回复
#在HarmonyOS星河遨游# HarmonyOS应用API手势方法-RotationGesture 原创
kraml
发布于 2024-8-16 10:10
浏览
0收藏
描述:用于触发旋转手势事件,触发旋转手势的最少手指为2指,最大为5指,最小改变度数为1度。
Api:从API Version 7开始支持
接口:RotationGesture(value?: { fingers?: number, angle?: number })
参数:
事件:
示例代码:
@Entry
@Component
struct RotationGestureExample {
@State angle: number = 0;
@State rotateValue: number = 0;
build() {
Column() {
Column() {
Text('RotationGesture angle:' + this.angle).fontSize(20)
}
.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%')
}
}
示例效果:
描述:用于触发捏合手势,触发捏合手势的最少手指为2指,最大为5指,最小识别距离为3vp。
Api:从API Version 7开始支持
接口:PinchGesture(value?: { fingers?: number, distance?: number })
参数:
事件:
示例代码:
@Entry
@Component
struct PinchGestureExample {
@State scaleValue: number = 1;
@State pinchValue: number = 1;
@State pinchX: number = 0;
@State pinchY: number = 0;
build() {
Column() {
Column() {
Text('PinchGesture scale:\n' + this.scaleValue).fontSize(20)
Text('PinchGesture center:\n(' + this.pinchX + ',' + this.pinchY + ')').fontSize(20)
}
.height(300)
.width(300)
.padding(20)
.border({ width: 3 })
.margin({ top: 100 })
.scale({ x: this.scaleValue, y: this.scaleValue, z: 1 })
// 三指捏合触发该手势事件
.gesture(
PinchGesture({ fingers: 3 })
.onActionStart((event: GestureEvent) => {
console.info('Pinch start');
})
.onActionUpdate((event: GestureEvent) => {
this.scaleValue = this.pinchValue * event.scale;
this.pinchX = event.pinchCenterX;
this.pinchY = event.pinchCenterY;
})
.onActionEnd(() => {
this.pinchValue = this.scaleValue;
console.info('Pinch end');
})
)
}.width('100%')
}
}
示例效果:
代码地址:(https://gitee.com/jltfcloudcn/jump_to/tree/master/TapGesture)
©著作权归作者所有,如需转载,请注明出处,否则将追究法律责任
分类
已于2024-8-16 10:10:06修改
赞
收藏
回复
相关推荐