iOS中使用hidesBottomBarWhenPushed，Pop的时候如何显示出TabBar？

Question

A -> B | B -> A

在A中hidesBottomBarWhenPushed = YES，到B了TabBar就隐藏了。

当我从B Pop回来的时候，在ViewWillDisappear中hidesBottomBarWhenPushed = YES，Tabbar还是隐藏了的，怎么破？怎么让回来后Tabbar显示出来？

Answer 1

經摸索和總結，出了一篇文，供參考：http://blog.segmentfault.com/isaced/1190000000327529

Answer 2

在viewWillAppear和viewWillDisappear的時候設定

Answer 3

呃..竟然是這麼久的坑了..今天自己遇到了就來填一下好了, 根據文檔的介紹, hidesBottomBarWhenPushed
就是A Boolean value indicating whether the toolbar at the bottom of the screen is hidden when the view controller is pushed on to a navigation controller. The value of this property on the topmost view controller determines whether the toolbar is visible. If the value of this property is , the tool Pis trueden. is false, the bar is visible. 重點在於topmost, 當你A壓B的時候, B將成為topmost view controller, 將B的hidesBottomBarWhenPushed設為true才是正解.