微信小程序——页面滑动事件

wxml:

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

wxss:

1 .ball {
2   box-shadow:2px 2px 10px #AAA;
3   border-radius: 20px;
4   position: absolute; 
5 }

js:

 1 //js
 2 Page({
 3   data: {
 4     lastX: 0,          //滑动开始x轴位置
 5     lastY: 0,          //滑动开始y轴位置
 6     text: "没有滑动",
 7     currentGesture: 0, //标识手势
 8   },
 9   //滑动移动事件
10   handletouchmove: function (event) {
11     var currentX = event.touches[0].pageX
12     var currentY = event.touches[0].pageY
13     var tx = currentX - this.data.lastX
14     var ty = currentY - this.data.lastY
15     var text = ""
16     //左右方向滑动
17     if (Math.abs(tx) > Math.abs(ty)) {
18       if (tx < 0)
19         text = "向左滑动"
20       else if (tx > 0)
21         text = "向右滑动"
22     }
23     //上下方向滑动
24     else {
25       if (ty < 0)
26         text = "向上滑动"
27       else if (ty > 0)
28         text = "向下滑动"
29     }
30 
31     //将当前坐标进行保存以进行下一次计算
32     this.data.lastX = currentX
33     this.data.lastY = currentY
34     this.setData({
35       text: text,
36     });
37   },
38 
39   //滑动开始事件
40   handletouchtart: function (event) {
41     this.data.lastX = event.touches[0].pageX
42     this.data.lastY = event.touches[0].pageY
43   },
44   //滑动结束事件
45   handletouchend: function (event) {
46     this.data.currentGesture = 0;
47     this.setData({
48       text: "没有滑动",
49     });
50   },
51 })

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