Xcode 6导航栏很奇怪

Question

I just upgraded my Xcode 5 project to Xcode 6 (clean install). But now with 2 viewControllers there is a problem: I try to hide the back button on 1 of them, it goes weird (see the pictures). 

I didn't change anything. Is it possible to fix this somehow?

http://i60.tinypic.com/2qd096v.png

http://i60.tinypic.com/npgv0y.png

在注册屏幕上应该有一个后退按钮，因为Sparks标题不应该存在。如果我按下导航栏，它会再次进入欢迎屏幕，然后一切都恢复正常。

Answer 1

好吧，我找到了解决方案。

在您推送到新控制器的文件中，您必须设置它隐藏后退按钮。

controller.navigationItem.hidesBackButton = YES; [self.navigationController pushViewController：controller animated：YES];