---
title: "rotateDigitalCrown(delta:velocity:)"
framework: xcuiautomation
role: symbol
role_heading: Instance Method
path: "xcuiautomation/xcuidevice/rotatedigitalcrown(delta:velocity:)"
---

# rotateDigitalCrown(delta:velocity:)

Simulates the user rotating the Digital Crown on an Apple Watch by the delta amount and speed you provide.

## Declaration

```swift
func rotateDigitalCrown(delta rotationalDelta: CGFloat, velocity: XCUIGestureVelocity)
```

## Parameters

- `rotationalDelta`: A float value that indicates the fraction of a full rotation of the Digital Crown.
- `velocity`: A value that represents how fast to rotate the Digital Crown, in rotations per second.

## Discussion

Discussion Provide a positive value for rotationalDelta to indicate scrolling upward or a negative value to indicate scrolling downward, regardless of the orientation of the watch. A rotationalDelta value of 1.0 indicates a full rotation of the Digital Crown. Specify a velocity in rotations per second; the system ignores the sign of the velocity you provide.

## See Also

### Interacting with buttons and the Digital Crown

- [press(_:)](xcuiautomation/xcuidevice/press(_:).md)
- [hasHardwareButton(_:)](xcuiautomation/xcuidevice/hashardwarebutton(_:).md)
- [XCUIDevice.Button](xcuiautomation/xcuidevice/button.md)
- [rotateDigitalCrown(delta:)](xcuiautomation/xcuidevice/rotatedigitalcrown(delta:).md)