HTML5 Plus 實現手機APP拍照或相冊選擇圖片上傳功能

2019-10-26 17:42:13

字體：大中小

來源：轉載

供稿：網友

利用HTML Plus的Camera、GalleryIO、Storage和Uploader來實現手機APP拍照或者從相冊選擇圖片上傳。Camera模塊管理設備的攝像頭，可用于拍照、攝像操作，通過plus.camera獲取攝像頭管理對象。Gallery模塊管理系統(tǒng)相冊，支持從相冊中選擇圖片或視頻文件、保存圖片或視頻文件到相冊等功能。通過plus.gallery獲取相冊管理對象。IO模塊管理本地文件系統(tǒng)，用于對文件系統(tǒng)的目錄瀏覽、文件的讀取、文件的寫入等操作。通過plus.io可獲取文件系統(tǒng)管理對象。Storage模塊管理應用本地數據存儲區(qū)，用于應用數據的保存和讀取。應用本地數據與localStorage、sessionStorage的區(qū)別在于數據有效域不同，前者可在應用內跨域操作，數據存儲期是持久化的，并且沒有容量限制。通過plus.storage可獲取應用本地數據管理對象。Uploader模塊管理網絡上傳任務，用于從本地上傳各種文件到服務器，并支持跨域訪問操作。通過plus.uploader可獲取上傳管理對象。Uploader上傳使用HTTP的POST方式提交數據，數據格式符合Multipart/form-data規(guī)范，即rfc1867（Form-based File Upload in HTML）協(xié)議。

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<!doctype html> <html class="feedback">
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<title>HTML5 Plus 拍照或者相冊選擇圖片上傳</title> <link rel="stylesheet" href="../../css/mui.min.css">
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<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">拍照或者相冊選擇圖片上傳</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; //初始化頁面執(zhí)行操作
function plusReady() { //Android返回鍵監(jiān)聽事件
plus.key.addEventListener('backbutton',function(){ myclose();
},false); }
if (window.plus) { plusReady();
} else { document.addEventListener('plusready', plusReady, false);
} //加載頁面初始化需要加載的圖片信息
//或者相冊IMG_20160704_112620.jpg //imgId:圖片名稱：1467602809090或者IMG_20160704_112620
//imgkey:字段例如：F_ZDDZZ //ID：站點編號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);
} //刪除圖片
//imgId:圖片名稱：IMG_20160704_112614 //imgkey:字段，例如F_ZDDZZ
//ID：站點編號ID，例如429 function delImg(imgId,imgkey,id){
var bts = ["是", "否"]; plus.nativeUI.confirm("是否刪除圖片？", 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){//沒有找到
delImgfromint(imgId,imgkey,id,index); }else{
delImgFromLocal(itemname,itemvalue,imgId,imgkey,index); //修改，加了一個index參數 }
}else{
delImgfromint(imgId,imgkey,id); }
} },"查勘", bts);
/*var isdel = confirm("是否刪除圖片？"); 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("刪除成功");
$("#Img"+imgId+imgkey).remove(); wa.close();
} //選取圖片的來源，拍照和相冊
function showActionSheet(conf){ var divid = conf.id;
var actionbuttons=[{title:"拍照"},{title:"相冊選取"}]; var actionstyle={title:"選擇照片",cancel:"取消",buttons:actionbuttons};
plus.nativeUI.actionSheet(actionstyle, function(e){ if(e.index==1){
getImage(divid); }else if(e.index==2){
galleryImg(divid); }
} ); }
//相冊選取圖片 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("讀取拍照文件錯誤：" + 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("讀取拍照文件錯誤：" + e.message);
}); }, function(e) {
}, { filename: "_doc/camera/",
index: 1 });
} //壓縮圖片
function compressImage(url,filename,divid){ var name="_doc/upload/"+divid+"-"+filename;//_doc/upload/F_ZDDZZ-1467602809090.jpg
plus.zip.compressImage({ src:url,//src: (String 類型 )壓縮轉換原始圖片的路徑
dst:name,//壓縮轉換目標圖片的路徑 quality:20,//quality: (Number 類型 )壓縮圖片的質量.取值范圍為1-100
overwrite:true//overwrite: (Boolean 類型 )覆蓋生成新文件 },
function(event) { //uploadf(event.target,divid);
var path = name;//壓縮轉換目標圖片的路徑 //event.target獲取壓縮轉換后的圖片url路
//filename圖片名稱 saveimage(event.target,divid,filename,path);
},function(error) { plus.nativeUI.toast("壓縮圖片失敗，請稍候再試");
}); }
//保存信息到本地 /**
* * @param {Object} url 圖片的地址
* @param {Object} divid 字段的名稱 * @param {Object} name 圖片的名稱
*/ 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("."));//圖片名稱：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();
}
//上傳圖片，實例中沒有添加上傳按鈕 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("上傳成功"); $.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("網絡錯誤，提交審批失敗，請稍候再試"); }
});
} else {
wa.close(); console.log("上傳失敗");
} }
); 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>