uniapp实现自定义tabbar导航点击跳转

首先先在pages.josn中把需要tabBar设置好：只需要将页面路径放进去就可以

"tabBar": {
        "selectedColor":"#79D5AD",
        "color": "#999999",
        "backgroundColor":"#ffffff",
        "borderStyle": "white",
        "height":"0px",
        "list": [{
            "pagePath":"pages/activity/activity",
            "text": " "
        },{
            "pagePath":"pages/recommendation/recommendation",
            "text": " "
        },{
            "pagePath":"pages/message/message",
            "text": " "
        },{
            "pagePath":"pages/user/user",
            "text": " "
        }]
}

下面就是tabBar组件：这样就可以使用uni.switchTab({})路由切换tabBar页面，:style="{‘padding-bottom’: paddingBottomHeight + ‘rpx’}"是给iphone X以上的手机tabBar适配了一个padding-bottom；

<template>
    <cover-view class="tabbar" :style="{'padding-bottom': paddingBottomHeight + 'rpx'}">
        <cover-view class="tabbar-item"
            v-for="(item, index) in list" 
            :key="index" 
            @click="tabbarChange(item.path)"
        >
			<block v-if="index == 2">
				<cover-image class="item-img item-img2" :src="item.icon_a" v-if="current == index"></cover-image>
				<cover-image class="item-img item-img2" :src="item.icon" v-else></cover-image>
			</block>
			<block v-else>
				<cover-image class="item-img" :src="item.icon_a" v-if="current == index"></cover-image>
				<cover-image class="item-img" :src="item.icon" v-else></cover-image>
			</block>
            <cover-view class="item-name" :class="{'tabbarActive': current == index}" v-if="item.text">{{item.text}}</cover-view>
			
        </cover-view>
    </cover-view>
</template>

<script>
export default {
    props: {
        current: String
    },
    data() {
        return {
            paddingBottomHeight: 0,  //苹果X以上手机底部适配高度
            list: [{
                    text: '首页',  
                    icon: '/static/foot-1-d.png',  //未选中图标
                    icon_a: '/static/foot-1-a.png',  //选中图片
                    path: "/pages/index/index",  //页面路
                },{
                    text: '社区',
                    icon: '/static/foot-2-d.png',
                    icon_a: '/static/foot-2-a.png',
                    path: "/pages/community/index",
                }
                ,{
                    text: '',
                    icon: '/static/foot-3.png',
                    icon_a: '/static/foot-3.png',
                    path: '/pages/publish/index',
                },{
                    text: '聊生意',
                    icon: '/static/foot-4-d.png',
                    icon_a: '/static/foot-4-a.png',
                    path: "/pages/consult/index",
                },{
                    text: '我的',
                    icon: '/static/foot-5-d.png',
                    icon_a: '/static/foot-5-a.png',
                    path: "/pages/my/index",
                },
            ]
        };
    },
    created() {
        let that = this;
        uni.getSystemInfo({
            success: function (res) {
                let model = ['X', 'XR', 'XS', '11', '12', '13', '14', '15'];
                model.forEach(item => {
                    //适配iphoneX以上的底部，给tabbar一定高度的padding-bottom
                    if(res.model.indexOf(item) != -1 && res.model.indexOf('iPhone') != -1) {
                        that.paddingBottomHeight = 40;
                    }
                })
            }
        });
    },
    watch: {
        
    },
    methods: {
        tabbarChange(path) {
            // this.$pageTo.toTab(path);
            uni.switchTab({
                url: path
            })
        }
    }
};
</script>

<style lang="scss" scoped>
    .tabbarActive{
        color: #79D5AD !important;
    }
    .tabbar{
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        width: 100%;
        height: 100rpx;
        background-color: #ffffff;
        display: flex;
        justify-content: space-around;
        align-items: center;
        .tabbar-item{
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            height: 100rpx;
            .item-img{
                width: 46rpx;
                height: 46rpx;
                margin-bottom: 4rpx;
            }
			.item-img2{
				width: 66rpx;
				height: 66rpx;
			}
            .item-name{
                font-size: 26rpx;
                color: #A3A3A3;
            }
        }
    }
</style>

下面使用tabBar页面引入自定义tabBar组件：记得加上uni.hideTabBar({})把官方tabBar隐藏

<template>
    <view>
        <view-tabbar :current="0"></view-tabbar>
    </view>
</template>

<script>
    import Tabbar from '@/components/tabbar.vue'
    export default {
        components: {
            'view-tabbar': Tabbar
        }, 
        onShow() {
            uni.hideTabBar({
                animation: false
            })
        },
    }
</script>

作者：xxxxxxxikaI
链接：https://www.jianshu.com/p/491d9ceac9e8
来源：简书