iOS-> setNavigationBar隐藏延迟

发布于 2024-11-27 15:41:17 字数 390 浏览 1 评论 0原文

当我在另一个视图中使用

[[self navigationController] setNavigationBarHidden:YES animated:NO];

和

[[self navigationController] setNavigationBarHidden:NO animated:NO];

时，我可以清楚地看到导航栏在这些视图之间“消失”和“出现”时的延迟。有什么办法可以忽略这一点并强制导航栏在切换视图后立即出现/消失吗？

例如。从 A 类到 B 类 - 我首先可以看到视图，然后导航栏在 +/- 1 秒后出现。从 B 类到 A 类 - 我可以看到带有导航栏的视图，大约 1 秒后导航栏消失。

原文

When i use

[[self navigationController] setNavigationBarHidden:YES animated:NO];

and in another view

[[self navigationController] setNavigationBarHidden:NO animated:NO];

I can clearly see a delay when navigation bar is 'disappearing' and 'appearing' between these views. Is there any way to omit this and force navigation bar to appear/disappear immediately after switching views?

Eg.
From class A to B- I can firstly see view, then navigation bar is appearing after +/- 1s.
From class B to A- I can see view with navigation bar and after about 1s bar is disappearing.

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〆一缕阳光ご 2024-12-04 15:41:17

您可以在新视图完成到屏幕上的转换后设置导航栏。

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

You could setup the navigation bar after the new view has completed its transition onto the screen.

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

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