附件下载并查看方法

用法：

  var attachments = res.attachments[0];   //拿到附件的一些参数

 

            var download = function(attachments) {          //定义的一个下载附件方法

                if (attachments && !attachments.attachmentUrl) {

                  return;

                }

                console.log('window.savePath',window.savePath)

                var docuementName = attachments.attachmentName;

                var filePath = window.savePath + "/" + docuementName;

                console.log('下载处的filepath',filePath)

                var url = attachments.attachmentUrl;

                var fileTransfer = new FileTransfer();

                fileTransfer.download(

                  url,

                  filePath,

                  function(entry) {

                    //将文件路径保存起来，方便后面调用

                    window.fileUri = entry.fullPath.replace("file:///", "file://");

                    var URL = window.fileUri;

                    app.openFile(URL, "", function(res) {

                      app.hint("打开成功！");

                    });

                  },

                  function(error) {

                    console.log('打开失败')

                    app.hint("下载失败！");

                  }

                );

              };

 

            app.getAppDirectoryEntry(function (res) {      //获取手机保存的文件路径

                if (window.devicePlatform == "android") {

                    window.savePath = res.sdcard;

                } else if (window.devicePlatform == "iOS") {

                    window.savePath = res.documents;

                }

                download(attachments);  //调用方法

            }); 

 

 

下载后打开文件方法openfile，        调用   bingotouch.js里面的方法

    /**

     *  打开文件:如office文件,apk等，将调用系统的程序来打开文件

     *  @method app.openFile

     *  @param filePath {String} 文件地址

     *  @param mime {String} mime类型

     *  @param success {Function} 打开成功回调

     *  @param fail {Function} 打开失败回调

     *  @example

     *  app.openFile("file:///mnt/sdcard/bingotouch.docx","docx",function(res){

     *      app.hint("打开成功!");

     *  });

    */

   app.openFile = function(filePath, mime, success, fail) {

        filePath = filePath || "";

        mime = mime || "";

        success = success || function(result) {};

        fail = fail || function(result) {

            app.hint("没有找到合适的程序打开该文件");

        };

        if (window.devicePlatform == "iOS") {

            //ios无需带上file

            filePath = filePath.replace("file://","");

        }

        Cordova.exec(success, fail, "ExtendApp", "openFile",[ filePath, mime ]);

    }