由于要给一个客户做一个记账WAP，里面有调用手机拍照功能，这里记录一下，以供需要的朋友，下面是完整的一个HTML页面内容，放在服务器上然后浏览就可以了，只支持Chrome和Safari核的浏览器，我测试过QQ浏览器，Chrome，Safari浏览器都可以。在不同的手机和浏览器上面展现的方式不一样。
<!DOCTYPE HTML> <html> <head> <title>上传图片</title> <meta charset="utf-8"> </head> <body> <iframe name="uploadfrm" id="uploadfrm" style="display: none;"></iframe> <form name="formHead" method="post" action="" id="formHead" enctype="multipart/form-data" target="uploadfrm"> <div> <div> <input type="file" name="file_head" id="file_head" οnchange="javascript:setImagePreview();" /> </div> <div> <div id="DivUp" style="display: none"> <input type="submit" data-inline="true" id="BtnUp" value="确认上传" data-mini="true" /> </div> </div> </div> </form> <div data-role="fieldcontain"> <div id="localImag"> <img id="preview" width="-1" height="-1" style="display: none" /> </div> </div> <script type="text/javascript"> function setImagePreview() { var preview, img_txt, localImag, file_head = document.getElementById("file_head"), picture = file_head.value; if (!picture.match(/.jpg|.gif|.png|.bmp/i)) return alert("您上传的图片格式不正确，请重新选择！"), !1; if (preview = document.getElementById("preview"), file_head.files && file_head.files[0]) preview.style.display = "block", preview.style.width = "63px", preview.style.height = "63px", preview.src = window.navigator.userAgent.indexOf("Chrome") >= 1 || window.navigator.userAgent.indexOf("Safari") >= 1 ? window.webkitURL.createObjectURL(file_head.files[0]) : window.URL.createObjectURL(file_head.files[0]); else { file_head.select(), file_head.blur(), img_txt = document.selection.createRange().text, localImag = document.getElementById("localImag"), localImag.style.width = "63px", localImag.style.height = "63px"; try { localImag.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale)", localImag.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = img_txt } catch(f) { return alert("您上传的图片格式不正确，请重新选择！"), !1 } preview.style.display = "none", document.selection.empty() } return document.getElementById("DivUp").style.display = "block", !0 } </script> </body> </html>
<video id="video" controls="controls" width="80%" heigth="80%" autoplay="" ></video>
<div><button id='picture' style=" 100%;">PICTURE</button></div>
<canvas id="canvas" width="640" height="480"></canvas>
<script type="text/javascript">
var video = document.getElementById("video");
var context = canvas.getContext("2d");
var errocb = function () {
console.log('sth wrong!');
}
if (navigator.getUserMedia) { // 标准的API
navigator.getUserMedia({ "video": true }, function (stream) {
video.src = stream;
video.play();
}, errocb);
} else if (navigator.webkitGetUserMedia) { // WebKit 核心的API
navigator.webkitGetUserMedia({ "video": true }, function (stream) {
video.src = window.webkitURL.createObjectURL(stream);
video.play();
}, errocb);
}
document.getElementById("picture").addEventListener("click", function () {
context.drawImage(video, 0, 0, 640, 480);
});
</script>
https://bbs.csdn.net/topics/391879845
