Web调用安卓，苹果手机摄像头，本地图片和文件

因为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。以供须要的朋友。以下是完整的一个HTML页面内容，放在server上然后浏览就能够了，仅仅支持Chrome和Safari核的浏览器。我測试过QQ浏览器，Chrome，Safari浏览器都能够。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" onchange="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对，请又一次选择！"),
			!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对，请又一次选择！"),
					!1
				}
				preview.style.display = "none",
				document.selection.empty()
			}
			return document.getElementById("DivUp").style.display = "block",
			!0
		}
    </script>
</body>
</html>

server端程序自己加，假设自己没有server也能够调用http://jwzhangjie.com/preview.html来做測试

以下是调用几个浏览器的測试效果：

Chrome浏览器效果：