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31
pos-uni/uni_modules/mumu-getQrcode/changelog.md
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31
pos-uni/uni_modules/mumu-getQrcode/changelog.md
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@ -0,0 +1,31 @@
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## 1.3.0（2022-06-28）
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1. [修改] - 之前使用 canvas 在页面上展示画面，改为 video 标签在页面展示视频流画面。
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2. [增强] - 现在只获取扫描框中的画面进行二维码识别，这样可有效的节省资源与提高识别效率。
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3. [增强] - 提升调用摄像头的分辨率。
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4. [增强] - 提升识别大二维码的能力，之前在低端机上识别大二维码容易识别不到。
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5. [新增] - 新增错误事件返回，返回内部报错。错误说明请查看文档。
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## 1.2.1（2022-06-01）
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新增闪光灯开关(只有在谷歌内核浏览器中显示，推荐微信内置浏览器)
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新增https环境检测(总有人不看介绍，直接使用导致无法正常调用摄像头。)
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更新文档
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## 1.2.0（2022-06-01）
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新增闪光灯开关(只有在谷歌内核浏览器中显示，推荐微信内置浏览器)
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新增https环境检测(总有人不看介绍，直接使用导致无法正常调用摄像头。)
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## 1.1.0（2022-01-25）
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1.支持全屏 -
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2.支持前置摄像头 -
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3.支持高清调用摄像头 -
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## 1.0.4（2021-12-24）
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更新插件说明
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## 1.0.3（2021-12-21）
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希望大家多去我小程序中逛一些，就当支持作者了。谢谢大家，底下有小程序二维码。
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## 1.0.2（2021-12-21）
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更新文档
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## 1.0.1（2021-12-21）
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正式上线插件
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## 1.0.0（2021-12-21）
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1.0.0
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10102
pos-uni/uni_modules/mumu-getQrcode/components/mumu-getQrcode/jsQR.js
Normal file
10102
pos-uni/uni_modules/mumu-getQrcode/components/mumu-getQrcode/jsQR.js
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File diff suppressed because it is too large
Load Diff
@ -0,0 +1,436 @@
|
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<template>
|
||||
<view class="canvasBox">
|
||||
<template v-if="isUse">
|
||||
<view class="box">
|
||||
<view class="line"></view>
|
||||
<view class="angle"></view>
|
||||
</view>
|
||||
<view class="box2" v-if="isUseTorch">
|
||||
<view class="track" @click="openTrack">
|
||||
<svg
|
||||
t="1653920715959"
|
||||
class="icon"
|
||||
viewBox="0 0 1024 1024"
|
||||
version="1.1"
|
||||
