这篇文章主要为大家详细介绍了html5 plus的camera、galleryio、storage和uploader，实现手机app拍照或相册选择图片上传功能的相关资料，感兴趣的小伙伴们可以参考一下
利用html plus的camera、galleryio、storage和uploader来实现手机app拍照或者从相册选择图片上传。camera模块管理设备的摄像头，可用于拍照、摄像操作，通过plus.camera获取摄像头管理对象。gallery模块管理系统相册，支持从相册中选择图片或视频文件、保存图片或视频文件到相册等功能。通过plus.gallery获取相册管理对象。io模块管理本地文件系统，用于对文件系统的目录浏览、文件的读取、文件的写入等操作。通过plus.io可获取文件系统管理对象。storage模块管理应用本地数据存储区，用于应用数据的保存和读取。应用本地数据与localstorage、sessionstorage的区别在于数据有效域不同，前者可在应用内跨域操作，数据存储期是持久化的，并且没有容量限制。通过plus.storage可获取应用本地数据管理对象。uploader模块管理网络上传任务，用于从本地上传各种文件到服务器，并支持跨域访问操作。通过plus.uploader可获取上传管理对象。uploader上传使用http的post方式提交数据，数据格式符合multipart/form-data规范，即rfc1867（form-based file upload in html）协议。
<!doctype html> <html class="feedback"> <head> <meta charset="utf-8" /> <meta name="viewport" content="width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=no" /> <meta name="misapplication-tap-highlight" content="no" /> <meta name="handheldfriendly" content="true" /> <meta name="mobileoptimized" content="320" /> <title>html5 plus 拍照或者相册选择图片上传</title> <link rel="stylesheet" href="../../css/mui.min.css"> <link rel="stylesheet" type="text/css" href="../../css/app.css" /> <link rel="stylesheet" type="text/css" href="../../css/iconfont.css" /> <link rel="stylesheet" type="text/css" href="../../css/feedback-page.css" /> <link rel="stylesheet" href="../../css/font-awesome.min.css"> <script src="../../js/jquery.js"></script> <script type="text/javascript" src="../../js/common.js"></script> <script type="text/javascript" src="../../js/utitls.js"></script> <script type="text/javascript" src="http://api.map.baidu.com/api?ak=59pbaeoro16cih2w4cg81zen&v=2.0"></script> <style type="text/css"> .del { position: absolute; top:1px; right: 1px; display: block; line-height: 1; cursor: pointer; color:#fff; } .del:hover { color:#ff3333; } </style> <style> .table-view { position: relative; margin-top: 0; margin-bottom: 0; padding-left: 0; list-style: none; background-color: #f5f5f5; } .table-view-cell { position: relative; overflow: hidden; padding: 0px 15px; -webkit-touch-callout: none; margin-bottom: 1px; } .table-view-cell:after { position: absolute; right: 0; bottom: 0; left: 0px; height: 1px; content: ''; -webkit-transform: scaley(.5); transform: scaley(.5); background-color: #c8c7cc; } .table-view-cell>a:not(.btn) { position: relative; display: block; overflow: hidden; margin: -0px -15px; padding: inherit; white-space: nowrap; text-overflow: ellipsis; color: inherit; background-color: #75b9f4; height: 40px; line-height: 40px; } .navigate-right:after { font-family: muiicons; font-size: inherit; line-height: 1; position: absolute; top: 50%; display: inline-block; -webkit-transform: translatey(-50%); transform: translatey(-50%); text-decoration: none; color: #666; -webkit-font-smoothing: antialiased; } .table-view-cell.collapse .collapse-content { position: relative; display: none; overflow: hidden; margin: 0px -15px 0px; padding: 0px 0px !important; -webkit-transition: height .35s ease; -o-transition: height .35s ease; transition: height .35s ease; background-color: transparent; } .image-item{ position: relative; } .image-item .info{ position: absolute; top:0px; left:4px; color: #ff9900; font-size: 12px; } </style> </head> <body> <header class="bar bar-nav"> <h1 class="title">拍照或者相册选择图片上传</h1> </header> <p class="content"> <p style="margin-top: 10px;"></p> <input