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Vue vant-ui框架实现上拉加载下拉刷新功能

作者：船长在船上

功能需求——获取后端接口返回的数据，实现列表数据上滑加载更多下一页数据，下拉数据刷新功能，结合vant-ui框架实现。可直接参考使用

下拉刷新效果：

知识点速记

基本用法

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。

下拉刷新

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：

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：

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;
}

到此这篇关于Vue vant-ui框架实现上拉加载下拉刷新功能的文章就介绍到这了,更多相关Vue vant-ui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！

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