ios - 同步导航栏以在 Segue 期间查看 Controller

Question

序言

查看 Controller A:没有导航栏。

查看 Controller B:有一个导航栏。

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

导航栏只是出现[而不是与 VIEW CONTROLLER B 主体同步转换]。

问题

如何强制导航栏与 View Controller 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];