微信小程序 scroll-view实现上拉加载与下拉刷新的实例

微信小程序 scroll-view实现上拉加载与下拉刷新的实例

实现效果图：

如图，使用小程序的scroll-view实现的上拉加载数据，下拉刷新数据，试下代码如下：

js文件代码：

var url = "http://192.168.30.4:8080/gtxcx/carrier/getCarrier.action"; 
var page = 1; 
 
var GetList = function (that) { 
 that.setData({ 
 hidden: false 
 }); 
 wx.request({ 
 url: url, 
 data: { 
  pageSize: 10, 
  pageNo: page 
 }, 
 success: function (res) { 
  var l = that.data.list 
  for (var i = 0; i < res.data.length; i++) { 
  l.push(res.data[i]) 
  } 
  that.setData({ 
  list: l 
  }); 
  page++; 
  that.setData({ 
  hidden: true 
  }); 
 } 
 }); 
} 
Page({ 
 data: { 
 hidden: true, 
 list: [], 
 scrollTop: 0, 
 scrollHeight: 0 
 }, 
 onLoad: function () { 
 var that = this; 
 wx.getSystemInfo({ 
  success: function (res) { 
  console.info(res.windowHeight); 
  that.setData({ 
   scrollHeight: res.windowHeight 
  }); 
  } 
 }); 
 }, 
 onShow: function () { 
 var that = this; 
 GetList(that); 
 }, 
 bindDownLoad: function () { 
 var that = this; 
 GetList(that); 
 }, 
 scroll: function (event) { 
 this.setData({ 
  scrollTop: event.detail.scrollTop 
 }); 
 }, 
 refresh: function (event) { 
 page = 1; 
 this.setData({ 
  list: [], 
  scrollTop: 0 
 }); 
 GetList(this) 
 }, 
 onPullDownRefresh: function () { 
 console.log("下拉") 
 }, 
 onReachBottom: function () { 
 console.log("上拉"); 
 } 
})

json文件代码

{ 
 "navigationBarTitleText": "下拉刷新", 
 "enablePullDownRefresh": true, 
 "backgroundTextStyle": "dark" 
}

wxml文件代码：

<view class="container"> 
 <scroll-view scroll-top="{{scrollTop}}" scroll-y="true" style="height:{{scrollHeight}}px;" 
 class="list" bindscrolltolower="bindDownLoad" bindscroll="scroll" bindscrolltoupper="refresh"> 
 <view class="item" wx:for="{{list}}"> 
  <image class="img" src="https://cdn.kuaidi100.com/images/all/56/zhongtong.png"></image> 
  <view class="text"> 
  <text class="title">{{item.carrierName}}</text> 
  <text class="description">{{item.carrierTelphone}}</text> 
  <text class="description">{{item.carrierId}}</text> 
  </view> 
 </view> 
 </scroll-view> 
 <view class="body-view"> 
 <loading hidden="{{hidden}}" bindchange="loadingChange"> 
  加载中... 
 </loading> 
 </view> 
</view>

wxss文件代码

.container{ 
 height: 100%; 
 padding: 20rpx; 
} 
 
.item{ 
 display: flex; 
 margin-bottom: 50rpx; 
width:100%; 
background:#f0f0f0; 
overflow:hidden; 
} 
 
.img{ 
 height: 100rpx; 
 width: 100rpx; 
 border-radius: 50%; 
} 
 
.text{ 
 display: flex; 
 flex-shrink:1; 
 flex-grow:1; 
 padding: 10rpx; 
 flex-wrap: wrap; 
 font-size: 50rpx; 
} 
 
.title{ 
 font-size: 50rpx; 
 margin:10rpx 100rpx 10rpx 100rpx; 
} 
.description{ 
 font-size: 50rpx; 
 align-self:flex-end; 
}

注意，

http://192.168.30.4:8080/gtxcx/carrier/getCarrier.action这个接口就是更具传入的页数，每次返回不同数据。

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