基于Vue框架vux组件库实现上拉刷新功能

最近公司在研发app,选择了基于vue框架的vux组件库，现总结在实现上拉刷新功能遇到的坑：
1.问题：只刷新一次，解决方法：需要自己手动重置状态
this.scrollerstatus.pullupstatus = ‘default'，
2.问题：不能滚动，解决方法：因为启用keep-alive缓存，需要设置

activated () {
 this.$refs.scroller.reset()
}

如果还没效果，请在获取后台数据后，执行如下代码

this.$nxttick(() => {
    this.$refs.scroller.reset()
   })

贴出整个页面的代码。

<template> 
  <div style="height:100%;">

    <x-header slot="header" :left-options="{showback: false}" >会议列表 
    <a slot="right" v-on:click="show = true" > <icon type="search"></icon> </button> </a> 
    </x-header>

    <!-- 会议列表 -->
    <scroller v-model="scrollerstatus" height="-46"  lock-x scrollbar-y ref="scroller" :bounce="isbounce" :use-pullup="showup" :pullup-config="upobj" @on-pullup-loading="selpullup" >
    <div class="box2">
      <p v-for="list, index in lists">  
         <router-link :to="{ path: list.id } ">
           <p style="height:40px;"> 
            <span class="spanmeettitle" v-html='(index+1) + " . " + list.name' ></span>
            <span class="spanmeetstatu" v-html='list.status'></span>
           </p> 
          <p class="prevsuper">
           <form-preview header-label="" header-value="" :bodyitems="list" :footer-buttons="buttons1"></form-preview>
          </p>
          </router-link>  
          <hr>  
       </p> 
    </div>
    </scroller>

   <!-- 导航 -->
   <home></home>

   <!-- 搜索 --> 
   <popup v-model="show" @on-hide="log('hide')" @on-show="log('show')" height="93%">
   <div class="popup0">
    <group> 
     <x-input v-model='meetname' placeholder="请输入“会议名称”搜索"></x-input> 
     <div style="float:left;margin-top: -36px;"><icon type="search"></icon></div> 
    </group>
 <!--  
    <group> 
     <checklist :max=1 title="会议审批状态" required :options="commonlist" v-model="checkstatus" @on-change="change"></checklist> 
    </group> -->

     <group title="会议审批状态">
     <radio :options="commonlist" v-model="checkstatus" @on-change="change"></radio>
    </group>

    <group title="会议类型">
      <selector placeholder="请选择会议类型" v-model="checktype" :options="meettype"></selector>
    </group>

     <group title="召开时间">
     <flexbox>
      <flexbox-item>
      <div class="flex-demo" style="background-color:white;color:black;height:45px"> 
       <datetime title='' placeholder="请选择" v-model="starttime" format="yyyy-mm-dd hh:mm" @on-change="change" ></datetime>
      </div>
      </flexbox-item>
      至
      <flexbox-item>
      <div class="flex-demo" style="background-color:white;color:black;height:45px">
       <datetime title='' placeholder="请选择" v-model="stoptime" format="yyyy-mm-dd hh:mm" @on-change="change" ></datetime>
      </div>
      </flexbox-item>
     </flexbox> 
    </group>
    <br>
    <flexbox orient="vertical">
     <flexbox-item><div class="flex-demo" v-on:click="tosearch" >确定</div></flexbox-item>
     <flexbox-item><div class="flex-demo" v-on:click="show = false" style="background-color:white;color:black">取消</div></flexbox-item>
    </flexbox>

   </div>
  </popup>

  <toast v-model="showtoast">已加载全部数据</toast>

  <loading v-model="isshowloading" :text="textloading"></loading>

  <alert v-model="isshowalert" :title="alertcongratulations" > {{ alertmessage }}</alert>
  </div>
</template>

<style type="text/css">
 .weui-form-preview__value{
  font-size: 1.1em !important;
  color: black;
 }
 .spanmeettitle{
  float: left; 
  border-radius: 13px;
  padding:10px 6px; 
  font-size: 15px; 
  font-weight: bold;
  margin-left: 3px;
  color: black;
 }
 .spanmeetstatu{
   float: right;
   background-color: green;
   border-radius: 10px;
   padding:6px 5px;
   color: white;
   font-size: 13px;
   margin-top: 5px;
 }
 .flex-demo{
  height: 30px;padding-top: 5px; 
 }
 .selected{
  color: blue !important;
  background-color: transparent;
 }
 .popup0 {
 padding-bottom:15px;
 height:200px;
 }
 .popup1 {
  width:100%;
  height:100%;
 }
 .popup2 {
  padding-bottom:15px;
  height:400px;
 }
 .box1 {
  height: 100px;
  position: relative;
  width: 1490px;
 }
 .box1-item {
  width: 200px;
  height: 100px;
  background-color: #ccc;
  display:inline-block;
  margin-left: 15px;
  float: left;
  text-align: center;
  line-height: 100px;
 }
 .box1-item:first-child {
  margin-left: 0;
 }
 .box2-wrap {
  height: 300px;
  overflow: hidden;
 }
</style>

