本次项目为基于vue2+vant的H5,套壳APP,无法使用APK的扫码时选择使用h5qrcode进行扫码,实现扫码单。
1.安装html5-qrcode
npm i html5-qrcode
2.在所需组件处使用
模版:
<div class="canTab" @click="startScan" v-if="!isScanning"><van-icon name="scan" size="45" color="#fff" /></div>
<div class="scan" v-if="isScanning">
<div class="scan-box">
<div id="scanning" width="800px"></div>
</div>
<span class="close-scan" @click="stopScan">
<svg t="1681382339822" class="icon" viewBox="0 0 1024 1024" version="1.1" xmlns="http://www.w3.org/2000/svg" p-id="2626" width="200" height="200">
<path d="M512 960c-247.039484 0-448-200.960516-448-448S264.960516 64 512 64 960 264.960516 960 512 759.039484 960 512 960zM512 128.287273c-211.584464 0-383.712727 172.128262-383.712727 383.712727 0 211.551781 172.128262 383.712727 383.712727 383.712727 211.551781 0 383.712727-172.159226 383.712727-383.712727C895.712727 300.415536 723.551781 128.287273 512 128.287273z" fill="#ffffff" p-id="2627"></path>
<path d="M557.05545 513.376159l138.367639-136.864185c12.576374-12.416396 12.672705-32.671738 0.25631-45.248112s-32.704421-12.672705-45.248112-0.25631l-138.560301 137.024163-136.447897-136.864185c-12.512727-12.512727-32.735385-12.576374-45.248112-0.063647-12.512727 12.480043-12.54369 32.735385-0.063647 45.248112l136.255235 136.671523-137.376804 135.904314c-12.576374 12.447359-12.672705 32.671738-0.25631 45.248112 6.271845 6.335493 14.496116 9.504099 22.751351 9.504099 8.12794 0 16.25588-3.103239 22.496761-9.247789l137.567746-136.064292 138.687596 139.136568c6.240882 6.271845 14.432469 9.407768 22.65674 9.407768 8.191587 0 16.352211-3.135923 22.591372-9.34412 12.512727-12.480043 12.54369-32.704421 0.063647-45.248112L557.05545 513.376159z" fill="#ffffff" p-id="2628"></path>
</svg>
</span>
</div>
JS:
// 引入扫描二维码
import { Html5Qrcode } from 'html5-qrcode';
data() {
return {
isScanning: false, // 扫码
}
method: {
//扫码接单
startScan(){
this.isScanning = true
this.$nextTick(() => {
this.html5QrCode = new Html5Qrcode('scanning');
this.html5QrCode.start({
facingMode: "environment"
}, {
fps: 10,
aspectRatio: 1, // 4:3:1.333334 16:9:1.777778 1:1:1.0
qrbox: {
width: 280,
height: 280
},
}, (decodedText, decodedResult) => {
let codeUrl = decodedText; //获取二维码信息
// 以下为自己所需的业务逻辑处理
this.stopScan() // 结束扫码
// alert("识别结果" + decodedText)
}, errorMessage => {
},
)
.catch(err => {});
});
},
// 结束扫码
stopScan() {
this.html5QrCode.stop().then(() => {
this.isScanning = false;
})
},
}
style:
/* 扫码样式 */
.scan {
display: flex;
align-items: center;
justify-content: center;
flex-direction: column;
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
background: #000;
.scan-box {
width: 100%;
}
.close-scan {
position: absolute;
top: 20px;
right: 20px;
svg {
width: 40px;
height: 40px;
}
}
}
.start-scan{
position: absolute;
top: calc(50% - 25px);
left: calc(50% - 100px);
display: flex;
align-items: center;
justify-content: center;
border: none;
width: 200px;
height: 50px;
background: #00aaff;
color: #fff;
border-radius: 10px;
}
这是复制别人的逻辑,已经表明出处,仅供自己记录笔记,防止以后使用时忘记。
完整代码(此处仅有扫描二维码代码,其他已摘去):
<template>
