Vue vant-ui框架实现上拉加载下拉刷新功能
目录
知识点速记
基本用法
下拉刷新
代码实现
1.页面布局
2.样式
3.方法
下拉刷新效果：
List通过loading和finished两个变量控制加载状态，当组件滚动到底部时，会触发load事件并将loading设置成true。此时可以发起异步操作并更新数据，数据更新完毕后，将loading设置成false即可。若数据已全部加载完毕，则直接将finished设置成true即可。
List 组件可以与PullRefresh组件结合使用，实现下拉刷新的效果。
注意事项：
v-model ： 是否处于加载状态，加载过程中不触发load事件
finished： 是否已加载完成，加载完成后不再触发load事件
offset ： 滚动条与底部距离小于 offset 时触发load事件
loading-text加载过程中的提示文字
finished-text加载完成后的提示文字
List有以下三种状态，理解这些状态有助于你正确地使用List组件：
非加载中，loading为false，此时会根据列表滚动位置判断是否触发load事件（列表内容不足一屏幕时，会直接触发）
加载中，loading为true，表示正在发送异步请求，此时不会触发load事件
加载完成，finished为true，此时不会触发load事件
在每次请求完毕后，需要手动将loading设置为false，表示加载结束
事件使用：@load方法
滚动条与底部距离小于 offset 时触发
代码实现 1.页面布局<template>
<div class="myOrder">
<!--公共头部组件-->
<nav-bar-top :titleText="titleName" :arrowTrue="arrowTrue"></nav-bar-top>
<!--主体部分-->
<div class="tabMain" style="margin-top:0">
<div v-if="noData" class="p30 text-center fontSize30">
<van-empty class="custom-image" :image="zwdd"/>
</div>
<van-pull-refresh v-model="isLoading" @refresh="onRefresh" class="content" success-text="刷新成功">
<!-- 加载 -->
<van-list v-if="contractData.length>0" v-model="loading" :finished="finished" :immediate-check="false" finished-text="我也是有底线的"
@load="onLoad" :offset="10">
<van-row class="m30 p30 capaIttem" v-for="item in contractData" :key="item.orderId">
<van-col span="24" class="fontSize30">
<div class="focus-con">
<!-- ellipsis-orderNumber -->
<div class="focus-title">
<span class="color3 van-ellipsis">合同编号：{{item.contractNumber}}</span>
<!-- <span class="color3 van-ellipsis">{{item.outsideContractId?'订单':'合同'}}编号：{{item.contractNumber}}</span> -->
<!-- <img src="../../assets/index/VIPICO.png" class="vipIcon pl20"> -->
</div>
<!-- 发票开具状态(0:待申请,1:待审核,2:审核未通过,3:审核已通过) -->
<div>
<van-tag :text-color="item.status=='0'?'#FF9133':item.status=='1'?'#4972FF':item.status=='2'?'#F1403C':'#00CE80'" class="tagStyle">
{{item.status=="0"?"待申请":item.status=="1"?"待审核":item.status=="2"?"审核未通过":"审核通过"}}
</van-tag>
</div>
</div>
</van-col>
<van-col span="24" class="mt10">
<div class="capa-box">
<div class="focus-title" >
<span class="color3 shipName fontSize32">{{item.userName}}</span>
</div>
</div>
<div class="capa-box">
<div class="color6 flex align-items fontSize24 van-ellipsis ellipsis-content">
<img src="../../assets/img/huo.png" class="huoIcon mr5">
{{item.unlimitedLoading&&item.unlimitedLoading=="1"?"随船装/":""}}
<span class="" v-if="item.cargoWeight">{{item.cargoWeight}}吨/</span>
<span class="van-ellipsis">{{item.cargoName?item.cargoName:""}}</span>
</div>
</div>
</van-col>
<van-col span="24" class="capa-body">
<div class="capa-con fontSize28">
<div class="content-left">
<img src="../../assets/index/zhuang.png" alt="" class=" mr5">
<span>{{item.loadingPort}}</span>
</div>
<img src="../../assets/index/arrows.png" class="capa-jt">
<div class="content-right">
<img src="../../assets/index/xie.png" alt="" class=" mr5">
<span>{{item.arrivePort}}</span>
</div>
</div>
<div class="capa-time mt10">
<div class="capa-time-left">
<div class="time-img">
<img src="../../assets/index/time.png" class="capaImg">
<span class="timeTXT fontSize28 pl10">装货时间</span>
</div>
<div class="timeColor fontSize34 mt10 timeError">
{{item.loadingTime?item.loadingTime:"暂无"}}
</div>
</div>
