uniapp自定义底部导航栏

1.新建 nav-custom.vue组件

<template><view class="nav-box" :style="{'height':height+'px','background':bgColor}"><!-- 自定义导航栏 --><view class="status_bar" :style="{'height':statusBarHeight+'px'}"><!-- uni-ui这里是状态栏 --></view><!-- 胶囊位置信息 --><view class="nav-main flex align-center justify-center" :style="{height: navBarHeight+'px'}"><slot name='right-icon'></slot><view class="nav-main-back" @click="back" v-if="backIcon"><uni-icons type="back" size="26" color="#fff"></uni-icons></view><text class="nav-main-title"  :style="{color: titleColor}">{{title}}</text></view></view>
</template><script>export default {props: {bgColor: {type: String,default: "#F5CFA8"},backIcon: {type: Boolean,default: true},title: {type: String,default: "赴日通"},titleColor: {type: String,default: "#fff"}},data() {return {//总高度height: 0,//胶囊位置信息menuButtonRect: {},//状态栏的高度statusBarHeight: 0,//导航栏的高度navBarHeight: 0}},created() {// this.height = wx.getStorageSync('navBarHeight')this.getHeight();},methods: {//获取屏幕导航栏高度getHeight() {if (wx.canIUse('getMenuButtonBoundingClientRect')) {let sysInfo = wx.getSystemInfoSync(); //状态栏的高度this.statusBarHeight = sysInfo.statusBarHeight;// 胶囊位置信息let rect = wx.getMenuButtonBoundingClientRect();this.menuButtonRect = JSON.parse(JSON.stringify(rect));// 导航栏高度let navBarHeight = (rect.top - sysInfo.statusBarHeight) * 2 + rect.height;this.navBarHeight = navBarHeight;// 自定义导航栏的高度this.height = sysInfo.statusBarHeight + navBarHeight;} else {wx.showToast({title: '您的微信版本过低，界面可能会显示不正常',icon: 'none',duration: 4000});}},//返回back() {uni.navigateBack({delta: 1})},}}
</script><style lang="scss" scoped>.status_bar {// height: var(--status-bar-height);width: 100%;// background:#ff0;}.nav-main {position: relative;// background:#f00;.nav-main-back {position: absolute;left: 10rpx;}.nav-main-title {color: #fff;font-size: 28rpx;}}
</style>