HTML5 Plus 实现手机APP拍照或相册选择图片上传功能
(编辑:jimmy 日期: 2024/11/2 浏览:3 次 )
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。
XML/HTML Code复制内容到剪贴板- <!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>
- <div class="content">
- <div style="margin-top: 10px;"></div>
- <input type="hidden" id="ckjl.id" name="ckjl.id" value="429">
- <div class="collapse-content" >
- <form>
- <label class="row-label"></label>
- <div id='F_CKJLBS' class="row image-list">
- <div class="image-item " id="F_CKJLB" onclick="showActionSheet(this);"></div>
- </div>
- </form>
- </div>
- </div>
- <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 +='<div 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 +=' <div class="fa fa-times-circle"></div>';
- html +=' </span>';
- html +='</div>';
- $("#"+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 divid = 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(divid);
- }else if(e.index==2){
- galleryImg(divid);
- }
- } );
- }
- //相册选取图片
- function galleryImg(divid) {
- 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,divid);
- }, 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(divid) {
- 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,divid);
- }, 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,divid){
- var name="_doc/upload/"+divid+"-"+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,divid);
- 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,divid,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} divid 字段的名称
- * @param {Object} name 图片的名称
- */
- function saveimage(url,divid,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-"+divid;//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,divid,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>
效果图:
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。
原文链接:http://blog.csdn.net/qq_27626333/article/details/51896616
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