uni-app瀑布流效果实现方法
作者：青田。
Uni-app是一个基于Vue.js开发跨平台应用的框架,它可以将代码编译成多个平台下的原生应用,这篇文章主要给大家介绍了关于uni-app瀑布流效果的相关资料,需要的朋友可以参考下
效果图
一、组件
components/u-myWaterfall.vue
<template>
<view class="u-waterfall">
<view id="u-left-column" class="u-column"><slot name="left" :leftList="leftList"></slot></view>
<view id="u-right-column" class="u-column"><slot name="right" :rightList="rightList"></slot></view>
</view>
</template>
<script>
export default {
props: {
value: {
// 瀑布流数据
type: Array,
required: true,
default: function() {
return [];
}
},
// 每次向结构插入数据的时间间隔，间隔越长，越能保证两列高度相近，但是对用户体验越不好
// 单位ms
addTime: {
type: [Number, String],
default: 200
},
// id值，用于清除某一条数据时，根据此idKey名称找到并移除，如数据为{idx: 22, name: 'lisa'}
// 那么该把idKey设置为idx
idKey: {
type: String,
default: 'id'
}
},
data() {
return {
leftList: [],
rightList: [],
tempList: [],
}
},
watch: {
copyFlowList(nVal, oVal) {
// 取差值，即这一次数组变化新增的部分
let startIndex = Array.isArray(oVal) && oVal.length > 0 ? oVal.length : 0;
// 拼接上原有数据
this.tempList = this.tempList.concat(this.cloneData(nVal.slice(startIndex)));
this.splitData();
}
},
mounted() {
this.tempList = this.cloneData(this.copyFlowList);
this.splitData();
},
computed: {
// 破坏flowList变量的引用，否则watch的结果新旧值是一样的
copyFlowList() {
return this.cloneData(this.value);
}
},
methods: {
async splitData() {
if (!this.tempList.length) return;
let leftRect = await this.$uGetRect('#u-left-column');
let rightRect = await this.$uGetRect('#u-right-column');
// 如果左边小于或等于右边，就添加到左边，否则添加到右边
let item = this.tempList[0];
// 解决多次快速上拉后，可能数据会乱的问题，因为经过上面的两个await节点查询阻塞一定时间，加上后面的定时器干扰
// 数组可能变成[]，导致此item值可能为undefined
if(!item) return ;
if (leftRect.height < rightRect.height) {
this.leftList.push(item);
} else if (leftRect.height > rightRect.height) {
this.rightList.push(item);
} else {
// 这里是为了保证第一和第二张添加时，左右都能有内容
// 因为添加第一张，实际队列的高度可能还是0，这时需要根据队列元素长度判断下一个该放哪边
if (this.leftList.length <= this.rightList.length) {
this.leftList.push(item);
} else {
this.rightList.push(item);
}
}
// 移除临时列表的第一项
this.tempList.splice(0, 1);
// 如果临时数组还有数据，继续循环
if (this.tempList.length) {
setTimeout(() => {
this.splitData();
}, this.addTime)
}
},
// 复制而不是引用对象和数组
cloneData(data) {
return JSON.parse(JSON.stringify(data));
}
}
}
</script>
<style lang="scss" scoped>
.u-waterfall {
display: flex;
flex-direction: row;
align-items: flex-start;
}
.u-column {
display: flex;
flex: 1;
flex-direction: column;
height: auto;
}
.u-image {
width: 100%;
}
</style>
二、商品的组件
<template>
<view>
<view class="waterfall-box" v-for="(item, index) in list" :key="index">
<u-image :src="item.image" :lazy-load="true" radius="10" width="160" height="160"></u-image>
<view class="box-item-title">
{{item.title}}
</view>
<view class="box-item-price">
{{item.price}}元
</view>
<view class="box-item-tag">
<view class="tag-owner">
自营
</view>
<view class="tag-text">
放心购
</view>
</view>
<view class="box-comment">
{{item.shop}}
</view>
</view>
</view>
</template>
<script>
