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uniapp开发小程序-实现中间凸起的 tabbar

7月前 作者：小跳不会Coding 分类：Toy博客 阅读(24) 违法举报

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一、效果展示：

uniapp开发小程序-实现中间凸起的 tabbar,uniapp,uni-app,小程序,windows文章来源地址https://www.toymoban.com/news/detail-622006.html

二、代码实现：

1.首先在pages.json文件中进行tabbar的样式和列表配置，代码如下：
{
	"pages": [ //pages数组中第一项表示应用启动页，参考：https://uniapp.dcloud.io/collocation/pages
		{
			"path": "pages/index/index",
			"style": {
				"navigationBarTitleText": "uni-app"
			}
		},
		{
			"path": "pages/todo/todo",
			"style": {
				"navigationBarTitleText": "uni-app"
			}
		},{
			"path": "pages/workBench/workBench",
			"style": {
				"navigationBarTitleText": "uni-app"
			}
		},{
			"path": "pages/contacts/contacts",
			"style": {
				"navigationBarTitleText": "uni-app"
			}
		},{
			"path": "pages/my/my",
			"style": {
				"navigationBarTitleText": "uni-app"
			}
		}
		
	],
	"tabBar": {
		"color": "#B6C3D2",
		"selectedColor": "#2B2E3D",
		"borderStyle": "black",
		"backgroundColor": "#FFFFFF",
		"list": [{
				"pagePath": "pages/index/index",
				"iconPath": "static/index01.png",
				"selectedIconPath": "static/index02.png",
				"text": "首页"
			},
			{
				"pagePath": "pages/todo/todo",
				"iconPath": "static/dd01.png",
				"selectedIconPath": "static/dd02.png",
				"text": "订单1"
			},
			{
				"pagePath": "pages/workBench/workBench",
				"iconPath": "static/shop01.png",
				"selectedIconPath": "static/shop02.png",
				"text": "店铺"
			},
			{
				"pagePath": "pages/contacts/contacts",
				"iconPath": "static/dd01.png",
				"selectedIconPath": "static/dd02.png",
				"text": "订单2"
			},
			{
				"pagePath": "pages/my/my",
				"iconPath": "static/my01.png",
				"selectedIconPath": "static/my02.png",
				"text": "我的"
			}
		]

	},

	"globalStyle": {
		"navigationBarTextStyle": "black",
		"navigationBarTitleText": "uni-app",
		"navigationBarBackgroundColor": "#F8F8F8",
		"backgroundColor": "#F8F8F8"
	},
	"uniIdRouter": {}
}
2.在components文件中封装一个Tabbar 组件，命名为TabBar.vue 代码如下：
<template>
	<view class="tabbar-container">
		<block>
			<view class="tabbar-item" v-for="(item,index) in tabbarList"
				:class="[item.centerItem ? ' center-item' : '']" @click="changeItem(item)">
				<view class="item-top">
					<image :src="currentItem==item.id?item.selectIcon:item.icon"></image>
				</view>
				<view class="item-bottom" :class="[currentItem==item.id ? 'item-active' : '']">
					<text>{{item.text}}</text>
				</view>
			</view>
		</block>

	</view>
</template>

<script>
	export default {
		props: {
			currentPage: {
				type: Number,
				default: 0
			}
		},
		data() {
			return {
				currentItem: 0,
				tabbarList: [{
					id: 0,
					path: "/pages/index/index",
					icon: "/static/index01.png",
					selectIcon: "/static/index02.png",
					text: "首页",
					centerItem: false
				}, {
					id: 1,
					path: "/pages/todo/todo",
					icon: "/static/dd01.png",
					selectIcon: "/static/dd02.png",
					text: "订单1",
					centerItem: false
				}, {
					id: 2,
					path: "/pages/workBench/workBench",
					icon: "/static/shop01.png",
					selectIcon: "/static/shop02.png",
					text: "店铺",
					centerItem: true
				}, {
					id: 3,
					path: "/pages/contacts/contacts",
					icon: "/static/dd01.png",
					selectIcon: "/static/dd02.png",
					text: "订单2",
					centerItem: false
				}, {
					id: 4,
					path: "/pages/mine/mine",
					icon: "/static/my01.png",
					selectIcon: "/static/my02.png",
					text: "我的",
					centerItem: false
				}]

			};
		},
		mounted() {
			this.currentItem = this.currentPage;
			uni.hideTabBar();
		},
		methods: {
			changeItem(item) {
				let _this = this;
				//_this.currentItem = item.id;  
				uni.switchTab({
					url: item.path
				});
				console.log(item.path)
			}
		}
	}
</script>
<style>
	view {
		padding: 0;
		margin: 0;
		box-sizing: border-box;
	}

	.tabbar-container {
		position: fixed;
		bottom: 0;
		left: 0;
		width: 100%;
		height: 110rpx;
		/* box-shadow: 0 0 5px #999;  */
		box-shadow: 0px 3px 20px rgba(0, 0, 0, 0.16);
		border-top: 1px;
		display: flex;
		align-items: center;
		padding: 5rpx 0;
		color: #999999;
		z-index: 200;
		background-color: #fff;
	}

	.tabbar-container .tabbar-item {
		width: 20%;
		height: 100rpx;
		display: flex;
		flex-direction: column;
		justify-content: center;
		align-items: center;
		text-align: center;
	}

	.tabbar-container .item-active {
		color: #1AD080;
	}

	.tabbar-container .center-item {
		display: block;
		position: relative;
	}

	.tabbar-container .tabbar-item .item-top {
		width: 54rpx;
		height: 54rpx;
		padding: 0rpx;
	}

	.tabbar-container .center-item .item-top {
		flex-shrink: 0;
		width: 100rpx;
		height: 100rpx;
		position: absolute;
		top: -50rpx;
		left: calc(50% - 50rpx);
		border-radius: 50%;
		box-shadow: 0px 3px 20px rgba(0, 0, 0, 0.16);
		/* box-shadow: 0 0 5px #999;  */
		background-color: #ffffff;
		padding: 10rpx;
	}

	.tabbar-container .tabbar-item .item-top image {
		width: 100%;
		height: 100%;
	}

	tabbar-container .tabbar-item:nth-child(3) .item-top image {
		background: #ff0000;
	}

	.tabbar-container .tabbar-item .item-bottom {
		font-size: 28rpx;
		width: 100%;
	}

	.tabbar-container .center-item .item-bottom {
		position: absolute;
		bottom: 5rpx;
	}
</style>
3.在mian.js 全局注册组件
import TabBar from "./components/TabBar.vue"
Vue.component('TabBar', TabBar);
4.在页面中使用组件
<TabBar :current-page="0" />

完成~

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