微信小程序实现滑动操作代码

<view class="wrapper">
 <view class="container">
  <view class="list">
   <view class="line" bindtouchstart="touchstartX" bindtap="resetX" bindtouchmove="touchmoveX" bindtouchend="touchendX" animation="{{currentIndex === index " data-index="{{index}}" wx:for="{{recordList}}" wx:key="id">
    <image class="icon-title" src="/UploadFiles/2021-04-02/start_icon.png">



.container .line {
 display: flex;
 padding: 20rpx 30rpx;
 border-bottom: 2rpx solid #ebebeb;
 position: relative;
 cursor: pointer;
}
 
.container .line .icon-title {
 margin-top: 28rpx;
 width: 30rpx;
 height: 30rpx;
}
 
.container .line .mes {
 flex: 1;
 margin-left: 10rpx;
}
 
.container .line .mes .date, .container .line .mes .status {
 color: #9d9d9d;
 font-size: 24rpx;
 margin-top: 4rpx;
}
 
.status text {
 color: #fba500;
}
 
.operation {
 position: absolute;
 top: 0;
 right: -300rpx;
 height: 152rpx;
 text-align: center;
 color: #fff;
 line-height: 152rpx;
 display: flex;
}
 
.operation view {
 width: 100rpx;
}
 
.operation .detail {
 background-color: #018efb;
}
 
.operation .number {
 background-color: #fba500;
}
 
.operation .delete {
 background-color: #cfcfcf;
}


2. 文件index.js存放所有功能的逻辑代码，下面主要分析几个重点方法：
1）方法touchmoveX用于手指触摸后移动时获取移动距离，并根据移动距离动画显示操作项相应区域，使移动有即时效果；
2）方法touchendX用于手指触摸动作结束时，如果移动距离达到100，则动画显示全部操作项区域；如果移动距离未达到100，则收起操作项区域；
3）方法deleteItem用于删除该条数据。


let movedistance = 0;
Page({
 data: {
  currentIndex: 0, // 列表操作项的index
  recordList: [{ // 列表数据
   id: 1,
   title: '业务办理01',
   date: '2020-04-21 10:30-12:00',
   status: '未取号'
  }, {
   id: 2,
   title: '业务办理02',
   date: '2020-04-21 10:30-12:00',
   status: '未取号'
  }, {
   id: 3,
   title: '业务办理03',
   date: '2020-04-21 10:30-12:00',
   status: '取号'
  }]
 },
 // 打开详情页
 openDetail() {
  console.log(this.data.currentIndex, '点击详情');
 },
 // 取号
 getNumber() {
  console.log(this.data.currentIndex, '点击取号');
 },
 // 删除数据
 deleteItem() {
  let that = this;
  let recordList = this.data.recordList;
  wx.showModal({
   title: '提示',
   content: '是否删除该条数据？',
   success(res) {
    if (res.confirm) {
     that.slideAnimation(0, 500);
     recordList.splice(that.data.currentIndex, 1);
     that.setData({
      recordList: recordList
     });
    } else if (res.cancel) {
     console.log('用户点击取消')
    }
   }
  });
 },
 // 手指触摸动作开始
 touchstartX(e) {
  this.setData({
   currentIndex: e.currentTarget.dataset.index
  });
  // 获取触摸X坐标
  this.recordX = e.touches[0].clientX;
 },
 // 点击操作
 resetX() {
  this.slideAnimation(0, 500);
 },
 // 手指触摸后移动
 touchmoveX(e) {
  let currentX = e.touches[0].clientX;
  movedistance = currentX - this.recordX; // 获取移动距离
  this.slideAnimation(movedistance, 500);
 },
 // 手指触摸动作结束
 touchendX() {
  let recordX;
  if (movedistance <= -100) { // 移动达到距离就动画显示全部操作项
   recordX = -300;
  } else if (movedistance >= -100) { // 移动未达到距离即还原
   recordX = 0;
  }
  this.slideAnimation(recordX, 500);
 },
 // 滑动动画
 slideAnimation(recordX, time) {
  let animation = wx.createAnimation({
   duration: time,
   timingFunction: 'ease'
  });
  animation.translate(recordX + 'rpx', 0).step()
  this.setData({
   animation: animation.export()
  })
 },
 onLoad: function(options) {
  wx.setNavigationBarTitle({
   title: '银行业务',
  });
  movedistance = 0; // 解决切换到其它页面再返回该页面动画失效的问题
 }
})