#鸿蒙学习大百科#如何监听加速度传感器的变化

import sensor from '@ohos.sensor'

let lastTime: number = 0
let lastX: number = 0
let lastY: number = 0
let lastZ: number = 0

@Entry
@Component
struct Index {
  aboutToAppear(): void {
    //监听加速度传感器
    sensor.on(sensor.SensorId.ACCELEROMETER, (data) => {
      let currentTime = new Date().getTime()
      let time = currentTime - lastTime
      // xyz轴加速度值
      let x = data.x
      let y = data.y
      let z = data.z
      // 计算加速度变化
      let accel = Math.abs(x + y + z - lastX - lastY - lastZ) / time * 10000
    }, { interval: 100000000 })
  }

  build() {
    Column() {
    }.width("100%")
    .height("100%")
  }
}