/**

   * 页面的初始数据

   */

  data: {

    bankList:[

      { ‘bank‘:‘中国建设银行（建安支行）‘,

        ‘names‘:‘章三‘,

        ‘cardNum‘:‘***** ******* ***** ***0910‘

      },

      {

        ‘bank‘: ‘中国工商银行（建安支行）‘,

        ‘names‘: ‘章三‘,

        ‘cardNum‘: ‘***** ******* ***** ***0910‘

      },

    ],

    editIndex: 0,

    delBtnWidth:180//删除按钮宽度单位（rpx）

  },

  /*自定义方法--start */

  //

  touchS: function (e) {

    if (e.touches.length == 1) {

      this.setData({

        stX: e.touches[0].clientX

      });

    }

  },

  touchM: function (e) {

    console.log("touchM:" + e);

     var that = this

    if (e.touches.length == 1) {

      //记录触摸点位置的X坐标

      var moveX = e.touches[0].clientX;

      //计算手指起始点的X坐标与当前触摸点的X坐标的差值

      var disX = that.data.stX - moveX;

      //delBtnWidth 为右侧按钮区域的宽度

      var delBtnWidth = that.data.delBtnWidth;

      var txtStyle = "true";

      if(disX == 0 || disX < 0){

        //如果移动距离小于等于0，文本层位置不变 width: 660rpx;border-radius: 10rpx;

        // txtStyle = "left:0px";

        txtStyle = "true";

      }else if(disX > 0 ){

        //移动距离大于0，文本层left值等于手指移动距离 width: 470rpx;border-radius: 10rpx 0px 0px 10rpx;

        // txtStyle = "left:-"+disX+"px";

        txtStyle = "false";

        // if(disX>=delBtnWidth){

        //   //控制手指移动距离最大值为删除按钮的宽度

        //   txtStyle = "left:-"+delBtnWidth+"px";

        // }

      }

      //获取手指触摸的是哪一个item

      var index = e.currentTarget.dataset.index;

      var list = that.data.bankList;

      //将拼接好的样式设置到当前item中

      list[index].txtStyle = txtStyle;

      //更新列表的状态

      this.setData({ bankList:list });

      // console.log(this.data.bankList)

    }

  },

  touchE: function (e) {

    console.log("touchE" + e);

    var that = this

    if (e.changedTouches.length == 1) {

      //手指移动结束后触摸点位置的X坐标

      var endX = e.changedTouches[0].clientX;

      //触摸开始与结束，手指移动的距离

      var disX = that.data.stX - endX;

      var delBtnWidth = that.data.delBtnWidth;

      //如果距离小于删除按钮的1/2，不显示删除按钮

      var txtStyle = disX > delBtnWidth/2 ? "true":"false";

      //获取手指触摸的是哪一项

      var index = e.currentTarget.dataset.index;

      var list = that.data.bankList; list[index].txtStyle = txtStyle;

      //更新列表的状态

      that.setData({ bankList:list });

    }

  },

 

 

  /*自定义方法--end */