Vue?vant-ui框架實現上拉加載下拉刷新功能
下拉刷新效果:
知識點速記
基本用法
List通過loading
和finished
兩個變量控制加載狀態(tài),當組件滾動到底部時,會觸發(fā)load
事件并將loading
設置成true
。此時可以發(fā)起異步操作并更新數據,數據更新完畢后,將loading
設置成false
即可。若數據已全部加載完畢,則直接將finished
設置成true
即可。
下拉刷新
List 組件可以與PullRefresh組件結合使用,實現下拉刷新的效果。
注意事項:
- v-model : 是否處于加載狀態(tài),加載過程中不觸發(fā)
load
事件 - finished: 是否已加載完成,加載完成后不再觸發(fā)
load
事件 - offset : 滾動條與底部距離小于 offset 時觸發(fā)
load
事件 - loading-text加載過程中的提示文字
- finished-text加載完成后的提示文字
List
有以下三種狀態(tài),理解這些狀態(tài)有助于你正確地使用List
組件:
- 非加載中,
loading
為false
,此時會根據列表滾動位置判斷是否觸發(fā)load
事件(列表內容不足一屏幕時,會直接觸發(fā)) - 加載中,
loading
為true
,表示正在發(fā)送異步請求,此時不會觸發(fā)load
事件 - 加載完成,
finished
為true
,此時不會觸發(fā)load
事件
在每次請求完畢后,需要手動將loading
設置為false
,表示加載結束
事件使用:@load方法
滾動條與底部距離小于 offset 時觸發(fā)
代碼實現
1.頁面布局
<template> <div class="myOrder"> <!--公共頭部組件--> <nav-bar-top :titleText="titleName" :arrowTrue="arrowTrue"></nav-bar-top> <!--主體部分--> <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"> <!-- 加載 --> <van-list v-if="contractData.length>0" v-model="loading" :finished="finished" :immediate-check="false" finished-text="我也是有底線的" @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">合同編號:{{item.contractNumber}}</span> <!-- <span class="color3 van-ellipsis">{{item.outsideContractId?'訂單':'合同'}}編號:{{item.contractNumber}}</span> --> <!-- <img src="../../assets/index/VIPICO.png" class="vipIcon pl20"> --> </div> <!-- 發(fā)票開具狀態(tài)(0:待申請,1:待審核,2:審核未通過,3:審核已通過) --> <div> <van-tag :text-color="item.status=='0'?'#FF9133':item.status=='1'?'#4972FF':item.status=='2'?'#F1403C':'#00CE80'" class="tagStyle"> {{item.status=="0"?"待申請":item.status=="1"?"待審核":item.status=="2"?"審核未通過":"審核通過"}} </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"?"隨船裝/":""}} <span class="" v-if="item.cargoWeight">{{item.cargoWeight}}噸/</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">裝貨時間</span> </div> <div class="timeColor fontSize34 mt10 timeError"> {{item.loadingTime?item.loadingTime:"暫無"}} </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">合同金額</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/噸":item.contractAmount+"元"}} </span> <span v-else>暫無報價</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)">失敗原因</van-button> <van-button class="ml20 borderRaduis" color="#024ee0" type="info" size="small">{{item.status=='2'?'重新申請':'申請開票'}}</van-button> </div> </van-col> </van-row> </van-list> </van-pull-refresh> </div> </div> </template>
2.樣式
.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數據定義:
data() { return { zwdd:require("../../assets/img/zwdd.png"), titleName: "我要開票", arrowTrue: true, page: 1, pageSize: 10, isLoading: false, loading: false, finished: false, noData: false, contractData: [], timer:null, }; },
加載更多方法onLoad:
// 加載更多 onLoad() { this.loading = true; this.timer = setTimeout(() => { this.page++; this.getInvoicingContractListFun(); }, 1000); },
下拉刷新方法onRefresh:下拉刷新調用接口,并且頁數=1
// 刷新 onRefresh() { this.isLoading = true; this.page = 1; if (this.contractData.length == 0) { this.isLoading = false; } this.getInvoicingContractListFun(); },
處理數據列表方法getInvoicingContractListFun:
調用接口,傳遞相應的參數,獲取到數據,去判斷處理數據數據的加載,數據合并操作,利用定義的loading、finished、isLoading控制數據上拉數據加載。
// 數據列表方法 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; //當請求前有數據時 第n次請求 if (this.loading) { // 上拉加載 this.contractData = this.contractData.concat(res.data.records); //上拉加載新數據添加到數組中 this.$nextTick(() => { //在下次 DOM 更新循環(huán)結束之后執(zhí)行延遲回調 this.loading = false; //關閉上拉加載中 }); if (res.data.records.length == 0) { //沒有更多數據 this.finished = true; //上拉加載完畢 } } if (this.isLoading) { //關閉下拉刷新 this.isLoading = false; //關閉下拉刷新中 this.contractData = res.data.records; //重新給數據賦值 if (this.finished) { //如果上拉加載完畢為true則設為false。解決上拉加載完畢后再下拉刷新就不會執(zhí)行上拉加載問題 this.finished = false; } } } else { this.noData = false; this.loading = false; this.isLoading = false; this.finished = false; //當請求沒有數據時 第一次請求 if (res.data.records.length == 0) { this.noData = true; } else { this.contractData = res.data.records; } } } else { this.$toast(res.msg); } }) .catch(error => {}); },
created中調用方法獲取數據
created(){ //方法調用 this.getInvoicingContractListFun(); }
最后在beforeDestroy生命周期清除定時器
beforeDestroy() { clearTimeout(this.timer); this.timer = null; }
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