标签：io java on as class view ie value c
[self.navigationController.viewControllers objectAtIndex:self.navigationController.viewControllers.count-2]
[self.navigationController.viewControllers objectAtIndex:self.navigationController.viewControllers.count-
2
]
导航往回传值
原文地址：http://www.cnblogs.com/Zsmile/p/4082233.html
