利用uniapp实现手势密码功能

<template><view><view class="gesture-pwd"><view v-for="(item, index) in 9" :key="index" :data-index="index" class="gesture-pwd-circle" :class="{ 'gesture-pwd-selected': item.selected }"></view></view></view></template><script>export default {  data() {    return {      gesturePwd: [false, false, false, false, false, false, false, false, false],      selectedCircles: []    };  },  methods: {    selectCircle(index) {      this.gesturePwd[index] = !this.gesturePwd[index];      // 更新选中的圆圈      this.selectedCircles = this.gesturePwd        .map((item, i) => (item ? i + 1 : -1))        .filter(item => item !== -1);    }  }};</script><style>.gesture-pwd {  display: flex;  flex-wrap: wrap;  justify-content: space-between;  margin: 32px;}.gesture-pwd-circle {  width: 60px;  height: 60px;  margin: 5px;  border-radius: 50%;  background-color: #ddd;  display: flex;  align-items: center;  justify-content: center;}.gesture-pwd-selected {  background-color: #1890ff;  color: #fff;}</style>

export default {  data() {    return {      gesturePwd: ''    }  },  onBackPress() {    // 处理返回事件，跳转到上一页    uni.navigateBack()    return true  },  methods: {    validateGesturePwd() {      // 获取当前选中的圆圈的索引      const indexes = this.$refs.gesturePwd.selectedCircles      // 将选中的圆圈的索引转换为字符串，用于验证      const validatePwd = indexes.join('')      // 判断手势密码是否正确      if (validatePwd === '123') {        uni.showToast({          title: '手势密码正确',          icon: 'success'        })      } else {        uni.showToast({          title: '手势密码错误',          icon: 'none'        })      }    }  }}