详细问题描述
（DCloud产品不会有明显的bug，所以你遇到的问题大都是在特定环境下才能重现的问题，请仔细描述你的环境和重现方式，否则DCloud很难排查解决你的问题）
[内容]
重现步骤
window.navigator.getUserMedia = navigator.getUserMedia || navigator.mediaDevices.getUserMedia || navigator.webKitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia;
function invokingCarera() {
if(navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {
navigator.mediaDevices.getUserMedia({
'audio': true,
'video': {
'facingMode': "user"
} //调用前置摄像头，后置摄像头使用video: { facingMode: { exact: "environment" } }
})
.then(function(mediaStream) {
console.log(555);
getVideoStream(mediaStream)
})
.catch(function(error) {
console.log(666);
console.log(error)
alert(error)
})
} else if(navigator.getUserMedia) {
navigator.getUserMedia({
'video': true,
'audio': true
}, getVideoStream, getFail)
} else {
alert('不支持摄像头调用！')
}
}[步骤]
执行invokingCarera事件后调用到摄像头
[结果]
返回NotReadableError: Could not start audio source错误
[期望]
返回mediaStream
[如果语言难以表述清晰，拍一个视频或截图，有图有真相]
IDE运行环境说明
HBuilderX2.3.7
[IDE版本号]
[windows版本号]
[mac版本号]
uni-app运行环境说明
app
[运行端版本号]
HBuilderX创建的
自定义组件模式
App运行环境说明
[Android版本号]
8.1.0
[iOS版本号]
[手机型号]
[模拟器型号]
附件
[IDE问题请提供HBuilderX运行日志。菜单帮助-查看运行日志，点右键打开文件所在目录，将log文件压缩成zip包上传]
[App问题请提供可重现问题的代码片段，你补充的细一点，问题就解决的快一点]
[App安装包或H5地址]
[可重现代码片段]
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0,maximum-scale=1.0,minimum-scale=1.0,user-scalable=no">
<title>Document1</title>
<style type='text/css'>
* {
margin: 0;
padding: 0;
}
html,
body {
height: 100%;
}
.flex {
display: flex;
}
.flex-row {
flex-direction: row;
justify-content: space-around;
align-items: center;
}
.flex-column {
flex-direction: column;
justify-content: flex-start;
align-items: center;
}
body {
overflow: auto;
background: #fff;
}
.title {
width: 920px;
padding: 30px;
align-items: flex-end;
}
.title h1 {
padding-bottom: 20px;
font-size: 38px;
color: #ffffff;
text-shadow: 0 1px 3px #222222;
}
.title p {
font-size: 18px;
color: #f5f5f5;
text-shadow: 0 1px 3px #565656;
}
.wrap {
width: 1220px;
}
.wrap .reference {
position: relative;
padding: 10px;
background-color: rgba(255, 255, 255, 0);
border-radius: 10px;
box-shadow: 0 0 20px #a1a19f;
}
.wrap .reference img.face {
display: block;
width: 320px;
height: auto;
border-radius: 10px;
}
.wrap .reference img.toggle {
position: absolute;
right: 10px;
top: 10px;
width: 50px;
height: 50px;
}
.wrap .scan video {
background-color: rgba(0, 0, 0, .8);
border-radius: 10px;
}
.wrap .control {
justify-content: space-around;
height: 456px;
padding: 0 20px;
}
.wrap .control p {
width: 160px;
height: 60px;
background-color: #f9f9f9;
text-align: center;
line-height: 60px;
color: #ffffff;
font-size: 24px;
border-radius: 8px;
cursor: pointer;
box-shadow: -8px -8px 150px -8px #b2b3b5 inset, 0 0 5px #222222;
text-shadow: 0 0 1px #222222;
transition: .5s;
}
.wrap .control p:hover {
box-shadow: -8px -8px 150px -8px #50c4f1 inset, 0 0 5px #ffffff;
}
.wrap .scan {
position: relative;
overflow: hidden;
}
.wrap .scan .strainer {
position: absolute;
top: 10px;
width: 320px;
z-index: 999;
height: 3px;
}
.wrap .scan .capture {
width: 320px;
height: 456px;
}
.wrap .scan .strainer.on {
background: linear-gradient(to left, transparent, #0bffb2, transparent);
animation: scan 1s linear infinite;
}
@keyframes scan {
0% {
top: 10px;
}
50% {
top: 456px;
}
100% {
top: 10px;
}
}
</style>
<script type="text/javascript" src="vconsole.min.js"></script>
</head>
<body>
<div class="title flex flex-column">
</div>
<div class="wrap flex flex-row">
<div class="control flex flex-column">
<p class="open">开启摄像头</p>
<p class="recognition">显示到Canvas</p>
<p class="close">关闭摄像头</p>
</div>
<div class="scan reference">
<div class="strainer"></div>
<video class="capture" width="320" height="456" src=""></video>
</div>
</div>
<script type="text/javascript">
var buffer;
var oCapture = document.querySelector(".capture"),
open = document.querySelector(".open"),
recognition = document.querySelector(".recognition"),
close = document.querySelector(".close");
var control = document.querySelector(".control");
window.navigator.getUserMedia = navigator.getUserMedia || navigator.mediaDevices.getUserMedia || navigator.webKitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia;
function invokingCarera() {
if(navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {
navigator.mediaDevices.getUserMedia({
'audio': true,
'video': {
'facingMode': "user"
} //调用前置摄像头，后置摄像头使用video: { facingMode: { exact: "environment" } }
})
.then(function(mediaStream) {
console.log(555);
getVideoStream(mediaStream)
})
.catch(function(error) {
console.log(666);
console.log(error)
alert(error)
})
} else if(navigator.getUserMedia) {
navigator.getUserMedia({
'video': true,
'audio': true
}, getVideoStream, getFail)
} else {
alert('不支持摄像头调用！')
}
}
//调用成功
function getVideoStream(stream) {
buffer = stream;
if(oCapture.mozSrcObject !== undefined) {
oCapture.mozSrcObject = buffer;
} else {
oCapture.src = window.URL && window.URL.createObjectURL(buffer);
}
oCapture.play();
}
function getFail() {
}
recognition.onclick = function() {
}
control.addEventListener('click', function(e) {
e = e || window.event;
var className = e.target.className;
switch(className) {
case 'open':
invokingCarera();
break;
case 'close':
closeCamera();
break;
case 'recognition':
screenShot();
break;
default:
break;
}
})
function closeCamera() {
buffer && buffer.getTracks()[1].stop(); //关闭摄像头
}
window.requestAnimFrame = (function() {
return window.requestAnimationFrame ||
window.webkitRequestAnimationFrame ||
window.mozRequestAnimationFrame ||
function(callback) {
window.setTimeout(callback, 1000 / 60);
};
})();
function screenShot() {
var canvas = document.createElement('canvas');
canvas.width = 320, canvas.height = 456;
document.querySelector(".wrap").appendChild(canvas);
var ctx = canvas.getContext('2d');
function drawVideo() {
ctx.drawImage(oCapture, 0, 0, 320, 456);
ctx.font = "30px sans-serif";
ctx.fillStyle = "blue";
ctx.fillText("请眨眼", 50, 50);
requestAnimationFrame(drawVideo);
}
window.requestAnimationFrame(drawVideo);
}
</script>
</body>
</html>联系方式
[QQ] 1045247746
独孤求剑
为什么没有提示呢，能否实现像原生开发一样的打开权限提示并跳转到权限设置页?
2023-06-12 00:38