if (Application.platform == RuntimePlatform.Android)
    {
        PathOnAndroid = Path.Combine(Application.persistentDataPath, @"file.txt");
        if (File.Exists(PathOnAndroid))
            return;


        WWW www = new WWW(PathOnAndroid);

        while (www.isDone == false)
        {

        }

        File.WriteAllBytes(PathOnAndroid, www.bytes);
    }
    else
    {
       sPathonWindows = Path.Combine(Application.persistentDataPath, @"file.txt");
    }