iOS - 仅在一个视图上隐藏导航栏？ [英] iOS - Hide navigation bar only on one view?

问题描述

我有一个登录视图控制器，在成功登录后，将我的用户推送到另一个视图控制器（ViewControllerB）。话虽这么说，ViewControllerB嵌入在UINavigationController中，我已经用菜单按钮格式化了。

I have a login view controller that, upon successful login, pushes my user to another view controller (ViewControllerB). That being said, ViewControllerB is embedded in a UINavigationController that I've already formatted with a menu button.

因为我正在使用来自登录视图控制器的push segue，所以这个segue会导致我的UINavigationBar被一个空白的导航栏和一个后退按钮覆盖（不酷） 。也就是说，我尝试使用以下代码从登录视图控制器隐藏导航控制器：

Because I'm using a push segue from the login view controller, this segue causes my UINavigationBar to be covered with a blank nav bar and a back button (not cool). That said, I tried to hide the navigation controller from login view controller with the following code:

loginviewcontroller.m

- (void) viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    [self.navigationController setNavigationBarHidden:YES animated:animated];
}

当我这样做时，带有后退按钮的不需要的导航栏覆盖了我的其他导航栏被删除！大。然而，当我导航到其他屏幕时，我的导航栏仍然隐藏（我想让它在我的用户通过ViewControllerB后出现）。

When I do this, the unwanted navigation bar with the back button covering my other nav bar is removed! Great. However when I then navigate to other screens, my nav bar remains hidden (and I want it to appear once my user makes it past ViewControllerB).

我尝试在成功登录时使用模态segue，但当然，这使我无法在登录时使用segues导航到其他屏幕。

I tried using a modal segue upon successful login, but of course, that keeps me from being able to navigate to other screens with segues upon login.

我知道怎么做这个吗？

推荐答案

添加：

- (void)viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
    [self.navigationController setNavigationBarHidden:NO animated:animated];
}

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