AS3 Save Local File in iOS

Question

I open and test data using the FileStream class, which should avoid file security issues. It works fine until I try to save it in a local file. When I test with adl, I get a security error message that, although it was, was normal (at least it tried to save) until the application was packaged and tested on the device, but the file could not be saved. Any ideas?

public class FilesApp extends MovieClip {

    var file:File;
    var xmldata:XML;

    public function FilesApp() {
        // constructor code

        LoadButton.addEventListener(MouseEvent.MOUSE_DOWN,xml_load);
        ParseButton.addEventListener(MouseEvent.MOUSE_DOWN,xml_parse);
        SaveButton.addEventListener(MouseEvent.MOUSE_DOWN,xml_save);
    }
    public function xml_load (e:MouseEvent):void
    {
        file = File.applicationDirectory;
        file = file.resolvePath("./Data/data.xml");

        var fileStream:FileStream = new FileStream();
        fileStream.open(file, FileMode.READ);
        var str:String = fileStream.readMultiByte(file.size, File.systemCharset);
        fileStream.close();
        DataText.text = str;

        xmldata = XML(str);
        trace('xml file loaded');
    }
    public function xml_save (e:MouseEvent):void
    {
        var writeStream:FileStream = new FileStream();
        writeStream.open(file, FileMode.WRITE);
        writeStream.writeUTF("<xml><name>Changed</name><score>5000</score></xml>");
        writeStream.close();
        trace('xml file saved');
    }
    public function xml_parse (e:MouseEvent):void
    {
        trace('xml file saved');
        DataText.text = "Your name is:"+xmldata.name+" Your best score is:"+xmldata.score;
    }
}

Answer 1

File.applicationDirectory, . File.applicationStorageDirectory. File.documentsDirectory - , , :)

Answer 2

readUTF().

, , "", , "xml_save" ( "xml_load" ).

Answer 3

Filereference.save()?

Answer 4

, writeUTF readMultiByte .

readUTF, .