xmlns="http://www.w3.org/2000/svg"
|
||||
p-id="1351"
|
||||
width="32"
|
||||
height="32"
|
||||
>
|
||||
<path
|
||||
d="M651.353043 550.479503H378.752795L240.862609 364.315031c-3.688944-4.897391-5.660621-10.876025-5.660621-17.045466v-60.040745c0-15.773416 12.847702-28.621118 28.621118-28.621118h502.459627c15.773416 0 28.621118 12.847702 28.621118 28.621118v59.977143c0 6.105839-1.971677 12.084472-5.660621 17.045466l-137.890187 186.228074zM378.752795 598.308571v398.024348c0 15.328199 12.402484 27.667081 27.667081 27.667081h217.266087c15.328199 0 27.667081-12.402484 27.66708-27.667081V598.308571H378.752795z m136.300124 176.942112c-14.564969 0-26.331429-11.76646-26.331428-26.331428v-81.283975c0-14.564969 11.76646-26.331429 26.331428-26.331429 14.564969 0 26.331429 11.76646 26.331429 26.331429v81.283975c0 14.564969-11.76646 26.331429-26.331429 26.331428zM512 222.608696c-17.554286 0-31.801242-14.246957-31.801242-31.801243V31.801242c0-17.554286 14.246957-31.801242 31.801242-31.801242s31.801242 14.246957 31.801242 31.801242v159.006211c0 17.554286-14.246957 31.801242-31.801242 31.801243zM280.932174 205.881242c-9.47677 0-18.889938-4.197764-25.122981-12.275279L158.242981 67.991056a31.864845 31.864845 0 0 1 5.597019-44.648944 31.864845 31.864845 0 0 1 44.648944 5.597018l97.502609 125.551305a31.864845 31.864845 0 0 1-5.597019 44.648944c-5.787826 4.579379-12.656894 6.741863-19.46236 6.741863zM723.987081 205.881242c-6.805466 0-13.674534-2.162484-19.462361-6.678261a31.794882 31.794882 0 0 1-5.597018-44.648944l97.566211-125.551304a31.794882 31.794882 0 0 1 44.648944-5.597019 31.794882 31.794882 0 0 1 5.597019 44.648944l-97.566211 125.551305c-6.360248 8.077516-15.709814 12.27528-25.186584 12.275279z"
|
||||
fill="#ffffff"
|
||||
p-id="1352"
|
||||
></path>
|
||||
</svg>
|
||||
{{ trackStatus ? '关闭闪光灯' : '打开闪光灯' }}
|
||||
</view>
|
||||
</view>
|
||||
|
||||
<view class="mask1 mask" :style="'height:' + maskHeight + 'px;'"></view>
|
||||
<view
|
||||
class="mask2 mask"
|
||||
:style="'width:' + maskWidth + 'px;top:' + maskHeight + 'px;height:' + canvasHeight + 'px'"
|
||||
></view>
|
||||
<view class="mask3 mask" :style="'height:' + maskHeight + 'px;'"></view>
|
||||
<view
|
||||
class="mask4 mask"
|
||||
:style="'width:' + maskWidth + 'px;top:' + maskHeight + 'px;height:' + canvasHeight + 'px'"
|
||||
></view>
|
||||
</template>
|
||||
<template v-else>
|
||||
<slot name="error">
|
||||
<view class="error">
|
||||
<view class="on1">相机权限被拒绝，请尝试如下操作：</view>
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||||
<view>· 刷新页面后重试；</view>
|
||||
<view>· 在系统中检测当前App或浏览器的相机权限是否被禁用；</view>
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||||
<view>· 如果依然不能体验，建议在微信中打开链接；</view>
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||||
</view>
|
||||
</slot>
|
||||
</template>
|
||||
</view>
|
||||
</template>
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||||
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||||
<script>
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import jsQR from './jsQR.js'
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export default {
