我这边使用的是uview组件库，进行开发的！ 

<template>
  <view class="footer-bar">
    <u-tabbar :value="select ? select : 0" @change="changeTab" :border="true" :fixed="true" :placeholder="true"
      activeColor="#d81e06" :safeAreaInsetBottom="false">
      <u-tabbar-item :text="item.title" v-for="(item, index) in footerBarList" :key="index">
        <image class="u-page__item__slot-icon" slot="active-icon" :src="item.select_img"></image>
        <image class="u-page__item__slot-icon" slot="inactive-icon" :src="item.img"></image>
      </u-tabbar-item>
    </u-tabbar>
  </view>
</template>

<script>
export default {
  name: "FooterBar",
  data() {
    return {
      select: 0,
      footerBarList: [
        {
          img: "/static/home.png",
          select_img: "/static/home_select.png",
          pagePath: "pages/home/home",
          title: "首页",
        },
        {
          img: "/static/dai_ban.png",
          select_img: "/static/dai_ban_select.png",
          pagePath: "pages/treatTackle/treatTackle",
          title: "待办",
        },
        {
          img: "/static/mine.png",
          select_img: "/static/mine_select.png",
          pagePath: "pages/mine/mine",
          title: "我的",
        },
      ],
    };
  },
  methods: {
    changeTab(index, name) {
      console.log(index);
      uni.switchTab({
        url: "/" + this.footerBarList[index].pagePath,
      });
    },
  },
};
</script>

<style lang="scss"></style>

效果图：