uni-app 自定义 tabbar，具备左右滑动切换功能_unitapp tab左侧选择

// 通过component引用组件
<component :is="item.content"></component>
// 代码如下
<template>
	<view class="cust-tabbar">
		<swiper class="swiper" :current="currentIndex" @change="changeIndex">
			<swiper-item v-for="(item, index) in contentList" :key="index">
				<scroll-view style="height: 100%;" scroll-y>
					<view>{{ item.content }}</view>
				</scroll-view>
			</swiper-item>
		</swiper>
		<view class="bottom-tabbar">
			<view class="tabbar-item" v-for="(item, index) in tabbarList" :key="index"
			:style="{color: currentIndex === index ? 'red' : '#999'}"
			@click="clickItem(index)">
				<image :src="currentIndex === index ? item.selectedIconPath : item.iconPath" />
				<view>{{ item.label }}</view>
			</view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				currentIndex: 0,
				contentList: [
					{
						content: '首页1'
					},
					{
						content: '首页2'
					},
					{
						content: '首页3'
					},
					{
						content: '首页4'
					}
				],
				tabbarList: [
					{
						label: '首页1',
						iconPath: '../static/logo.png',
						selectedIconPath: ''
					},
					{
						label: '首页2',
						iconPath: '../static/logo.png',
						selectedIconPath: ''
					},
					{
						label: '首页3',
						iconPath: '../static/logo.png',
						selectedIconPath: ''
					},
					{
						label: '首页4',
						iconPath: '../static/logo.png',
						selectedIconPath: ''
					}
				]
			}
		},
		methods: {
			clickItem(index) {
				this.currentIndex = index;
			},
			changeIndex(e) {
				this.currentIndex = e.detail.current;
			}
		}
	}
</script>

<style lang="scss" scoped>
	.cust-tabbar {
		width: 100%;
		height: 100%;
		.swiper {
			width: 100%;
			height: 1140rpx;
		}
		.content {
			width: 100%;
			height: 1140rpx;
		}
		.bottom-tabbar {
			position: fixed;
			bottom: 0rpx;
			width: 100%;
			height: 100rpx;
			border-top: 1px solid #dddddd;
			box-shadow: 0 0 1rpx 2rpx #ddd;
			background-color: #fff;
			display: flex;
			justify-content: space-around;
			.tabbar-item {
				text-align: center;
				padding: 10rpx;
				image {
					width: 40rpx;
					max-height: 40rpx;
				}
			}
		}
	}
</style>
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