uniapp自定义底部tabBar

使用场景：在一个非tabbar页面，想要有底部导航效果，故自定义效果，系统原底部导航栏仍在正常使用

效果：

布局：

<template>
<view class="tab-bar" :style="{height: height + 'px'}">
<view v-for="(item, index) in tabBars" :key="index" @click="switchTab(item)"
:style="{color: index === selectIndex ? item.selectedTextColor : item.textColor}">
<view style="display: flex; justify-content: center;">
<image :src="index === selectIndex ? item.selectedIconPath : item.iconPath" style="height: 25px; width: 25px;"></image>
</view>
<view style="margin-top: 2px; font-size: 12px;">
{{item.text}}
</view>
</view>
</view>
</template>

<script>
export default {
name:"tabBar",
props: {
tabBars: {
type: Array,
required: true
},
selectIndex: {
type: Number,
default: 0
}
},
data() {
return {
height: undefined
};
},
methods: {
switchTab(item) {
if (this.getCurrentPageIndex() !== item.pagePath) {
uni.redirectTo({
url: item.pagePath
});
}
},
getCurrentPageIndex() {
const pages = getCurrentPages();
return pages[pages.length - 1].route;
}
},
mounted() {
let systemInfo = uni.getSystemInfoSync();
let tabBarHeight = systemInfo.screenHeight - systemInfo.windowHeight - systemInfo.statusBarHeight;
this.height = tabBarHeight
}
}
</script>

<style>
.tab-bar {
  display: flex;
  justify-content: space-around;
  position: fixed;
  height: 5vh;
  bottom: 0;
  width: 100%;
  background-color: #fbfcfe;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
  padding-top: 3px;
  padding-bottom: 2px;
}
</style>

使用：

<tabBar :tab-bars="approvalTabbar" :selectIndex="1"></tabBar>
// selectIndex 是当前页面的数组下标
approvalTabbar = [
{
iconPath: '/static/icon/mess.png',
selectedIconPath:'/static/icon/mess-selected.png',
text: "发起申请",
pagePath:'/pages/approval/launch/launch',
textColor: tabTextColor,
selectedTextColor: tabSelectedTextColor
},
{
iconPath: '/static/icon/approval-mine.png',
selectedIconPath:'/static/icon/approval-mine-selected.png',
text: "我审批的",
pagePath:'/pages/approval/accraditation/accraditation',
textColor: tabTextColor,
selectedTextColor: tabSelectedTextColor
},
{
iconPath: '/static/icon/submit.png',
selectedIconPath:'/static/icon/submit-selected.png',
text: "已提交",
pagePath:'/pages/approval/submit/submit',
textColor: tabTextColor,
selectedTextColor: tabSelectedTextColor
}
]

不足之处：

1.需要在参与跳转的每个页面引入组件

2.引入时需要传递相同的tabs数组数据、页面与数组对应的下标

3.页面跳转后会重绘底部导航栏，出现闪的问题

原文地址：https://blog.csdn.net/qq_53024519/article/details/142552142

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