gisq-hb-file-lib/gisq/fileLib/downLoad.js

```

var GisqDownLoadHbLib=(function(){
	
	function downLoad(options){
		var options=options||{};
		this.path=options.path;
		this.method=options.method||"GET";
		
		this.options=options;
		this.dtask=null;
		this.init();
	}
	downLoad.prototype.init=function(){
		if (this.dtask) {
			console.log( "下载任务已创建！" );
			return;
		}
		console.log("ddd"+typeof(plus))
		if(typeof(plus)=="undefined") return;
		var _this=this;
		this.dtask = plus.downloader.createDownload( this.path, this.options,function(d, status) {  
			if (status == 200) {  
				//下载成功  
				//console.log('绝对路径:'+d.filename);  
				//这里传入的是相对路径,方便缓存显示,回调过去的是相对路径  
				if(this.options.complete)this.options.complete(d.filename);  
			} else {  
				//下载失败,需删除本地临时文件,否则下次进来时会检查到图片已存在  
				//console.log("下载失败=" + status + "==" + relativePath);  
				//dtask.abort();//文档描述:取消下载,删除临时文件;(但经测试临时文件没有删除,故使用delFile()方法删除);  
				/* if (relativePath != null) {  
					FileUtil.delFile(relativePath);  
				}  */
				if(this.options.error)this.options.error(originalUrl);  
			}
        });
		
		this.dtask.addEventListener( "statechanged", function(task,status){
			if(!_this.dtask)return;
			console.log(task)
			switch(task.state) {
				case 1: // 开始
					//outLine( "开始下载..." );
					if(_this.options.start)_this.options.start();
				break;
				case 2: // 已连接到服务器
					//outLine( "链接到服务器..." );
					if(_this.options.connected)_this.options.connected();
				break;
				case 3:	// 已接收到数据
					//outSet( "下载数据更新:" );
					//outLine( task.downloadedSize+"/"+task.totalSize );
					if(_this.options.downloading)_this.options.downloading(task.downloadedSize,task.totalSize);
				break;
				case 4:	// 下载完成
					//outSet( "下载完成！" );
					//outLine( task.totalSize );
					if(_this.options.finish)_this.options.finish(task.downloadedSize,task.totalSize);
				break;
			}
		})
	}
	downLoad.prototype.startDownloadTask=function(){
		if ( !this.dtask ) {
			//errorCallback("请先创建下载任务！");
			throw "请先创建下载任务！";
			return;
		}
		this.dtask.start();
	}
	downLoad.prototype.pauseDownloadTask=function(){
		if ( !this.dtask ) {
			//errorCallback("请先创建下载任务！");
			throw "请先创建下载任务！";
			return;
		}
		dtask.pause();
	}
	downLoad.prototype.resumeDownloadTask=function(){
		if ( !this.dtask ) {
			//errorCallback("请先创建下载任务！");
			throw "请先创建下载任务！";
			return;
		}
		dtask.resume();
	}
	downLoad.prototype.cancelDownloadTask=function(){
		if ( !this.dtask ) {
			//errorCallback("请先创建下载任务！");
			throw "请先创建下载任务！";
			return;
		}
		dtask.abort();
	}
	downLoad.prototype.readLocalFileHbUrl=function(hbUrl,successCallback,errorCallback){
		plus.io.resolveLocalFileSystemURL(hbUrl, function( fs ) {
			// 可通过fs进行文件操作 
			
			if(successCallback)successCallback(fs)
		}, function ( e ) {
			if(errorCallback)errorCallback(e);
		} );
	}
	downLoad.prototype.convertLocalFileFormHbUrl=function(hbUrl,successCallback,errorCallback){
		return plus.io.convertLocalFileSystemURL(hbUrl);
	}
	return downLoad;
})();
export default GisqDownLoadHbLib;