- 发布：2022-05-28 11:36
- 更新：2022-05-31 14:13
- 阅读：382
产品分类： uniapp/App
PC开发环境操作系统： Mac
PC开发环境操作系统版本号： 12.3.1
HBuilderX类型： Alpha
HBuilderX版本号： 3.4.12
手机系统： 全部
手机厂商： 华为
页面类型： vue
vue版本： vue2
打包方式： 云端
项目创建方式： HBuilderX
测试过的手机：
示例代码：
<template>
<view>
<view class="area">
<view @touchstart="test.touchstart" @touchmove="test.touchmove" class="movable">{{test.msg}}</view>
</view>
</view>
</template>
<script module="test" lang="wxs">
var startX = 0
var startY = 0
var lastLeft = 50; var lastTop = 50
function touchstart(event, ins) {
console.log("touchstart")
var touch = event.touches[0] || event.changedTouches[0]
startX = touch.pageX
startY = touch.pageY
}
function touchmove(event, ins) {
var touch = event.touches[0] || event.changedTouches[0]
var pageX = touch.pageX
var pageY = touch.pageY
var left = pageX - startX + lastLeft
var top = pageY - startY + lastTop
startX = pageX
startY = pageY
lastLeft = left
lastTop = top
ins.selectComponent('.movable').setStyle({
left: left + 'px',
top: top + 'px'
})
return false
}
module.exports = {
msg: 'Hello',
touchstart: touchstart,
touchmove: touchmove
}
</script>
<script>
export default {
data() {
return {
}
},
methods: {
}
}
</script>
<style>
.area{
position: absolute;
width: 100%;
height: 100%;
}
.movable{
position: absolute;
width: 100px;
height: 100px;
left: 50px;
top: 50px;
color: white;
text-align: center;
line-height: 100px;
background-color: red;
}
</style>
<template>
<view>
<view class="area">
<view @touchstart="test.touchstart" @touchmove="test.touchmove" class="movable">{{test.msg}}</view>
</view>
</view>
</template>
<script module="test" lang="wxs">
var startX = 0
var startY = 0
var lastLeft = 50; var lastTop = 50
function touchstart(event, ins) {
console.log("touchstart")
var touch = event.touches[0] || event.changedTouches[0]
startX = touch.pageX
startY = touch.pageY
}
function touchmove(event, ins) {
var touch = event.touches[0] || event.changedTouches[0]
var pageX = touch.pageX
var pageY = touch.pageY
var left = pageX - startX + lastLeft
var top = pageY - startY + lastTop
startX = pageX
startY = pageY
lastLeft = left
lastTop = top
ins.selectComponent('.movable').setStyle({
left: left + 'px',
top: top + 'px'
})
return false
}
module.exports = {
msg: 'Hello',
touchstart: touchstart,
touchmove: touchmove
}
</script>
<script>
export default {
data() {
return {
}
},
methods: {
}
}
</script>
<style>
.area{
position: absolute;
width: 100%;
height: 100%;
}
.movable{
position: absolute;
width: 100px;
height: 100px;
left: 50px;
top: 50px;
color: white;
text-align: center;
line-height: 100px;
background-color: red;
}
</style>操作步骤：
运行到手机滑动报错
运行到手机滑动报错
预期结果：
不报错
不报错
实际结果：
TypeError: Cannot read properties of undefined (reading 'setStyle') at view.umd.min.js:1
TypeError: Cannot read properties of undefined (reading 'setStyle') at view.umd.min.js:1
bug描述：
使用wxs报错，返回信息undefined
TypeError: Cannot read properties of undefined (reading 'setStyle') at view.umd.min.js:1
使用代码为官方提供的案例
1 个回复
DCloud_UNI_GSQ
问题确认，已加分，即将修复
临时处理方案：