UINavigationBar拒绝在模态视图控制器中显示 [英] UINavigationBar refuses to show in Modal View Controller

问题描述

我正在RootViewController中使用以下代码加载模态视图控制器:

I am loading a Modal view controller using the following code in my RootViewController:

[self.navigationController presentModalViewController:accountViewController animated:YES];

在accountViewController xib文件中，我设置了一个导航栏.我的MainWindow.xib和RootViewController.xib也正确设置了导航栏.此外，我的应用程序代表已正确设置了导航控制器(我认为):

In the accountViewController xib file, I have set a navigation bar. My MainWindow.xib and RootViewController.xib also have the navigation bar setup correctly. Additionally, my app delegate has setup the navigation controller (I assume) correctly:

UINavigationController *aNavigationController = [[UINavigationController alloc] initWithRootViewController:rootViewController];
self.navigationController = aNavigationController;

[window addSubview:navigationController.view];

但是，当我加载accountViewController时，看不到UINavigationBar.不能在模式视图中显示UINavigationBar吗?我打算用它隐藏后退按钮，并添加一个右键...

However, when I load my accountViewController the UINavigationBar is nowhere to be seen. Is it not possible to show a UINavigationBar in a modal view? I was planning to use it to hide the back button, and add a right button...

推荐答案

sha的答案是正确的，但是我给出了自己的答案，以通过代码示例清楚地扩展它.

sha's answer is correct, but I'm giving my own answer to expand on it with a code example to make it clear.

您可能想要类似的东西:

You probably want something like:

- (void)showAccountViewController
{
    AccountViewController* accountViewController = [[AccountViewController alloc] initWithNibName:@"AccountView" bundle:nil];
    ...
    // Initialize properties of accountViewController
    ...
    UINavigationController* navController = [[UINavigationController alloc] initWithRootViewController:accountViewController];
    [self.navigationController presentModalViewController:navController animated:YES];
    [navController release];
    [accountViewController release];
}

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