export default {
name:"MyGoodsDemo",
props:{
list:{
type:Array,
default:[]
}
},
data() {
return {
};
}
}
</script>
<style lang="scss">
.waterfall-box {
border-radius: 16rpx;
margin: 10rpx;
background-color: #ffffff;
padding: 16rpx;
position: relative;
.box-item-title{
width: 320rpx;
font-size: 26rpx;
margin-top: 10rpx;
color: #434343;
text-overflow: -o-ellipsis-lastline;
overflow: hidden;
text-overflow: ellipsis;
display: -webkit-box;
-webkit-line-clamp: 2;
line-clamp: 2;
-webkit-box-orient: vertical;
}
.box-item-price{
font-size: 30rpx;
color:#ff4142;
margin-top: 10rpx;
}
.box-item-tag{
display: flex;
margin-top: 10rpx;
.tag-owner{
background-color:#FF4142;
color: #FFFFFF;
display: flex;
align-items: center;
padding: 4rpx 14rpx;
border-radius: 50rpx;
font-size: 16rpx;
line-height: 1;
}
.tag-text {
border: 1px solid #FF4142;
color: #FF4142;
margin-left: 20rpx;
border-radius: 50rpx;
line-height: 1;
padding: 4rpx 14rpx;
display: flex;
align-items: center;
font-size: 20rpx;
}
}
.box-comment{
font-size: 22rpx;
color: $u-tips-color;
margin-top: 5px;
}
}
</style>
三、页面的使用
<template>
<view class="my-waterfall">
<myWaterfall v-model="flowList">
<template v-slot:left="{leftList}">
<MyGoodsDemo :list="leftList"></MyGoodsDemo>
</template>
<template v-slot:right="{rightList}">
<MyGoodsDemo :list="rightList"></MyGoodsDemo>
</template>
</myWaterfall>
<!-- 加载更多 -->
<u-loadmore bg-color="rgb(240, 240, 240)" :status="loadStatus" @loadmore="addRandomData"></u-loadmore>
</view>
</template>
<script>
import myWaterfall from '@/components/u-myWaterfall.vue'
import MyGoodsDemo from '@/components/MyGoodsDemo.vue'
export default {
components:{
myWaterfall,
MyGoodsDemo
},
data() {
return {
loadStatus: 'loadmore',
flowList: [],
list: [
{
price: 35,
title: 'CINESSD 小白男鞋2022新款冬季运动休闲板鞋男士皮面防水低帮百 白兰 39',
shop: '500+条评论',
image: 'https://img14.360buyimg.com/mobilecms/s360x360_jfs/t1/43390/15/19929/131606/6370b921Eefed6acc/8e9780a1736357e6.jpg!q70.dpg.webp',
},
{
price: 75,
title: '海天 调味组合酱油蚝油料酒金标生抽*2+蚝油+古道料酒省心礼盒锦鲤派',
shop: '500+条评论',
image: 'https://img14.360buyimg.com/mobilecms/s360x360_jfs/t1/208109/6/29643/155027/63ec3d92F817bd559/90a96c4dd880e40f.jpg!q70.dpg.webp',
},
{
price: 385,
title: '闪魔 苹果14手机壳 iphone14ProMax气囊防摔超薄保护套镜头全包透明软壳 苹果14Pro【十米防摔^透出裸机】全透明',
shop: '500+条评论',
image: 'https://img14.360buyimg.com/mobilecms/s360x360_jfs/t1/5972/32/17361/80842/626deb75E66225786/e7f1ff06504a1cca.jpg!q70.dpg.webp',
},
{
price: 784,
title: '小米Redmi Buds3青春版 真无线蓝牙耳机 入耳式耳机 蓝牙耳机 小米无线耳机 蓝牙5.2 苹果华为手机通用',
shop: '500+条评论',
image: 'https://img14.360buyimg.com/mobilecms/s360x360_jfs/t1/97453/11/35123/120822/63eb4ec8F554a9a71/5c0332fa1b04d502.jpg!q70.dpg.webp',
},
{
price: 7891,
title: '海尔（Haier）大容量囤货海尔（Haier）冰箱京东小家双开门冰箱532升电冰箱一级变频大超薄家用冰箱风冷无霜 BCD-532WGHSS8EL9U1',
shop: '500+条评论',
image: 'https://img14.360buyimg.com/mobilecms/s360x360_jfs/t1/97453/11/35123/120822/63eb4ec8F554a9a71/5c0332fa1b04d502.jpg!q70.dpg.webp',
