同步导航栏在Segue期间查看控制器

Question

PREAMBLE

查看控制器A：没有导航栏。

查看控制器B：有一个导航栏。

目前：当从VIEW CONTROLLER A转到VIEW CONTROLLER B时：

导航栏只显示[而不是与VIEW CONTROLLER B正文同步转换]。

问题

如何强制导航栏与视图控制器主体同步？

Answer 1

1.In view will appear of ViewController A hide navigation bar and viewwilldisappear in ViewController B show navigation bar.and
2.hide navigation bar in ViewControllerA and show navigation bar in ViewController B viewwill appear
3.when you push view controller use animated in the parametes [self.navigationcontroller pushviewcontroller:viewb animated:YES];