RotationGesture
NOTE This gesture is supported since API version 7. Updates will be marked with a superscript to indicate their earliest API version.
Required Permissions
None
APIs
RotationGesture(options?: { fingers?: number, angle?: number })
- Parameters
| Name | Type | Mandatory | Default Value | Description |
|---|---|---|---|---|
| fingers | number | No | 2 | Minimum number of fingers to trigger a rotation. The value ranges from 2 to 5. |
| angle | number | No | 1.0 | Minimum degree that can trigger the rotation gesture. |
Events
| Name | Description |
|---|---|
| onActionStart((event?: GestureEvent) => void) | Callback invoked when a rotation gesture is recognized. |
| onActionUpdate((event?: GestureEvent) => void) | Callback invoked during the movement of the rotation gesture. |
| onActionEnd((event?: GestureEvent) => void) | Callback invoked when the finger used for the rotation gesture is lift. |
| onActionCancel(event: () => void) | Callback invoked when a tap cancellation event is received after the rotation gesture is recognized. |
- GestureEvent attributes related to the rotation gesture
| Name | Type | Description |
|---|---|---|
| angle | number | Rotation angle. |
Example
@Entry
@Component
struct RotationGestureExample {
@State angle: number = 0
build() {
Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.SpaceBetween }) {
Text('RotationGesture angle:' + this.angle)
}
.height(100).width(200).padding(20).border({ width:1 })
.margin(80).rotate({ x:1, y:2, z:3, angle: this.angle })
.gesture(
RotationGesture()
.onActionStart((event: GestureEvent) => {
console.log('Rotation start')
})
.onActionUpdate((event: GestureEvent) => {
this.angle = event.angle
})
.onActionEnd(() => {
console.log('Rotation end')
})
)
}
}
