```

## Topics

### Keys

- [from](uikit/uitransitioncontextviewcontrollerkey/from.md)
- [to](uikit/uitransitioncontextviewcontrollerkey/to.md)

### Initializers

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

## Relationships

### Conforms To

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

## See Also

### Constants

- [UITransitionContextViewKey](uikit/uitransitioncontextviewkey.md)