IOS的小知识点补充

tabbar 隐藏 后 下面有空余

1. 要隐藏的Controller init方法

UIWindow * window = [UIApplication sharedApplication].keyWindow;

UITabBarController * tmp = (UITabBarController *)window.rootViewController;

[tmp.tabBar setHidden:YES];

2.要返回的方法里

UIWindow * window = [UIApplication sharedApplication].keyWindow;

UITabBarController * tmp = (UITabBarController *)window.rootViewController;

[tmp.tabBar setHidden:NO];