<div class="driverMyBox">
<div class="canTab" @click="startScan" v-if="!isScanning">
<van-icon name="scan" size="45" color="#fff" />
</div>
<div class="scan" v-if="isScanning">
<div class="scan-box">
<div id="scanning" width="800px"></div>
</div>
<span class="close-scan" @click="stopScan">
<svg t="1681382339822" class="icon" viewBox="0 0 1024 1024" version="1.1" xmlns="http://www.w3.org/2000/svg" p-id="2626" width="200" height="200">
<path d="M512 960c-247.039484 0-448-200.960516-448-448S264.960516 64 512 64 960 264.960516 960 512 759.039484 960 512 960zM512 128.287273c-211.584464 0-383.712727 172.128262-383.712727 383.712727 0 211.551781 172.128262 383.712727 383.712727 383.712727 211.551781 0 383.712727-172.159226 383.712727-383.712727C895.712727 300.415536 723.551781 128.287273 512 128.287273z" fill="#ffffff" p-id="2627"></path>
<path d="M557.05545 513.376159l138.367639-136.864185c12.576374-12.416396 12.672705-32.671738 0.25631-45.248112s-32.704421-12.672705-45.248112-0.25631l-138.560301 137.024163-136.447897-136.864185c-12.512727-12.512727-32.735385-12.576374-45.248112-0.063647-12.512727 12.480043-12.54369 32.735385-0.063647 45.248112l136.255235 136.671523-137.376804 135.904314c-12.576374 12.447359-12.672705 32.671738-0.25631 45.248112 6.271845 6.335493 14.496116 9.504099 22.751351 9.504099 8.12794 0 16.25588-3.103239 22.496761-9.247789l137.567746-136.064292 138.687596 139.136568c6.240882 6.271845 14.432469 9.407768 22.65674 9.407768 8.191587 0 16.352211-3.135923 22.591372-9.34412 12.512727-12.480043 12.54369-32.704421 0.063647-45.248112L557.05545 513.376159z" fill="#ffffff" p-id="2628"></path>
</svg>
</span>
</div>
</div>
</template>
<script type='text/javascript'>
// 引入扫描二维码
import { Html5Qrcode } from 'html5-qrcode';
export default {
data() {
return {
//扫码
isScanning: false, // 是否正在扫一扫
}
//扫码接单
startScan(){
this.isScanning = true;
this.$nextTick(() => {
this.html5QrCode = new Html5Qrcode('scanning');
this.html5QrCode.start({
facingMode: "environment"
}, {
fps: 10,
aspectRatio: 1, // 4:3:1.333334 16:9:1.777778 1:1:1.0
qrbox: {
width: 280,
height: 280
},
}, (decodedText, decodedResult) => {
let codeUrl = decodedText; //获取扫码信息
//这里进行自己的业务逻辑操作
this.stopScan() // 结束扫码
// alert("识别结果" + decodedText)
}, errorMessage => {
},
)
.catch(err => {});
});
},
// 结束扫码
stopScan() {
this.html5QrCode.stop().then(() => {
this.isScanning = false;
})
},
}
</script>
<style lang='scss' scoped>
/* 扫码样式 */
.scan {
display: flex;
align-items: center;
justify-content: center;
flex-direction: column;
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
background: #000;
.scan-box {
width: 100%;
}
.close-scan {
position: absolute;
top: 20px;
right: 20px;
svg {
width: 40px;
height: 40px;
}
}
}
.start-scan{
position: absolute;
top: calc(50% - 25px);
left: calc(50% - 100px);
display: flex;
align-items: center;
justify-content: center;
border: none;
width: 200px;
height: 50px;
background: #00aaff;
color: #fff;
border-radius: 10px;
}
</style>
技术借鉴出处:
https://www.cnblogs.com/kinwai/p/17316033.html