<view class="container1">
<view class="touch-item {{item.isTouchMove ? 'touch-move-active' : ''}}" data-index="{{index}}" bindtouchstart="touchstart" bindtouchmove="touchmove" wx:for="{{items}}" wx:key="">
<view class="content">{{item.name}}</view>
<view class="del" data-index="{{index}}">
<text>设为默认</text>
<text>删除</text>
</view>
</view>
</view>
.touch-item {
font-size: 28rpx;
display: flex;
justify-content: space-between;
border-bottom:1px solid #ccc;
width: 100%;
overflow: hidden
}
.container{
padding: 0;
}
.content {
width: 100%;
padding: 30rpx 16rpx;
-webkit-transition: all 0.4s;
transition: all 0.4s;
transform: translateX(180rpx);
margin-left: -180rpx
}
.del {
background-color: orangered;
width: 180rpx;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
color: #fff;
transform: translateX(180rpx);
-webkit-transition: all 0.4s;
transition: all 0.4s;
}
.touch-move-active .content,
.touch-move-active .del {
-webkit-transform: translateX(0);
transform: translateX(0);
}
var app = getApp()
Page({
data: {
items: [],
startX: 0, //开始坐标
startY: 0,
items:[
{name:'cuichangle',phone:'15324912581'},
{ name: 'aaaaaaa', phone: '11111111111' },
{ name: 'bbbbbbbbbb', phone: '22222222' },
{ name: 'ccccccccccccc', phone: '3333333333' },
{ name: 'dddddddddddd', phone: '44444444444' },
{ name: 'eeeeeeeee', phone: '55555555555' },
{ name: 'ffffffffff', phone: '66666666' },
]
},
onLoad: function () {
},
//手指触摸动作开始 记录起点X坐标
touchstart: function (e) {
//开始触摸时 重置所有删除
this.data.items.forEach(function (v, i) {
if (v.isTouchMove)//只操作为true的
v.isTouchMove = false;
})
this.setData({
startX: e.changedTouches[0].clientX,
startY: e.changedTouches[0].clientY,
items: this.data.items
})
},
//滑动事件处理
touchmove: function (e) {
var that = this,
index = e.currentTarget.dataset.index,//当前索引
startX = that.data.startX,//开始X坐标
startY = that.data.startY,//开始Y坐标
touchMoveX = e.changedTouches[0].clientX,//滑动变化坐标
touchMoveY = e.changedTouches[0].clientY,//滑动变化坐标
//获取滑动角度
angle = that.angle({ X: startX, Y: startY }, { X: touchMoveX, Y: touchMoveY });
that.data.items.forEach(function (v, i) {
v.isTouchMove = false
//滑动超过30度角 return
if (Math.abs(angle) > 30) return;
if (i == index) {
if (touchMoveX > startX) //右滑
v.isTouchMove = false
else //左滑
v.isTouchMove = true
}
})
//更新数据
that.setData({
items: that.data.items
})
},
/**
* 计算滑动角度
* @param {Object} start 起点坐标
* @param {Object} end 终点坐标
*/
angle: function (start, end) {
var _X = end.X - start.X,
_Y = end.Y - start.Y
//返回角度 /Math.atan()返回数字的反正切值
return 360 * Math.atan(_Y / _X) / (2 * Math.PI);
},
//删除事件
del: function (e) {
this.data.items.splice(e.currentTarget.dataset.index, 1)
this.setData({
items: this.data.items
})
}
})