IOS新特性

http://www.devdiv.com/iOS_iPhone-iOS6%E6%96%B0%E7%89%B9%E5%BE%81%EF%BC%9A%E5%8F%82%E8%80%83%E8%B5%84%E6%96%99%E5%92%8C%E7%A4%BA%E4%BE%8B%E6%B1%87%E6%80%BB------%E6%8C%81%E7%BB%AD%E6%9B%B4%E6%96%B0%E4%B8%AD_%E6%9B%B4%E6%96%B0%E8%87%B32012-06-20_-thread-127965-1-1.html