type="hidden" id="ckjl.id" name="ckjl.id" value="429"> <p class="collapse-content" > <form> <label class="row-label"></label> <p id='f_ckjlbs' class="row image-list"> <p class="image-item " id="f_ckjlb" onclick="showactionsheet(this);"></p> </p> </form> </p> </p> <script src="../../js/mui.min.js"></script> <script> var procinstid = 0; //初始化页面执行操作 function plusready() { //android返回键监听事件 plus.key.addeventlistener('backbutton',function(){ myclose(); },false); } if (window.plus) { plusready(); } else { document.addeventlistener('plusready', plusready, false); } //加载页面初始化需要加载的图片信息 //或者相册img_20160704_112620.jpg //imgid:图片名称：1467602809090或者img_20160704_112620 //imgkey:字段例如：f_zddzz //id：站点编号id,例如429 //src：src="file:///storage/emulated/0/android/data/io.dcloud.hbuilder/.hbuilder/apps/hbuilder/doc/upload/f_zddzz-1467602809090.jpg" function showimgdetail (imgid,imgkey,id,src) { var html = ""; html +='<p id="img'+imgid+imgkey+'" class="image-item ">'; html +=' <img id="picbig" data-preview-src="" data-preview-group="1" '+src+'/>'; html +=' <span class="del" onclick="delimg(\''+imgid+'\',\''+imgkey+'\','+id+');">'; html +=' <p class="fa fa-times-circle"></p>'; html +=' </span>'; html +='</p>'; $("#"+imgkey+"s").append(html); } //删除图片 //imgid:图片名称：img_20160704_112614 //imgkey:字段，例如f_zddzz //id：站点编号id，例如429 function delimg(imgid,imgkey,id){ var bts = ["是", "否"]; plus.nativeui.confirm("是否删除图片？", function(e) { var i = e.index; if (i == 0) { var itemname=id+"img-"+imgkey;//429img-f_zddzz var itemvalue=plus.storage.getitem(itemname); //{img_20160704_112614,_doc/upload/f_zddzz-img_20160704_112614.jpg,file:///storage/emulated/0/android/data/io.dcloud...../doc/upload/f_zddzz-1467602809090.jpg} if(itemvalue!=null){ var index=itemvalue.indexof(imgid+","); if(index==-1){//没有找到 delimgfromint(imgid,imgkey,id,index); }else{ delimgfromlocal(itemname,itemvalue,imgid,imgkey,index); //修改，加了一个index参数 } }else{ delimgfromint(imgid,imgkey,id); } } },"查勘", bts); /*var isdel = confirm("是否删除图片？"); if(isdel == false){ return; }*/ } function delimgfromlocal(itemname,itemvalue,imgid,imgkey,index){ var wa = plus.nativeui.showwaiting(); var left=itemvalue.substr(0,index-1); var right=itemvalue.substring(index,itemvalue.length); var end=right.indexof("}"); rightright=right.substring(end+1,right.length); var newitem=left+right; plus.storage.setitem(itemname,newitem); myalert("删除成功"); $("#img"+imgid+imgkey).remove(); wa.close(); } //选取图片的来源，拍照和相册 function showactionsheet(conf){ var pid = conf.id; var actionbuttons=[{title:"拍照"},{title:"相册选取"}]; var actionstyle={title:"选择照片",cancel:"取消",buttons:actionbuttons}; plus.nativeui.actionsheet(actionstyle, function(e){ if(e.index==1){ getimage(pid); }else if(e.index==2){ galleryimg(pid); } } ); } //相册选取图片 function galleryimg(pid) { plus.gallery.pick( function(p){ //alert(p);//file:///storage/emulated/0/dcim/camera/img_20160704_112620.jpg plus.io.resolvelocalfilesystemurl(p, function(entry) { //alert(entry.tolocalurl());//file:///storage/emulated/0/dcim/camera/img_20160704_112620.jpg //alert(entry.name);//img_20160704_112620.jpg compressimage(entry.tolocalurl(),entry.name,pid); }, function(e) { plus.nativeui.toast("读取拍照文件错误：" + e.message); }); }, function ( e ) { }, { filename: "_doc/camera/", filter:"image" } ); } // 拍照 function getimage(pid) { var cmr = plus.camera.getcamera(); cmr.captureimage(function(p) { //alert(p);//_doc/camera/1467602809090.jpg plus.io.resolvelocalfilesystemurl(p, function(entry) { //alert(entry.tolocalurl());//file:///storage/emulated/0/android/data/io.dcloud...../doc/camera/1467602809090.jpg //alert(entry.name);//1467602809090.jpg compressimage(entry.tolocalurl(),entry.name,pid); }, function(e) { plus.nativeui.toast("读取拍照文件错误：" + e.message); }); }, function(e) { }, { filename: "_doc/camera/", index: 1 }); } //压缩图片 function compressimage(url,filename,pid){ var name="_doc/upload/"+pid+"-"+filename;//_doc/upload/f_zddzz-1467602809090.jpg plus.zip.compressimage({ src:url,//src: (string 类型 )压缩转换原始图片的路径 dst:name,//压缩转换目标图片的路径 quality:20,//quality: (number 类型 )压缩图片的质量.取值范围为1-100 overwrite:true//overwrite: (boolean 类型 )覆盖生成新文件 }, function(event) { //uploadf(event.target,pid); var path = name;//压缩转换目标图片的路径 //event.target获取压缩转换后的图片url路 //filename图片名称 saveimage(event.target,pid,filename,path); },function(error) { plus.nativeui.toast("压缩图片失败，请稍候再试"); }); } //保存信息到本地 /** * * @param {object} url 图片的地址 * @param {object} pid 字段的名称 * @param {object} name 图片的名称 */ function saveimage(url,pid,name,path){ //alert(url);//file:///storage/emulated/0/android/data/io.dcloud...../doc/upload/f_zddzz-1467602809090.jpg //alert(path);//_doc/upload/f_zddzz-1467602809090.jpg var state=0; var wt = plus.nativeui.showwaiting(); // plus.storage.clear(); namename=name.substring(0,name.indexof("."));//图片名称：1467602809090 var id = document.getelementbyid("ckjl.id").value; var itemname=id+"img-"+pid;//429img-f_zddz var itemvalue=plus.storage.getitem(itemname); if(itemvalue==null){ itemvalue="{"+name+","+path+","+url+"}";//{img_20160704_112614,_doc/upload/f_zddzz-img_20160704_112614.jpg,file:///storage/emulated/0/android/data/io.dcloud...../doc/upload/f_zddzz-1467602809090.jpg} }else{ itemvalueitemvalue=itemvalue+"{"+name+","+path+","+url+"}"; } plus.storage.setitem(itemname, itemvalue); var src = 'src="'+url+'"'; //alert("itemvalue="+itemvalue); showimgdetail(name,pid,id,src); wt.close(); } //上传图片，实例中没有添加上传按钮 function uploadimge(agree,back) { //plus.storage.clear(); var wa = plus.nativeui.showwaiting(); var dkeynames=[]; var id = document.getelementbyid("ckjl.id").value; var length=id.tostring().length; var ididnmae=id.tostring(); var numkeys=plus.storage.getlength(); var task = plus.uploader.createupload(geturl() + 'url', { method: "post" }, function(t, status) { if (status == 200) { console.log("上传成功"); $.ajax({ type: "post", url: geturl() + 'url', data: { taskid: taskid, voteagree: agree, back: back, votecontent: $("#assign").val(), }, async: true, datatype: "text", success: function(data) { wa.close(); golist(data); }, error: function() { wa.close(); myalert("网络错误，提交审批失败，请稍候再试"); } }); } else { wa.close(); console.log("上传失败"); } } ); task.adddata("id",id); for(var i=0; i<imgarray.length;i++){ var itemkey=id+"img-"+imgarray[i]; if(plus.storage.getitem(itemkey)!=null){ var itemvalue=plus.storage.getitem(itemkey).split("{"); for(var img=1;img<itemvalue.length;img++){ var imgname=itemvalue[img].substr(0,itemvalue[img].indexof(",")); var imgurl=itemvalue[img].substring(itemvalue[img].indexof(",")+1,itemvalue[img].lastindexof(",")); task.addfile(imgurl,{key:imgurl}); } } } task.start(); } </script> </body> </html>
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以上就是html5 plus 实现手机app拍照或相册选择图片上传的功能的详细内容。