在呈现模态视图控制器后，将BarButtons添加到UINavigationBar [英] Adding BarButtons to a UINavigationBar after presenting a modal view controller

问题描述

我正在使用实用程序应用程序的模板。在FlipSideViewController中，我为UINavigationController，navController添加了一个IBOutlet。在代码中，我添加了navController就好了。 rootViewController完美加载：

I'm using the template for a utility Application. In the FlipSideViewController, I added an IBOutlet for a UINavigationController, navController. In the code, I added the navController just fine. The rootViewController loads perfectly:

navController.viewControllers = [[NSArray arrayWithObject:rootViewController] retain];
[self.view addSubview:navController.view];

我改变了navController的颜色就好了：

I changed the color of the navController just fine:

navController.navigationBar.tintColor = [UIColor colorWithRed:0.6 green:0.75 blue:0.6 alpha:1.0];
navController.navigationBar.translucent = NO;

我做了一个按钮（注意：完成指的是一个解除modalviewcontroller的IBAction）： / p>

I make a button (note: "done" refers to a IBAction that dismisses the modalviewcontroller):

UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:@"TEST" style:UIBarButtonItemStyleDone target:self action:@selector(done:)];

我使用该按钮创建一个navItem：

I make a navItem using that button:

UINavigationItem *backNavItem = [[UINavigationItem alloc] initWithTitle:@"TESTTEST"];
[backNavItem setRightBarButtonItem:backButton animated:YES];

我尝试添加该按钮：

[navController.navigationBar pushNavigationItem:backNavItem animated:YES];

上面的代码惨遭失败。我显然无法向navController添加按钮，因为：

This above code fails miserably. I apparently can't add buttons to the navController because:

***因未捕获的异常而终止应用
'NSInternalInconsistencyException' ，
理由：'无法调用
pushNavigationItem：animated：直接
在由
控制器管理的UINavigationBar上。'

*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Cannot call pushNavigationItem:animated: directly on a UINavigationBar managed by a controller.'

我是否必须制作一个单独的UINavigationBar，它以某种方式连接到我的navController？我试过去那条路但没有用。

Do I have to make a separate UINavigationBar that's somehow connected to my navController? I tried going that route but with no avail.

推荐答案

我检查了NavBar这里：

I checked out "NavBar" here:

非常了解如何添加按钮。您必须从正在显示的正确ViewController中添加按钮。

Excellent insight on how to do add buttons. You have to add buttons from the correct ViewController being displayed.

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