隐藏UINavigationBar只为根UIViewController [英] Hiding the UINavigationBar only for the root UIViewController

问题描述

我使用一个UINavigationController（边注：在一个UITabBar），默认情况下给你一个UINavigationBar在顶部。如果我通过IB隐藏条，该条不仅是为了UIViewController的根，而且对于我推到堆栈的所有控制器。离开我没有（自动）的方式弹出。

I am using a UINavigationController (side note: inside a UITabBar) which by default gives you a UINavigationBar on the top. If I hide the bar through IB, the bar is gone not only for the root UIViewController but also for all the controllers I push onto the stack. Leaving me no (automatic) way to pop back.

那么如何隐藏UINavigtionBar只有根UIViewController。

So how can hide the UINavigtionBar only on the root UIViewController. Switching on/off "navigationBarHidden" temporarily does not work as this looks awkward with the animation.

任何其他想法？

推荐答案

我实际上遇到了这个问题，我如何解决它是与UINavigationCOntroller委托，我基本上有一个UINavigationController子类，并使其自己的委托，然后我实现方法

I actually ran into this problem, how i solved it was with the UINavigationCOntroller delegate, i basically have a UINavigationController subclass and made it its own delegate, then i implemented the method

- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated
{
    if([viewController isKindOfClass: [SomeClass class]])
        [self setNavigationBarHidden: NO];
    else
        [self setNavigationBarHidden: YES];
}

所以你问哪个类是它，如果它需要有一个navigationBar你显示它，这对我工作很好...希望它帮助

So you ask which class it is and if its one that needs to have a navigationBar you show it, this worked for me pretty well...hope it helps

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