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||||
props: {
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||||
continue: {
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||||
type: Boolean,
|
||||
default: false // false 监听一次 true 持续监听
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||||
},
|
||||
exact: {
|
||||
type: String,
|
||||
default: 'environment' // environment 后摄像头 user 前摄像头
|
||||
},
|
||||
size: {
|
||||
type: String,
|
||||
default: 'whole' // whole 全屏 balf 半屏
|
||||
},
|
||||
definition: {
|
||||
type: Boolean,
|
||||
default: false // fasle 正常 true 高清
|
||||
}
|
||||
},
|
||||
data() {
|
||||
return {
|
||||
windowWidth: 0,
|
||||
windowHeight: 0,
|
||||
video: null,
|
||||
canvas2d: null,
|
||||
canvas2d2: null,
|
||||
canvasWidth: 200,
|
||||
canvasHeight: 200,
|
||||
maskWidth: 0,
|
||||
maskHeight: 0,
|
||||
inter: 0,
|
||||
|
||||
track: null,
|
||||
isUseTorch: false,
|
||||
trackStatus: false,
|
||||
|
||||
isParse: false,
|
||||
isUse: true
|
||||
}
|
||||
},
|
||||
mounted() {
|
||||
if (origin.indexOf('https') === -1) throw '请在 https 环境中使用摄像头组件。'
|
||||
|
||||
this.windowWidth = document.documentElement.clientWidth || document.body.clientWidth
|
||||
this.windowHeight = document.documentElement.clientHeight || document.body.clientHeight
|
||||
this.windowHeight = this.size === 'whole' ? this.windowHeight : this.windowHeight / 2
|
||||
this.isParse = true
|
||||
|
||||
this.$nextTick(() => {
|
||||
this.createMsk()
|
||||
this.openScan()
|
||||
})
|
||||
},
|
||||
destroyed() {
|
||||
this.closeCamera()
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||||
},
|
||||
methods: {
|
||||
openScan() {
|
||||
const width = this.transtion(this.windowHeight)
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||||
const height = this.transtion(this.windowWidth)
|
||||
const videoParam = {
|
||||
audio: false,
|
||||
video: {
|
||||
facingMode: { exact: this.exact },
|
||||
width,
|
||||
height
|
||||
}
|
||||
}
|
||||
navigator.mediaDevices
|
||||
.getUserMedia(videoParam)
|
||||
.then(stream => {
|
||||
this.video = document.createElement('video')
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||||
this.video.width = this.windowWidth
|
||||
this.video.height = this.windowHeight
|
||||
|
||||
const canvas = document.createElement('canvas')
|
||||
canvas.id = 'canvas'
|
||||
canvas.width = this.transtion(this.canvasWidth)
|
||||
canvas.height = this.transtion(this.canvasHeight)
|
||||
canvas.style = 'display:none;'
|
||||
//canvas.style = 'position: fixed;top: 0;z-index: 999;left:0'
|
||||
this.canvas2d = canvas.getContext('2d')
|
||||
|
||||
// 设置当前宽高 满屏
|
||||
const canvasBox = document.querySelector('.canvasBox')
|
||||
canvasBox.append(this.video)
|
||||
canvasBox.append(canvas)
|
||||
canvasBox.style = `width:${this.windowWidth}px;height:${this.windowHeight}px;`
|
||||
|
||||
// 创建第二个canvas
|
||||
const canvas2 = document.createElement('canvas')
|
||||
canvas2.id = 'canvas2'
|
||||
canvas2.width = this.canvasWidth
|
||||
canvas2.height = this.canvasHeight
|
||||
canvas2.style = 'position: absolute;top: 50%;left: 50%;z-index: 20;transform: translate(-50%, -50%);'
