觸摸事件

當(dāng)手指在組件上按下、滑動、抬起時觸發(fā)。

說明：
開發(fā)前請熟悉鴻蒙開發(fā)指導(dǎo)文檔 ：[gitee.com/li-shizhen-skin/harmony-os/blob/master/README.md]
從API Version 7開始支持。后續(xù)版本如有新增內(nèi)容，則采用上角標(biāo)單獨(dú)標(biāo)記該內(nèi)容的起始版本。

事件

TouchEvent對象說明

TouchObject對象說明

HistoricalPoint10+對象說明

示例

// xxx.ets
@Entry
@Component
struct TouchExample {
  @State text: string = ''
  @State eventType: string = ''

  build() {
    Column() {
      Button('Touch').height(40).width(100)
        .onTouch((event?: TouchEvent) = > {
          if(event){
            if (event.type === TouchType.Down) {
              this.eventType = 'Down'
            }
            if (event.type === TouchType.Up) {
              this.eventType = 'Up'
            }
            if (event.type === TouchType.Move) {
              this.eventType = 'Move'
            }
            this.text = 'TouchType:' + this.eventType + 'nDistance between touch point and touch element:nx: '
            + event.touches[0].x + 'n' + 'y: ' + event.touches[0].y + 'nComponent globalPos:('
            + event.target.area.globalPosition.x + ',' + event.target.area.globalPosition.y + ')nwidth:'
            + event.target.area.width + 'nheight:' + event.target.area.height
          }
        })
      Button('Touch').height(50).width(200).margin(20)
        .onTouch((event?: TouchEvent) = > {
          if(event){
            if (event.type === TouchType.Down) {
              this.eventType = 'Down'
            }
            if (event.type === TouchType.Up) {
              this.eventType = 'Up'
            }
            if (event.type === TouchType.Move) {
              this.eventType = 'Move'
            }
            this.text = 'TouchType:' + this.eventType + 'nDistance between touch point and touch element:nx: '
            + event.touches[0].x + 'n' + 'y: ' + event.touches[0].y + 'nComponent globalPos:('
            + event.target.area.globalPosition.x + ',' + event.target.area.globalPosition.y + ')nwidth:'
            + event.target.area.width + 'nheight:' + event.target.area.height
          }
        })
      Text(this.text)
    }.width('100%').padding(30)
  }
}

審核編輯 黃宇