<script>
import { xheader, group, formpreview, tabbar, tabbaritem, scroller, icon, popup, xswitch, toast, xinput, checklist, datetime, flexbox, flexboxitem, selector, loading, alert, radio } from 'vux'
import home from './home'

export default {
 components: {
  xheader,
  home,
  group,
  formpreview,
  tabbar,
  tabbaritem,
  scroller,
  icon,
  popup,
  xswitch,
  toast,
  xinput,
  checklist,
  datetime,
  flexbox,
  flexboxitem,
  selector,
  loading,
  alert,
  radio
 },
 data () {
  return {
   type: '1',
   pageindex: 0,
   show: false,
   showtoast: false,
   showloading: false,
   showup: true,
   isbounce: false,
   isshowalert: false,
   alertcongratulations: '条件有误',
   textloading: '加载中',
   alertmessage: '‘召开时间' 不能大于 ‘结束时间'',
   value: '',
   meetname: '',
   starttime: '',
   stoptime: '',
   meettype: [],
   commonlist: [{key: '20', value: '审批中'}, {key: '50', value: '审批通过'}, {key: '', value: '全部'}],
   checkstatus: '',
   checktype: '',
   commonlist2: [],
   results: [],
   lists: [[]],
   buttons1: [{
    style: 'primary',
    text: '查看更多',
    link: '/message'
   }],
   upobj: {
    content: '请上拉刷新数据',
    pullupheight: 60,
    height: 40,
    autorefresh: false,
    downcontent: '请上拉刷新数据',
    upcontent: '请上拉刷新数据',
    loadingcontent: '加载中...',
    clsprefix: 'xs-plugin-pullup-'
   },
   isshowloading: false,
   textloading: '加载中',
   scrollerstatus: {
    pullupstatus: 'default'
   }
  }
 },
 mounted () {
  console.log(this.scrollerstatus.pullupstatus)
  this.getmeetlist(true)
  this.getmeettype()
  this.$nexttick(() => {
   this.$refs.scroller.reset()
  })
 },
 methods: {
  log (str) {
   console.log(str)
  },
  getmeetlist (isempty) {
   var approve_status = this.checkstatus
   var meeting_type = this.checktype
   this.isshowloading = true
   this.$http.post(global.httpsurl + '/meet/getmeetlist', {'humanid': global.userid, 'key': this.meetname, 'approve_status': approve_status, 'meeting_type': meeting_type, 'start_date': this.starttime, 'stop_date': this.stoptime, 'pageindex': this.pageindex, 'pagesize': '2'}).then(response => {
   // sucess callback
    console.log('111')
    var data = response.body.data
    if (isempty) {
     this.lists = []
     this.show = false
    } else {
     if (data && data.length === 0) {
      this.showtoast = true
      this.isshowloading = false
      this.scrollerstatus.pullupstatus = 'disabled' // 禁用下拉
      return
     }
    }
    for (var i = 0; i < data.length; i++) {
     if (data[i].approve_status < 20) {
      break
     }
     var personname = data[i].persion1_name
     if (personname && personname.length > 0) {
      personname = personname.substring(0, personname.indexof('>'))
     }
     var meetlist = []
     var obj = {
      label: '地点',
      value: data[i].address
     }
     meetlist.push(obj)
     obj = {
      label: '主持人',
      value: personname
     }
     meetlist.push(obj)
     obj = {
      label: '召开时间',
      value: global.formatdate.methods.toset(data[i].act_start_time, 'yyyy-mm-dd hh:mm')
     }
     meetlist.push(obj)
     obj = {
      label: '会议类型',
      value: data[i].meeting_type_name
     }
     meetlist.push(obj)
     meetlist.id = 'frommeet/' + data[i].meeting_minutes_guid + '/123'
     meetlist.name = data[i].meeting_name
     var vstatus = '审批中'
     if (data[i].approve_status === 50) {
      vstatus = '审批通过'
     }
     meetlist.status = vstatus
     this.lists.push(meetlist)
    }
    this.isshowloading = false
    if (!isempty) {
     this.scrollerstatus.pullupstatus = 'default'
     // this.$refs.scroller.reset()
     console.log(this.scrollerstatus.pullupstatus)
     this.$nexttick(() => {
      this.$refs.scroller.reset()
     })
    }
   }, response => {
   // error callback
    this.show = false
   })
  },
  showsearch () {
   this.show = true
  },
  change (val) {
   console.log('change', val)
   console.log(this.starttime)
  },
  change2 (val) {
   console.log('change', val)
  },
  resultclick () {
  },
  getresult () {
  },
  tosearch () {
   console.log(2222)
   if (this.starttime && this.stoptime && this.starttime > this.stoptime) {
    this.isshowalert = true
   } else {
    this.pageindex = 0
    this.getmeetlist(true)
   }
  },
  selpullup () {
   console.log('上拉刷新数据')
   this.pageindex++
   this.getmeetlist(false)
  },
  getmeettype () {
   this.$http.post(global.httpsurl + '/meet/getmeettype').then(response => {
    // sucess callback
    var data = response.body.data
    for (var i = data.length - 1; i >= 0; i--) {
     var obj = {
      key: data[i].type_guid,
      value: data[i].type_name
     }
     this.meettype.push(obj)
    }
   }, response => {
   // error callback
   })
  }
 },
 activated () {
  this.$refs.scroller.reset()
 }
}
</script>

 <style lang="less">
@import '~vux/src/styles/1px.less';

.flex-demo {
 text-align: center;
 color: #fff;
 background-color: #20b907;
 border-radius: 4px;
 background-clip: padding-box;
}
</style>

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。