},
{
price: 2341,
title: '卫龙魔芋爽辣条休闲零食香辣素毛肚180g/袋约12小包即食小零食',
shop: '500+条评论',
image: 'https://img14.360buyimg.com/mobilecms/s360x360_jfs/t1/97453/11/35123/120822/63eb4ec8F554a9a71/5c0332fa1b04d502.jpg!q70.dpg.webp',
},
{
price: 661,
shop: '500+条评论',
title: '卫龙魔芋爽辣条休闲零食香辣素毛肚180g/袋约12小包即食小零食',
image: 'https://img13.360buyimg.com/n2/s370x370_jfs/t1/51330/4/17889/64744/63ca2564F4cfd8ce3/a9ed18603e2855f8.jpg!q70.jpg.webp',
},
{
price: 1654,
title: '鞋子鞋子鞋子',
shop: '500+条评论',
image: 'https://img10.360buyimg.com/n2/s370x370_jfs/t1/195846/4/32797/40099/63e348fbF14993564/472de8ed0c40f206.jpg!q70.jpg',
},
{
price: 1678,
title: '优资莱（UZERO） 优资莱绿茶保湿礼盒洁面乳爽肤水乳液精华套装补水护肤品女 八件套礼盒',
shop: '500+条评论',
image: 'https://img14.360buyimg.com/mobilecms/s360x360_jfs/t1/200469/24/30778/90107/63989b02E6f47594f/cb91265ba594e7cb.jpg!q70.dpg.webp',
},
{
price: 924,
title: '兰蔻小黑瓶50ml 修护保湿',
shop: '500+条评论',
image: 'https://img14.360buyimg.com/mobilecms/s360x360_jfs/t1/160110/20/21070/176153/63eb2b42F599b4cb6/f466a798d5f63d83.jpg!q70.dpg.webp',
},
{
price: 8243,
title: '至本特安修护套装 2件套（肌底液+乳液）',
shop: '500+条评论',
image: 'https://img14.360buyimg.com/mobilecms/s360x360_jfs/t1/54121/6/21408/129268/631593a7E87b6d12a/b3c650bf886c6a5f.jpg!q70.dpg.webp',
},
]
}
},
onLoad() {
this.addRandomData();
},
onReachBottom() {
this.loadStatus = 'loading';
// 模拟数据加载
setTimeout(() => {
this.addRandomData();
this.loadStatus = 'loadmore';
}, 1000)
},
methods: {
addRandomData() {
for(let i = 0; i < 10; i++) {
let index = this.$u.random(0, this.list.length - 1);
// 先转成字符串再转成对象，避免数组对象引用导致数据混乱
let item = JSON.parse(JSON.stringify(this.list[index]))
console.log(item);
item.id = this.$u.guid();
this.flowList.push(item);
}
},
}
}
</script>
<style>
page {
background-color: rgb(240, 240, 240);
}
</style>
<style lang="scss" scoped>
.my-waterfall{
width: 750rpx;
.waterfall-box {
border-radius: 16rpx;
margin: 10rpx;
background-color: #ffffff;
padding: 16rpx;
position: relative;
.box-item-title{
width: 320rpx;
font-size: 26rpx;
margin-top: 10rpx;
color: #434343;
text-overflow: -o-ellipsis-lastline;
overflow: hidden;
text-overflow: ellipsis;
display: -webkit-box;
-webkit-line-clamp: 2;
line-clamp: 2;
-webkit-box-orient: vertical;
}
.box-item-price{
font-size: 30rpx;
color:#ff4142;
margin-top: 10rpx;
}
.box-item-tag{
display: flex;
margin-top: 10rpx;
.tag-owner{
background-color:#FF4142;
color: #FFFFFF;
display: flex;
align-items: center;
padding: 4rpx 14rpx;
border-radius: 50rpx;
font-size: 16rpx;
line-height: 1;
}
.tag-text {
border: 1px solid #FF4142;
color: #FF4142;
margin-left: 20rpx;
border-radius: 50rpx;
line-height: 1;
padding: 4rpx 14rpx;
display: flex;
align-items: center;
font-size: 20rpx;
}
}
.box-comment{
font-size: 22rpx;
color: $u-tips-color;
margin-top: 5px;
}
}
}
</style>总结
到此这篇关于uni-app瀑布流效果实现的文章就介绍到这了,更多相关uni-app瀑布流内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家！