uniappを利用してジェスチャーパスワード機能を実装する

<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 }"
        @click="selectCircle(index)"
      ></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'
        })
      }
    }
  }
}