AS3 - 獲取，創建和保存XML文件

Question

我正在創建一個名爲QuizMaker的遊戲。
遊戲的測驗是外部.xml文件，QuizMaker將通過我的類QuizXML導入.xml文件。 每個測驗都包含有答案的問題，可能是圖像的形式，也可能是文本或其他形式。 玩家應該能夠在QuizMaker內導航文件夾「我的測驗」。
爲此，我需要該文件夾中的文件列表。
這裏是未完成的getter函數，以及我的問題：如何獲取文件列表？

//returns an array of paths to folders and/or .xml files from the folder "My Quizzes" 
public function getFolders():Array { 
    var folders:Array = new Array(); 
    //if .xml or a folder is the file looking at, add the file path to folders 
    return folders; 
} 

//returns an array of .xml file paths from an array consisting of file paths 
//if a folder, which contains .xml files, is encountered from the array, add the .xml file paths to an array 
public function getQuizzes(folders:Array):Array { 
    var validXML:Array = new Array(); 
    for(var curPath:uint=0;folders.length>curPath;curPath++) { 
     //if folders[curPath] is a folder 
      //somehow look through the folder's content 
      //if .xml is the file looking at, add the file path to validXML 
     //else if .xml is the file looking at, add the file path to validXML 
    } 
    return validXML; 
} 

我的第二個問題是，我怎麼能保存的文件夾「我的測驗」，在XML文件？
這些都是未完成的setter函數：

//creates new folders inside "My Quizzes" from an array, which contains the folders' names as strings 
//if a folder with the same name is encountered, don't override that folder 
public function setFolders(folderNames:Array):void { 
    for(var curPath:uint=0;folderNames.length>curPath;curPath++) { 
     //if a folder exists as folderNames[curPath] 
      //do nothing 
     //else create a folder called folderNames[curPath] 
    } 
} 

//creates new .xml files from an array, which contains XML objects, inside a folder from a string 
//if an .xml file with the same name as an XML object's nameFile is encountered, don't override that .xml file 
public function setQuizzes(outputPath:String,objectsXML:Array):void { 
    for(var curXML:uint=0;objectsXML.length>curXML;curXML++) { 
     //if an .xml file exists as objectsXML[curXML].nameFile 
      //do nothing 
     //else create objectsXML[curXML] as an .xml file 
    } 
} 

感謝您閱讀我的問題。

Answer 1

FileReference可能是你在找什麼。

它允許用戶瀏覽文件和應用程序以保存到文件系統。

private function save():void 
{ 
    var bytes:ByteArray = new ByteArray(); 
    var fileRef:FileReference = new FileReference(); 
    bytes.writeMultiByte("<root>", "iso-8859-1"); 
    //write your xml here 
    bytes.writeMultiByte("</root>", "iso-8859-1"); 

    fileRef.save(bytes,"savedata.xml"); 
}