uniapp中如何实现滑动解锁和手势密码

<view class="slider"></view>

data() {  return {    startX: 0, // 滑块开始滑动的初始位置    moveX: 0,  // 滑块滑动的距离    unlocked: false // 是否解锁成功的标志  }}

methods: {  touchStart(event) {    this.startX = event.touches[0].clientX  },  touchMove(event) {    this.moveX = event.touches[0].clientX - this.startX    // 根据滑块的滑动距离判断是否解锁成功    if (this.moveX >= 80) {      this.unlocked = true    }  },  touchEnd() {    // 根据解锁成功标志判断是否跳转到解锁成功页面    if (this.unlocked) {      uni.navigateTo({        url: '/pages/unlocked/unlocked'      })    }  }}

.slider {  width: 300rpx;  height: 100rpx;  background-color: #ccc;  border-radius: 50rpx;}

<canvas id="canvas"></canvas>

data() {  return {    ctx: null,   // canvas上下文    startX: 0,   // 手指触摸的初始位置    startY: 0,    points: [],  // 绘制路径所需的所有点    password: '' // 用户设置的手势密码  }}

onLoad() {  // 获取canvas上下文  this.ctx = uni.createCanvasContext('canvas', this)}

methods: {  touchStart(event) {    this.startX = event.touches[0].clientX    this.startY = event.touches[0].clientY    // 清除之前的绘制路径    this.points = []  },  touchMove(event) {    let moveX = event.touches[0].clientX - this.startX    let moveY = event.touches[0].clientY - this.startY    // 更新绘制路径的点    this.points.push({x: moveX, y: moveY})    this.ctx.clearRect(0, 0, 300, 300) // 清除canvas    this.drawGesture() // 绘制手势路径  },  touchEnd() {    // 将绘制路径转换成密码    this.password = this.pointsToString(this.points)    console.log('设置的手势密码为：' + this.password)  },  drawGesture() {    this.ctx.beginPath()    this.points.forEach((point, index) => {      if (index === 0) {        this.ctx.moveTo(point.x, point.y)      } else {        this.ctx.lineTo(point.x, point.y)      }    })    this.ctx.stroke()    this.ctx.closePath()    this.ctx.draw()  },  pointsToString(points) {    return points.map(point => {      return Math.floor((point.x + 150) / 100) + Math.floor((point.y + 150) / 100) * 3 + 1    }).join('')  }}

canvas {  width: 300rpx;  height: 300rpx;  background-color: #eee;}