http://p30droid.com/topic/1227-%DA%A9%D8%A7%D8%B1-%D8%A8%D8%B1-%D8%B1%D9%88%DB%8C-%D9%85%D9%82%D8%AF%D8%A7%D8%B1%D9%87%D8%A7%DB%8C-edit-text-%D9%88-text-view/