Phonegap FileTransfer在android

Question

中似乎什么也不做什么我遇到了Phonegap FileTransfer API的问题。目前，我试图运行下面的示例代码：

 saveFile: function (filepath,location, filetype) { 
      console.log("FUNCTION BEING CALLED"); 
      var self = this; 
      //filepath is path to the internets file 
      //location is where on the device the file will be stored 
      var fileTransfer = new FileTransfer(); 
      fileTransfer.download(filepath,self.rootPath + location + '.' + filetype, 
       function (entry) { 
        console.log('############# DOWNLOAD WORKS ##############'); 
        console.log("download complete: " + entry.fullPath); 
       }, 
       function (error) { 
        console.log('############# DOWNLOAD FAILS ##############'); 
        console.log("download error source " + error.source); 
        console.log("download error target " + error.target); 
        console.log("upload error code" + error.code); 
       } 
      ) 
     } 

目前，什么都似乎发生。没有错误被标记，并且回调似乎没有被解雇。我所得到的是“FUNCTION BEING CALLED”的初始console.log。

我已经双重检查过，并且可以确认我包含cordova js文件（cordova-2.4.0.js）。

如果有问题，我已经在Android模拟器，HTC One X和三星Galaxy S3上尝试了这一切，所有结果都一样。

有谁知道可能是什么原因造成的？

编辑：我也觉得我应该提到它也都运行在Angular JS应用程序中。

Answer 1

这就是我如何做它在我的项目

document.addEventListener("deviceready", onDeviceReady, false); 

function onDeviceReady() { 
    window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, gotFS, fail); 
    } 
function gotFS(fileSystem) { 
    window.fileSystem = fileSystem; 
    //create directory test_app 
    fileSystem.root.getDirectory("test_app", { 
     create : true, 
     exclusive : false 
    }, dirWallpaper, fail); 

function fail(evt) { 

} 

function dirWallpaper(entry) { 
    //save the directory path 
    window.testDir = entry; 
} 
//now download file to that location 
saveFile: function (filepath,location, filetype) { 
     console.log("FUNCTION BEING CALLED"); 
     var self = this; 
     //filepath is path to the internets file 
     //location is where on the device the file will be stored 
     var fileTransfer = new FileTransfer(); 
     var path = window.testDir.fullPath + "/test_pdf."+ filetype; 
     fileTransfer.download(filepath,path, 
      function (entry) { 
       console.log('############# DOWNLOAD WORKS ##############'); 
       console.log("download complete: " + entry.fullPath); 
      }, 
      function (error) { 
       console.log('############# DOWNLOAD FAILS ##############'); 
       console.log("download error source " + error.source); 
       console.log("download error target " + error.target); 
       console.log("upload error code" + error.code); 
      } 
     ) 
    } 

尝试像这样，让我知道。