uniapp自定义导航栏，高度，自定义组件

设置自定义导航栏 ：globalStyle 内 navigationStyle": "custom"

配置页面：pages.json

"globalStyle": {
		"mp-alipay": {
			/* 支付宝小程序特有相关 */
			"transparentTitle": "always",
			"allowsBounceVertical": "NO"
		},
		"navigationBarBackgroundColor": "#0081ff",
		"navigationBarTitleText": "JEECG BOOT",
		"navigationStyle": "custom",//自定义导航栏
		"navigationBarTextStyle": "white"
	},

自定义导航栏组件
组件名：cu-custom.vue

<template>
	<view>
		<view class="cu-custom" :style="[{height:CustomBar + 'px'}]">
			<view class="cu-bar fixed" :style="style" :class="[bgImage!=''?'none-bg text-white bg-img':'',bgColor]">
				<view class="action" @tap="BackPage" v-if="isBack">
					<text class="cuIcon-back">text>
					<slot name="backText">slot>
				view>
				<view class="content" :style="[{top:StatusBar + 'px'}]">
					<slot name="content">slot>
				view>
				<view class="action">
					<slot name="right">slot>
				view>
			view>
		view>
	view>
template>

<script>
	export default {
		data() {
			return {
				StatusBar: this.StatusBar,
				CustomBar: this.CustomBar
			};
		},
		name: 'cu-custom',
		computed: {
			style() {
				var StatusBar= this.StatusBar;
				var CustomBar= this.CustomBar;
				var bgImage = this.bgImage;
				var style = `height:${CustomBar}px;padding-top:${StatusBar}px;`;
				if (this.bgImage) {
					style = `${style}background-image:url(${bgImage});`;
				}
				return style
			}
		},
		props: {
			bgColor: {
				type: String,
				default: ''
			},
			isBack: {
				type: [Boolean, String],
				default: false
			},
			bgImage: {
				type: String,
				default: ''
			},
		},
		methods: {
			BackPage() {
				uni.navigateBack({
					delta: 1
				});
			}
		}
	}
</script>

设置导航栏高度自适应
修改页面:App.vue

<script>
	import Vue from 'vue'
	import appUpdate from 'common/util/appUpdate.js'
	export default {
		onLaunch: function() {
			uni.getSystemInfo({
				success: function(e) {
					
					// #ifdef APP-PLUS
					// 检测升级
					appUpdate()
					// #endif
					// #ifndef MP
					Vue.prototype.StatusBar = e.statusBarHeight;
					if (e.platform == 'android') {
						Vue.prototype.CustomBar = e.statusBarHeight + 50;
					} else {
						Vue.prototype.CustomBar = e.statusBarHeight + 45;
					};
					// #endif

					// #ifdef MP-WEIXIN
					Vue.prototype.StatusBar = e.statusBarHeight;
					let custom = wx.getMenuButtonBoundingClientRect();
					Vue.prototype.Custom = custom;
					Vue.prototype.CustomBar = custom.bottom + custom.top - e.statusBarHeight;
					// #endif		

					// #ifdef MP-ALIPAY
					Vue.prototype.StatusBar = e.statusBarHeight;
					Vue.prototype.CustomBar = e.statusBarHeight + e.titleBarHeight;
					// #endif
					
					
				}
			})
            Vue.prototype.NavBarColor='bg-gradual-blue'
            Vue.prototype.Radio_Check_Size='scale(0.7)'
			Vue.prototype.ColorList = [{
					title: '嫣红',
					name: 'red',
					color: '#e54d42'
				},
				{
					title: '桔橙',
					name: 'orange',
					color: '#f37b1d'
				},
				{
					title: '明黄',
					name: 'yellow',
					color: '#fbbd08'
				},
				{
					title: '橄榄',
					name: 'olive',
					color: '#8dc63f'
				},
				{
					title: '森绿',
					name: 'green',
					color: '#39b54a'
				},
				{
					title: '天青',
					name: 'cyan',
					color: '#1cbbb4'
				},
				{
					title: '海蓝',
					name: 'blue',
					color: '#0081ff'
				},
				{
					title: '姹紫',
					name: 'purple',
					color: '#6739b6'
				},
				{
					title: '木槿',
					name: 'mauve',
					color: '#9c26b0'
				},
				{
					title: '桃粉',
					name: 'pink',
					color: '#e03997'
				},
				{
					title: '棕褐',
					name: 'brown',
					color: '#a5673f'
				},
				{
					title: '玄灰',
					name: 'grey',
					color: '#8799a3'
				},
				{
					title: '草灰',
					name: 'gray',
					color: '#aaaaaa'
				},
				{
					title: '墨黑',
					name: 'black',
					color: '#333333'
				},
				{
					title: '雅白',
					name: 'white',
					color: '#ffffff'
				},
			]

		},
		onShow: function() {
			console.log('App Show')
		},
		onHide: function() {
			console.log('App Hide')
		}

	}
</script>

引用自定义组件

<template>
	<view>
		<cu-custom :bgColor="NavBarColor" :isBack="true" backRouterName="index">
			<block slot="backText">返回</block>
			<block slot="content">通讯录</block>
		</cu-custom>
	</view>
</template>