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