使用Cordova複製文件

Question

我一直在嘗試使用cordova將名爲versions.txt的文件從applicationDirectory複製到externalApplicationStorageDirectory，但代碼失敗。

這裏是代碼

var path = cordova.file.applicationDirectory + "www/Data/versions.txt"; 

     window.resolveLocalFileSystemURL(path, 
     function gotFile(fileEntry) 
     { 

      window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, 
       function onSuccess(fileSystem) 
       { 
         var directory = new DirectoryEntry("versions.txt", path); 

         fileEntry.copyTo(directory, 'versions.txt', 
          function() 
          { 
           alert('copying was successful') 
          }, 
          function() 
          { 
           alert('unsuccessful copying') 
          }); 

       }, null); 
     },null); 

任何幫助嗎？

Answer 1

現在起作用了，應該解析目標目錄。

這裏是解決

window.resolveLocalFileSystemURL(cordova.file.externalApplicationStorageDirectory, 
         function onSuccess(dirEntry) 
         { 
          //alert(JSON.stringify(dirEntry)); 

          fileEntry.copyTo(dirEntry, 'versions.txt', 
           function() 
           { 
            alert('copying was successful') 
           }, 
           function() 
           { 
            alert('unsuccessful copying') 
           }); 
         }, null); 

Answer 2

的fileEntry.copyTo不知何故總是給錯誤，所以我嘗試了fileEntry.moveTo如下，它很適合我，從WWW複製任何文件到說的圖書館iOS設備的文件夾。

function copyToLocation(fileName){  
console.log("Copying :"+fileName); 
    window.resolveLocalFileSystemURL(cordova.file.applicationDirectory+"www/"+fileName,function (fileEntry) 
    { 
     window.resolveLocalFileSystemURL(cordova.file.dataDirectory,function (directory) 
     {     
      fileEntry.moveTo(directory, 'new_fileName.txt',function(){ 
       alert('Successful Copy!'); 
      }, 
      function() 
      { 
       alert('Copying Unsuccessful '); 
      }); 
     },null); 
    }, null); 
}