<div style="height:50px;border-left:1px solid #E1E1E1"></div>
<div class="capa-time-right">
<div class="time-img priceContent">
<img src="../../assets/index/money.png" class="capaImg">
<span class="timeTXT fontSize28 pl10">合同金额</span>
</div>
<div>
<div class="timeColor fontSize34 mt10 floatRight">
<span v-if="item.contractAmount">
{{item.priceType=="0"?item.contractAmount+"元":item.priceType=="1"?item.contractAmount+"元/吨":item.contractAmount+"元"}}
</span>
<span v-else>暂无报价</span>
</div>
</div>
</div>
</div>
</van-col>
<van-col style="width:100%" class="mt20">
<div class="flex flex-end">
<van-button plain type="info" class="borderRaduis" size="small" @click="handleLook(item)">查看合同</van-button>
<van-button v-show="item.status=='2'" plain type="info ml20" class="borderRaduis" size="small" @click="handleFail(item,item.invoiceId)">失败原因</van-button>
<van-button class="ml20 borderRaduis" color="#024ee0" type="info" size="small">{{item.status=='2'?'重新申请':'申请开票'}}</van-button>
</div>
</van-col>
</van-row>
</van-list>
</van-pull-refresh>
</div>
</div>
</template>
2.样式
.myOrder{
height: 100vh;
overflow-y: auto;
}
::v-deep.van-cell {
font-size: 14px;
}
.capaIttem {
box-shadow: 0px 0px 10px 0px rgba(0,0,0,0.06);
border-radius: 24px;
background: #fff;
position: relative;
}
::v-deep.van-cell {
padding: 10px 0;
}
::v-deep.van-cell {
font-size: 40px;
line-height: 40px;
font-size: 30px;
}
::v-deep.van-field__left-icon .van-icon {
font-size: 30px;
}
::v-deep.van-tag {
font-size: 24px;
line-height: 40px;
}
::v-deep.van-button--small {
height: 60px;
font-size: 24px;
}
::v-deep.van-tabs--line .van-tabs__wrap {
height: 88px;
}
::v-deep.van-tab {
font-size: 30px;
}
.searchBtnFixed {
position: fixed;
top: 0;
left: 80px;
height: 92px;
line-height: 92px;
z-index: 1000;
width: 86%;
overflow: hidden;
}
::v-deep.van-search {
position: absolute;
top: -8px;
// padding: 13px;
width: 100%;
}
::v-deep.van-search__content {
background: #eeeeee;
border-radius: 16px;
padding: 5px 10px;
}
.focusSearch ::v-deep.van-icon-clear {
padding-right: 160px;
}
// 搜索
.onSearch {
position: absolute;
right: 50px;
top: 28px;
font-size: 30px;
height: 36px;
line-height: 36px;
border-left: 1px solid #cccccd;
padding-left: 30px;
color: #024ee0;
}
// 新增
.focus-con {
display: flex;
justify-content: space-between;
border-bottom: 1px solid #ebedf0;
padding-bottom: 20px;
}
.capa-title {
border-bottom: 1px solid #ebedf0;
padding-bottom: 20px;
display: flex;
align-items: center;
}
.focus-title {
display: flex;
align-items: center;
justify-content: space-between;
font-weight: 600;
}
.vipIcon {
width: 72px;
height: 34px;
}
.capa-box {
display: flex;
justify-content: space-between;
align-items: center;
padding-bottom: 10px;
}
.capa-body {
background: #f5f8ff;
border-radius: 0.13333rem;
padding: 0.33333rem;
}
.capa-con {
display: flex;
justify-content: space-between;
align-items: center;
font-weight: 600;
}
.content-left,
.content-right {
display: flex;
justify-content: space-between;
align-items: center;
img {
width: 0.5rem;
height: 0.5rem;
}
}
.capa-time {
display: flex;
justify-content: space-between;
align-items: center;
}
.time-img {
display: flex;
align-items: center;
}
.capaImg {
width: 30px;
}
.timeColor {
font-weight: 700;
color: #024ee0;
}
.order-group {
display: flex;
align-items: center;
