http://p30droid.com/topic/3979-%D8%AA%D8%A8%D8%AF%DB%8C%D9%84-%D8%B4%D9%85%D8%A7%D8%B1%D9%87-%D8%AA%D9%84%D9%81%D9%86-%D9%88-%D9%85%D8%AF%D9%84-%DA%AF%D9%88%D8%B4%DB%8C-%D8%A8%D9%87-%DB%8C%DA%A9-%D8%B1%D8%B4%D8%AA%D9%87-string/?do=findComment&comment=16221