uniapp自定义头部导航栏布局（优化版）

H5与微信小程序效果图

普通版

//utils/system.js

	//获取系统信息
	const systemInfo = uni.getSystemInfoSync();
	//获取状态栏的高度，H5状态栏的高度默认是0
	export const getStatusBarHeight=()=>systemInfo.statusBarHeight || 0;
	//获取标题栏高度
	export const getTitleBarHeight =()=>{
		// 再次获取状态栏的高度
		 const statusBarHeight = getStatusBarHeight();
		//判断是否有胶囊按钮
		if(uni.getMenuButtonBoundingClientRect){
			let {top,height}=uni.getMenuButtonBoundingClientRect()
			return (top-statusBarHeight)*2 + height
		}else{
			return 40;
		}
	}
	
	//填充区域
	export const getNavBarHeight =()=>getStatusBarHeight() + getTitleBarHeight()

<template>
	<view class="customNavBar">
		<view class="navbar">
			<!-- 状态栏 -->
			<view class="statusBar" :style="{height:getStatusBarHeight() + 'px'}"> </view>
			<!-- 标题栏 -->
			<view class="titleBar" :style="{height:getTitleBarHeight() + 'px'}">
				<view class="title">标题</view>
				<view class="search">
					<uni-icons type="search" color="#888" size="18" class="icon"></uni-icons>
					<text class="text">搜索</text>
				</view>
			</view>
		</view>
		<!-- 填充区域 -->
		<view class="fill"  :style="{height:getNavBarHeight()+ 'px'}">
			
		</view>
	</view>
</template>

<script setup>
	import { ref } from 'vue';
	import { onShow } from "@dcloudio/uni-app";
// 引入自定义头部导航栏相关信息
	import {getStatusBarHeight,getTitleBarHeight,getNavBarHeight} from "@/utils/system.js"
</script>

<style lang="scss" scoped>
.customNavBar{
	.navbar{
		position: fixed;
		top:0;
		left: 0;
		width: 100%;
		z-index: 20;
		background:
		linear-gradient(to bottom,rgba(0,0,0,0),#fff 400rpx),
		linear-gradient(to right, #beecd8 20%,#F4E2d8);
		.statusBar{}
		.titleBar{
			display: flex;
			padding-left: 30rpx;
			align-items: center;
			.title{
				font-size: 22px;
				font-weight: 600;
				color: $text-font-color-1;
			}
		}
		.search{
			  width: 220rpx;
			 height: 50rpx;
			 border-radius: 60rpx;
			 background: rgba(255,255,255,0.4);
			 border:1px solid #fff;
			 margin-left:30rpx;
			 color:#999;
			font-size: 28rpx;
			display: flex;
			align-items: center;
			 .icon{
					  margin-left:5rpx;
				  }
				  .text{
					  padding-left:10rpx;
				  }
		}
	}
}
</style>