开发笔记:uniapp添加自定义底部导航栏，实现根据权限动态切换底部栏目的功能

<template>
<view class="uni-tabbar">
<view class="uni-tabbar__item" v-for="(item,index) in tabbar" :key="index" @tap="changeTab(item)">
<view class="icon" :class="[item.fontIcon , item.pagePath == pagePath?\'uni-active\':\'\']">view>

<view v-if="false" class="uni-tabbar__bd">
<view class="uni-tabbar__icon">
<image v-if="item.pagePath == pagePath" class="uni-w-42 uni-h-42" mode="aspectFit" :src="item.selectedIconPath">image>
<image v-else class="uni-w-42 uni-h-42" mode="aspectFit" :src="item.iconPath">image>
view>
view>
<view class="uni-tabbar__label" :class="{\'active\': item.pagePath == pagePath}">
{{item.text}}
view>
view>
view>
template>
<script>
export default {
props: {
pagePath: null
},
data() {
return {
page: \'contact\',
showPage: false,
containerHeight: 400,
tabbar: [
{
"pagePath": "/pages/tabBar/home/home",
"iconPath": "/static/tabBar/home.png",
"selectedIconPath": "/static/tabBar/home_col.png",
"text": "首页",
"fontIcon": "icon-shouye"
},
　　　　　　　　　　　　// 这里是要动态切换的栏目，先隐藏，动态追加
// {
// "pagePath": "/pages/tabBar/manage/manage",
// "iconPath": "/static/tabBar/home.png",
// "selectedIconPath": "/static/tabBar/home_col.png",
// "text": "管理",
// "fontIcon": "icon-guanli"
// },
{
"pagePath": "/pages/tabBar/person/person",
"iconPath": "/static/tabBar/person.png",
"selectedIconPath": "/static/tabBar/person_col.png",
"text": "我的",
"fontIcon": "icon-wode"
}
]
};
},
mounted() {
// true为判断条件，根据实际的需求替换即可
if(true) {
this.tabbar.splice(1,0,
{
"pagePath": "/pages/tabBar/manage/manage",
"iconPath": "/static/tabBar/home.png",
"selectedIconPath": "/static/tabBar/home_col.png",
"text": "管理",
"fontIcon": "icon-guanli"
}
)
}
},
methods: {
changeTab(item) {
this.page = item.pagePath;
　　　　　　　　　　// 这里使用reLaunch关闭所有的页面，打开新的栏目页面
uni.reLaunch({
url: this.page
});
},
}
}
script>
<style lang="scss" scoped>

[nvue] uni-scroll-view, [nvue] uni-swiper-item, [nvue] uni-view {
flex-direction: unset;
}
[nvue-dir-column] uni-swiper-item, [nvue-dir-column] uni-view {
flex-direction: unset;
}
.uni-tabbar {
position: fixed;
bottom: 0;
z-index: 999;
width: 100%;
display: flex;
justify-content: space-around;
height: 98upx;
padding: 16upx 0;
box-sizing: border-box;
border-top: solid 1upx #ccc;
background-color: #fff;
box-shadow: 0px 0px 17upx 1upx rgba(206, 206, 206, 0.32);
.uni-tabbar__item {
display: block;
line-height: 24upx;
font-size: 20upx;
text-align: center;
}
.uni-tabbar__icon {
height: 42upx;
line-height: 42upx;
text-align: center;
}
.icon {
display: inline-block;
}
.uni-tabbar__label {
line-height: 24upx;
font-size: 24upx;
color: #999;
&.active {
color: #1ca6ec;
}
}
}
style>