旋转手势事件

接口

RotationGesture(value?: { fingers?: number, angle?: number })

参数：

事件

示例

// xxx.ets
@Entry
@Component
struct RotationGestureExample {
  @State angle: number = 0
  @State rotateValue: number = 0

  build() {
    Column() {
      Column() {
        Text('RotationGesture angle:' + this.angle)
      }
      .height(200)
      .width(300)
      .padding(20)
      .border({ width: 3 })
      .margin(80)
      .rotate({ angle: this.angle })
      // 双指旋转触发该手势事件
      .gesture(
      RotationGesture()
        .onActionStart((event: GestureEvent) => {
          console.info('Rotation start')
        })
        .onActionUpdate((event: GestureEvent) => {
          this.angle = this.rotateValue + event.angle
        })
        .onActionEnd(() => {
          this.rotateValue = this.angle
          console.info('Rotation end')
        })
      )
    }.width('100%')
  }
}