HTML5 Plus 实现手机APP拍照或相册选择图片上传的功能

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。

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  <title>HTML5 Plus 拍照或者相册选择图片上传</title>  
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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;   
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    overflow: hidden;   
    margin: 0px -15px 0px;   
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    -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>

效果图：

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HTML5 Plus 实现手机APP拍照或相册选择图片上传的功能

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