hideController工具栏在隐藏后不会再出现

Question

在我的appDelegate中,在applicationDidFinishLaunching下,我有:

[self.navigationController setToolbarHidden:NO];

在子视图中,在viewDidLoad下我有:

[self.navigationController setToolbarHidden:YES animated:YES];

但是,在返回导航控制器时,工具栏仍保持隐藏状态.我已经尝试将它添加到RootViewController但没有成功.我无法弄清楚出了什么问题.

[self.navigationController setToolbarHidden:NO animated:YES];

Answer 1

在你的subview,你可以做到以下:

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

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