|
||||
this.canvas2d2 = canvas2.getContext('2d')
|
||||
canvasBox.append(canvas2)
|
||||
|
||||
this.video.srcObject = stream
|
||||
this.video.setAttribute('playsinline', true)
|
||||
this.video.play()
|
||||
this.tick()
|
||||
|
||||
this.track = stream.getVideoTracks()[0]
|
||||
setTimeout(() => {
|
||||
this.isUseTorch = this.track.getCapabilities().torch || null
|
||||
}, 500)
|
||||
})
|
||||
.catch(err => {
|
||||
this.isUse = false
|
||||
this.$emit('error', err)
|
||||
})
|
||||
},
|
||||
|
||||
closeCamera() {
|
||||
this.isParse = false
|
||||
if (this.video && this.video.srcObject) {
|
||||
this.video.srcObject.getTracks().forEach(track => {
|
||||
track.stop()
|
||||
})
|
||||
}
|
||||
},
|
||||
|
||||
tick() {
|
||||
if (!this.isParse) return
|
||||
if (this.video.readyState === this.video.HAVE_ENOUGH_DATA) {
|
||||
this.canvas2d.drawImage(
|
||||
this.video,
|
||||
this.transtion(this.maskWidth),
|
||||
this.transtion(this.maskHeight),
|
||||
this.transtion(200),
|
||||
this.transtion(200),
|
||||
0,
|
||||
0,
|
||||
this.transtion(this.canvasWidth),
|
||||
this.transtion(this.canvasHeight)
|
||||
)
|
||||
|
||||
const imageData = this.canvas2d.getImageData(
|
||||
0,
|
||||
0,
|
||||
this.transtion(this.canvasWidth),
|
||||
this.transtion(this.canvasHeight)
|
||||
)
|
||||
|
||||
const code = jsQR(imageData.data, imageData.width, imageData.height, {
|
||||
inversionAttempts: 'dontInvert'
|
||||
})
|
||||
|
||||
this.canvas2d2.clearRect(0, 0, this.canvasWidth, this.canvasHeight)
|
||||
if (code) {
|
||||
this.drawLine(code.location.topLeftCorner, code.location.topRightCorner)
|
||||
this.drawLine(code.location.topRightCorner, code.location.bottomRightCorner)
|
||||
this.drawLine(code.location.bottomRightCorner, code.location.bottomLeftCorner)
|
||||
this.drawLine(code.location.bottomLeftCorner, code.location.topLeftCorner)
|
||||
if (code.data) {
|
||||
this.getData(code.data)
|
||||
}
|
||||
}
|
||||
}
|
||||
requestAnimationFrame(this.tick)
|
||||
},
|
||||
drawLine(begin, end, color = '#FF3B58') {
|
||||
this.canvas2d2.beginPath()
|
||||
this.canvas2d2.moveTo(this.nutranstion(begin.x), this.nutranstion(begin.y))
|
||||
this.canvas2d2.lineTo(this.nutranstion(end.x), this.nutranstion(end.y))
|
||||
this.canvas2d2.lineWidth = 4
|
||||
this.canvas2d2.strokeStyle = color
|
||||
this.canvas2d2.stroke()
|
||||
},
|
||||
|
||||
getData(data) {
|
||||
this.$emit('success', data)
|
||||
if (!this.continue) {
|
||||
this.closeCamera()
|
||||
}
|
||||
},
|
||||
|
||||
openTrack() {
|
||||
this.trackStatus = !this.trackStatus
|
||||
this.track.applyConstraints({
|
||||
advanced: [{ torch: this.trackStatus }]
|
||||
})
|
||||
},
|
||||
|
||||
createMsk() {
|
||||
this.maskWidth = this.windowWidth / 2 - this.canvasWidth / 2
|
||||
this.maskHeight = this.windowHeight / 2 - this.canvasHeight / 2
|
||||
},
|
||||
|
||||
transtion(number) {
|
||||
return this.definition ? number * 2.8 : number * 1.8
|
||||
},
|
||||
nutranstion(number) {
|
||||
return this.definition ? number / 2.8 : number / 1.8
|
||||
}
|
||||
}
|
||||
}
|
||||
</script>
|
||||
|
||||