}
.ellipsis-orderNumber{
span{
display: inline-block;
width: 310px;
}
}
.ellipsis-txt {
display: inline-block;
max-width: 200px;
text-align: start;
}
.shipName {
font-weight: 600;
display: flex;
align-items: center;
}
.orderNameWidth{
max-width: 220px;
}
.ellipsis-content{
width: 400px;
}
.priceContent{
display: flex;
justify-content: flex-end;
}
.floatRight{
float: right;
}
.borderRaduis {
border-radius: 10px;
height: 56px;
.van-button__text {
font-size: 26px;
}
}
.huoIcon{
width: 26px;
height: 26px;
}
.tagStyle{
background-color: #fff !important;
}
.contactTel {
width: 90%;
border-radius: 10px;
}
.popup-header{
height: 100px;
text-align: center;
color:#fff;
background: #024EE0;
line-height: 100px;
}
.contactTel ::v-deep.van-popup__close-icon--top-right{
top:26px !important;
color:#fff !important;
}
.popup-box{
margin:60px 50px 30px;
}
.popup-btn{
width: 100%;
border-radius: 20px;
font-size: 36px;
}
.popupTitle {
box-sizing: border-box;
padding: 35px 0 61px 0;
font-size: 32px;
color: #333333;
font-weight: 500;
}
.imgContent {
display: flex;
align-items: center;
justify-content: space-around;
flex-wrap: wrap;
margin-bottom: 30px;
padding: 0 10px;
li {
width: 125px;
height: 125px;
margin-bottom: 37px;
background-color: black;
margin-right: 25px;
}
li:nth-of-type(4n) {
margin-right: 0;
}
}
3.方法
data数据定义：
data() {
return {
zwdd:require("../../assets/img/zwdd.png"),
titleName: "我要开票",
arrowTrue: true,
page: 1,
pageSize: 10,
isLoading: false,
loading: false,
finished: false,
noData: false,
contractData: [],
timer:null,
};
},
加载更多方法onLoad：
// 加载更多
onLoad() {
this.loading = true;
this.timer = setTimeout(() => {
this.page++;
this.getInvoicingContractListFun();
}, 1000);
},
下拉刷新方法onRefresh：下拉刷新调用接口，并且页数=1
// 刷新
onRefresh() {
this.isLoading = true;
this.page = 1;
if (this.contractData.length == 0) {
this.isLoading = false;
}
this.getInvoicingContractListFun();
},
处理数据列表方法getInvoicingContractListFun:
调用接口，传递相应的参数，获取到数据，去判断处理数据数据的加载，数据合并操作，利用定义的loading、finished、isLoading控制数据上拉数据加载。
// 数据列表方法
getInvoicingContractListFun() {
let params = {
carrierUserId: this.id,
pageNum: this.page,
pageSize: this.pageSize
};
getInvoicingContractList(params)
.then(res => {
if (res.code == 200) {
if (this.contractData.length > 0) {
this.noData = false;
//当请求前有数据时 第n次请求
if (this.loading) {
// 上拉加载
this.contractData = this.contractData.concat(res.data.records); //上拉加载新数据添加到数组中
this.$nextTick(() => {
//在下次 DOM 更新循环结束之后执行延迟回调
this.loading = false; //关闭上拉加载中
});
if (res.data.records.length == 0) {
//没有更多数据
this.finished = true; //上拉加载完毕
}
}
if (this.isLoading) {
//关闭下拉刷新
this.isLoading = false; //关闭下拉刷新中
this.contractData = res.data.records; //重新给数据赋值
if (this.finished) {
//如果上拉加载完毕为true则设为false。解决上拉加载完毕后再下拉刷新就不会执行上拉加载问题
this.finished = false;
}
}
} else {
this.noData = false;
this.loading = false;
this.isLoading = false;
this.finished = false;
//当请求没有数据时 第一次请求
if (res.data.records.length == 0) {
this.noData = true;
} else {
this.contractData = res.data.records;
}
}
} else {
this.$toast(res.msg);
}
})
.catch(error => {});
},
created中调用方法获取数据
created(){
//方法调用
this.getInvoicingContractListFun();
}
最后在beforeDestroy生命周期清除定时器
beforeDestroy() {
clearTimeout(this.timer);
this.timer = null;
}
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