微信小程序——页面滑动事件

wxml:

 <view id="id" class = "ball" bindtap = "handletap" bindtouchstart = "handletouchtart" bindtouchmove="handletouchmove" bindtouchend="handletouchend" style = "width : 100%px; height : 40px;">
 {{text}}
 </view>

wxss:

 .ball {
   box-shadow:2px 2px 10px #AAA;
   border-radius: 20px;
   position: absolute;
 }

js:

 //js
 Page({
   data: {
     lastX: 0,          //滑动开始x轴位置
     lastY: 0,          //滑动开始y轴位置
     text: "没有滑动",
     currentGesture: 0, //标识手势
   },
   //滑动移动事件
   handletouchmove: function (event) {
     var currentX = event.touches[0].pageX
     var currentY = event.touches[0].pageY
     var tx = currentX - this.data.lastX
     var ty = currentY - this.data.lastY
     var text = ""
     //左右方向滑动
     if (Math.abs(tx) > Math.abs(ty)) {
       if (tx < 0)
         text = "向左滑动"
       else if (tx > 0)
         text = "向右滑动"
     }
     //上下方向滑动
     else {
       if (ty < 0)
         text = "向上滑动"
       else if (ty > 0)
         text = "向下滑动"
     }

     //将当前坐标进行保存以进行下一次计算
     this.data.lastX = currentX
     this.data.lastY = currentY
     this.setData({
       text: text,
     });
   },

   //滑动开始事件
   handletouchtart: function (event) {
     this.data.lastX = event.touches[0].pageX
     this.data.lastY = event.touches[0].pageY
   },
   //滑动结束事件
   handletouchend: function (event) {
     this.data.currentGesture = 0;
     this.setData({
       text: "没有滑动",
     });
   },
 })

原文：http://blog.csdn.net/crazytea/article/details/53228755