<style scoped>
|
||||
page {
|
||||
background-color: #333333;
|
||||
}
|
||||
|
||||
.canvasBox {
|
||||
width: 100vw;
|
||||
height: 100vh;
|
||||
position: relative;
|
||||
|
||||
background-image: linear-gradient(
|
||||
0deg,
|
||||
transparent 24%,
|
||||
rgba(32, 255, 77, 0.1) 25%,
|
||||
rgba(32, 255, 77, 0.1) 26%,
|
||||
transparent 27%,
|
||||
transparent 74%,
|
||||
rgba(32, 255, 77, 0.1) 75%,
|
||||
rgba(32, 255, 77, 0.1) 76%,
|
||||
transparent 77%,
|
||||
transparent
|
||||
),
|
||||
linear-gradient(
|
||||
90deg,
|
||||
transparent 24%,
|
||||
rgba(32, 255, 77, 0.1) 25%,
|
||||
rgba(32, 255, 77, 0.1) 26%,
|
||||
transparent 27%,
|
||||
transparent 74%,
|
||||
rgba(32, 255, 77, 0.1) 75%,
|
||||
rgba(32, 255, 77, 0.1) 76%,
|
||||
transparent 77%,
|
||||
transparent
|
||||
);
|
||||
background-size: 3rem 3rem;
|
||||
background-position: -1rem -1rem;
|
||||
z-index: 10;
|
||||
background-color: #1110;
|
||||
}
|
||||
|
||||
.box {
|
||||
width: 200px;
|
||||
height: 200px;
|
||||
position: absolute;
|
||||
left: 50%;
|
||||
top: 50%;
|
||||
transform: translate(-50%, -50%);
|
||||
overflow: hidden;
|
||||
border: 0.1rem solid rgba(0, 255, 51, 0.2);
|
||||
z-index: 11;
|
||||
}
|
||||
|
||||
.line {
|
||||
height: calc(100% - 2px);
|
||||
width: 100%;
|
||||
background: linear-gradient(180deg, rgba(0, 255, 51, 0) 43%, #00ff33 211%);
|
||||
border-bottom: 3px solid #00ff33;
|
||||
transform: translateY(-100%);
|
||||
animation: radar-beam 2s infinite alternate;
|
||||
animation-timing-function: cubic-bezier(0.53, 0, 0.43, 0.99);
|
||||
animation-delay: 1.4s;
|
||||
}
|
||||
|
||||
.box:after,
|
||||
.box:before,
|
||||
.angle:after,
|
||||
.angle:before {
|
||||
content: '';
|
||||
display: block;
|
||||
position: absolute;
|
||||
width: 3vw;
|
||||
height: 3vw;
|
||||
z-index: 12;
|
||||
border: 0.2rem solid transparent;
|
||||
}
|
||||
|
||||
.box:after,
|
||||
.box:before {
|
||||
top: 0;
|
||||
border-top-color: #00ff33;
|
||||
}
|
||||
|
||||
.angle:after,
|
||||
.angle:before {
|
||||
bottom: 0;
|
||||
border-bottom-color: #00ff33;
|
||||
}
|
||||
|
||||
.box:before,
|
||||
.angle:before {
|
||||
left: 0;
|
||||
border-left-color: #00ff33;
|
||||
}
|
||||
|
||||
.box:after,
|
||||
.angle:after {
|
||||
right: 0;
|
||||
border-right-color: #00ff33;
|
||||
}
|
||||
|
||||
@keyframes radar-beam {
|
||||
0% {
|
||||
transform: translateY(-100%);
|
||||
}
|
||||
|
||||
100% {
|
||||
transform: translateY(0);
|
||||
}
|
||||
}
|
||||
|
||||
.msg {
|
||||
text-align: center;
|
||||
padding: 20rpx 0;
|
||||
}
|
||||
|
||||
.box2 {
|
||||
width: 300px;
|
||||
height: 200px;
|
||||
position: absolute;
|
||||
left: 50%;
|
||||
top: 50%;
|
||||
transform: translate(-50%, -50%);
|
||||
z-index: 20;
|
||||
}
|
||||
|
||||
.track {
|
||||
position: absolute;
|
||||
bottom: -100px;
|
||||
left: 50%;
|
||||
transform: translateX(-50%);
|
||||
z-index: 20;
|
||||
color: #fff;
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
align-items: center;
|
||||
}
|
||||
|
||||
.mask {
|
||||
position: absolute;
|
||||
z-index: 10;
|
||||
background-color: rgba(0, 0, 0, 0.55);
|
||||
}
