Web调用安卓，苹果手机摄像头，本地图片和文件

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="width: 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

posted @ 2019-08-16 10:05  临沂东哥  阅读(460)  评论(0)  编辑  收藏  举报