|
||||
|
||||
.mask1 {
|
||||
top: 0;
|
||||
left: 0;
|
||||
right: 0;
|
||||
}
|
||||
|
||||
.mask2 {
|
||||
right: 0;
|
||||
}
|
||||
|
||||
.mask3 {
|
||||
right: 0;
|
||||
left: 0;
|
||||
bottom: 0;
|
||||
}
|
||||
|
||||
.mask4 {
|
||||
left: 0;
|
||||
}
|
||||
|
||||
.error {
|
||||
color: #fff;
|
||||
padding: 40rpx;
|
||||
font-size: 24rpx;
|
||||
background-color: #333333;
|
||||
position: fixed;
|
||||
top: 50%;
|
||||
left: 50%;
|
||||
transform: translate(-50%, -50%);
|
||||
width: 550rpx;
|
||||
border-radius: 20rpx;
|
||||
}
|
||||
|
||||
.error .on1 {
|
||||
font-size: 30rpx;
|
||||
}
|
||||
</style>
|
||||
83
pos-uni/uni_modules/mumu-getQrcode/package.json
Normal file
83
pos-uni/uni_modules/mumu-getQrcode/package.json
Normal file
@ -0,0 +1,83 @@
|
||||
{
|
||||
"id": "mumu-getQrcode",
|
||||
"displayName": "H5调用摄像头识别二维码（原生H5调用，不需要任何sdk，本地扫描识别，不需要后端）",
|
||||
"version": "1.3.0",
|
||||
"description": "在浏览器中调用手机摄像头进行扫码，无须任何sdk，支持市面上绝大部分手机。在安卓系统上可以打开闪光灯",
|
||||
"keywords": [
|
||||
"h5扫码",
|
||||
"原生H5调用摄像头",
|
||||
"二维码",
|
||||
"闪光灯"
|
||||
],
|
||||
"repository": "",
|
||||
"engines": {
|
||||
"HBuilderX": "^3.1.0"
|
||||
},
|
||||
"dcloudext": {
|
||||
"category": [
|
||||
"前端组件",
|
||||
"通用组件"
|
||||
],
|
||||
"sale": {
|
||||
"regular": {
|
||||
"price": "4.55"
|
||||
},
|
||||
"sourcecode": {
|
||||
"price": "30.00"
|
||||
}
|
||||
},
|
||||
"contact": {
|
||||
"qq": "1139027508"
|
||||
},
|
||||
"declaration": {
|
||||
"ads": "无",
|
||||
"data": "无",
|
||||
"permissions": "摄像头"
|
||||
},
|
||||
"npmurl": ""
|
||||
},
|
||||
"uni_modules": {
|
||||
"dependencies": [],
|
||||
"encrypt": [],
|
||||
"platforms": {
|
||||
"cloud": {
|
||||
"tcb": "y",
|
||||
"aliyun": "y"
|
||||
},
|
||||
"client": {
|
||||
"Vue": {
|
||||
"vue2": "y",
|
||||
"vue3": "y"
|
||||
},
|
||||
"App": {
|
||||
"app-vue": "n",
|
||||
"app-nvue": "n"
|
||||
},
|
||||
"H5-mobile": {
|
||||
"Safari": "y",
|
||||
"Android Browser": "y",
|
||||
"微信浏览器(Android)": "y",
|
||||
"QQ浏览器(Android)": "y"
|
||||
},
|
||||
"H5-pc": {
|
||||
"Chrome": "n",
|
||||
"IE": "n",
|
||||
"Edge": "n",
|
||||
"Firefox": "n",
|
||||
"Safari": "n"
|
||||
},
|
||||
"小程序": {
|
||||
"微信": "n",
|
||||
"阿里": "n",
|
||||
"百度": "n",
|
||||
"字节跳动": "n",
|
||||
"QQ": "n"
|
||||
},
|
||||
"快应用": {
|
||||
"华为": "u",
|
||||
"联盟": "u"
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
137
pos-uni/uni_modules/mumu-getQrcode/readme.md
Normal file
137
pos-uni/uni_modules/mumu-getQrcode/readme.md
Normal file
@ -0,0 +1,137 @@
|
||||
## 插件简绍
|
||||
### 实现原理
|
||||
|
||||
> 二维码识别功能使用的是jsQR这个库，调用摄像头使用的 navigator.mediaDevices.getUserMedia 这个H5的api。通过canvas画布把摄像头获取到的数据展现到页面上，同时循环监听jsQR解析。
|
||||
|
||||
|
||||
### 使用环境
|
||||
经测试发现大部分浏览器都可以正常使用（微信，QQ，谷歌，火狐，safari），少数的安卓自带浏览器无法使用（浏览器内核版本过低）。需要https环境才能使用，本地测试可以在 manifest.json 中点击源码展示，找到h5 ，添加："devServer" : { "https" : true}
|
||||
|
||||
需要https环境才能使用！！！
|
||||
|
||||
需要https环境才能使用！！！
|
||||
|
||||
需要https环境才能使用！！！
|
||||
|
||||
**小知识点：苹果设备上不论什么浏览器都是safari套壳的，不论是谷歌还是火狐都是safari套壳。这也就是代表在苹果上无需担心无法使用此插件。（造成这样的现象是因为苹果有一则协议，浏览器只能使用safari内核）**
|
||||
|
||||
在安卓系统上可以打开闪光灯
|
||||
|
||||
#### 通过脚手架创建的 uni 项目，需要看这里
|
||||
|
||||
如果你是通过脚手架创建的 uni 的项目，需要自行安装 `jsQR` 依赖，并且修改组件中源码中的引入。通过 HBuilder 创建的项目不需要此操作。
|
||||
|
||||
```bash
|
||||
# 安装 jsQR
|
||||
npm install jsqr --save
|
||||
# 修改组件源码对 jsQR 依赖
|
||||
import jsQR from "jsqr"
|
||||
```
|
||||
|
||||
|
||||
|
||||
### 插件使用
|
||||
**插件已支持 uni_modules 支持组件easycom，以下代码演示的是普通使用**
|
||||
|
||||
``` html
|
||||
<!-- HTML -->
|
||||
<mumu-get-qrcode @success='qrcodeSucess' @error="qrcodeError" ></mumu-get-qrcode>
|
||||
```
|
||||
|
||||
``` javascript
|
||||
// js
|
||||
import mumuGetQrcode from '@/uni_modules/mumu-getQrcode/components/mumu-getQrcode/mumu-getQrcode.vue'
|
||||
// 嫌路径长的话可以单独复制出来
|
||||
export default {
|
||||
components: {
|
||||
mumuGetQrcode
|
||||
},
|
||||
methods: {
|
||||
qrcodeSucess(data) {
|
||||
uni.showModal({
|
||||
title: '成功',
|
||||
content: data,
|
||||
success: () => {
|
||||
uni.navigateBack({})
|
||||
}
|
||||
})
|
||||
},
|
||||
qrcodeError(err) {
|
||||
console.log(err)
|
||||
uni.showModal({
|
||||
title: '摄像头授权失败',
|
||||
content: '摄像头授权失败，请检测当前浏览器是否有摄像头权限。',
|
||||
success: () => {
|
||||
uni.navigateBack({})
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
### 相关API
|
||||
|
||||
##### 可传属性（Props）
|
||||
|
||||
| 参数 | 说明 | 类型 | 默认值 |
|
||||
| ---------- | ------------------------------------------------- | ------- | ----------- |
|
||||
| continue | 是否连续获取。false 监听一次 true 持续监听 | Boolean | false |
|
||||
| exact | 选调用摄像头。environment 后摄像头 user 前摄像头 | String | environment |
|
||||
| size | 扫码屏幕大小。whole 全屏 balf 半屏 | String | whole |
|
||||
| definition | 调用摄像头清晰度。fasle 正常 true 高清 | Boolean | false |
|
||||
|
||||
|
||||
|
||||
##### 事件（Events）
|
||||
|
||||
| 事件名 | 说明 | 回调参数 |
|
||||
| ------- | ------------------------------------------ | ------------------ |
|
||||
| success | 检测到图中有二维码并读取到数据是回调 | 二维码数据 |
|
||||
| error | 组件内部发送错误，通常是摄像头没有调用成功 | 错误信息，详情见下 |
|
||||
|
||||
**常见的错误信息：**
|
||||
|
||||
- `AbortError`［中止错误］
|
||||
|
||||
尽管用户和操作系统都授予了访问设备硬件的权利，而且未出现可能抛出`NotReadableError`异常的硬件问题，但仍然有一些问题的出现导致了设备无法被使用。
|
||||
|
||||
- `NotAllowedError`［拒绝错误］
|
||||
|
||||
用户拒绝了当前的浏览器实例的访问请求；或者用户拒绝了当前会话的访问；或者用户在全局范围内拒绝了所有媒体访问请求。
|
||||
|
||||
- `NotFoundError`［找不到错误］
|
||||
|
||||
找不到满足请求参数的媒体类型。
|
||||
|
||||
- `NotReadableError`［无法读取错误］
|
||||
|
||||
尽管用户已经授权使用相应的设备，操作系统上某个硬件、浏览器或者网页层面发生的错误导致设备无法被访问。
|
||||
|
||||
- `OverconstrainedError`［无法满足要求错误］
|
||||
|
||||
指定的要求无法被设备满足，此异常是一个类型为`OverconstrainedError`的对象，拥有一个`constraint`属性，这个属性包含了当前无法被满足的`constraint`对象，还拥有一个`message`属性，包含了阅读友好的字符串用来说明情况。
|
||||
|
||||
- `SecurityError`［安全错误］
|
||||
|
||||
在`getUserMedia()` 被调用的 [`Document`](https://developer.mozilla.org/zh-CN/docs/Web/API/Document) 上面，使用设备媒体被禁止。这个机制是否开启或者关闭取决于单个用户的偏好设置。
|
||||
|
||||
- `TypeError`［类型错误］
|
||||
|
||||
constraints 对象未设置［空］，或者都被设置为`false`。
|
||||
|
||||
|
||||
|
||||
##### 插槽 （slot）
|
||||
|
||||
| 插槽名称 | 说明 | 默认值 |
|
||||
| -------- | -------------------------------- | ------------------ |
|
||||
| error | 当发送错误时，在页面上显示的内容 | 相机权限被拒绝提示 |
|
||||
|
||||
|
||||
|
||||
### 案例演示
|
||||
|
||||
|
||||
|
||||
## 支持作者
|
||||
|
||||
Loading…
Reference in New Issue
Block a user