xcode 如何在界面构建器中添加条形按钮项？
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How to add a bar button item in interface builder?
提问by Upvote
I am really new to iPhone development and I need help setting up my views.
我对 iPhone 开发真的很陌生，我需要帮助来设置我的观点。
I have a view that is named FirstViewController.xiband a controller class for this view.
我有一个已命名的视图FirstViewController.xib和该视图的控制器类。
In my MainWindox.xibI have setup a root controller with a moveToNextViewfunction that is connected to the options bar button item.
在我中，MainWindox.xib我设置了一个根控制器，其moveToNextView功能连接到选项栏按钮项。
So when I click on this item the current view switches to the first view and I am able to swticht back. That works fine so far.
因此，当我单击此项目时，当前视图会切换到第一个视图，并且我可以切换回来。到目前为止效果很好。
The navigation bar at the top of the screen from the MainWindow.xibis displayed in the first view, too. But when I open FirstViewController.xibthere isn't any navigation bar defined (but on build&run it is displayed).
屏幕顶部的导航栏MainWindow.xib也显示在第一个视图中。但是当我打开时FirstViewController.xib没有定义任何导航栏（但在构建和运行时会显示）。
This is a problem for me because I want to add a save bar item to the first view. How do I solve that?
这对我来说是个问题，因为我想在第一个视图中添加一个保存栏项目。我该如何解决？
采纳答案by Lukman
You have to do it from code. Add to your FirstViewController class viewDidLoadmethod:
你必须从代码中做到这一点。添加到您的 FirstViewController 类viewDidLoad方法：
UIBarButtonItem *anotherButton = [[UIBarButtonItem alloc] initWithTitle:@"Save" style:UIBarButtonItemStyleDone target:self action:@selector(doSave:)];
self.navigationItem.rightBarButtonItem = anotherButton;
[anotherButton release];
回答by anders
Assuming you have a UIViewController (or UIViewController subclass) that is a child of a UINavigationController. Note, I'm using storyboards so your results may vary when using xibs.
假设您有一个 UIViewController（或 UIViewController 子类），它是 UINavigationController 的子类。请注意，我使用的是故事板，因此在使用 xibs 时您的结果可能会有所不同。
If you do not see a UINavigationBar on the interface, try manually changing the simulated metrics.
Drag a Navigation Item onto the view (anywhere). You should now have a place to enter the title in the interface builder.
如果您在界面上没有看到 UINavigationBar，请尝试手动更改模拟指标。
将导航项拖到视图上（任何地方）。您现在应该有一个地方可以在界面构建器中输入标题。
- Now you can drag Bar Button Items onto the nav bar.
- 现在您可以将 Bar Button Items 拖到导航栏上。
回答by moliveira
Just drag a bar button item onto your nav bar in Interface Builder. Xcode automatically wires it up then you can use it like anything else...
只需将一个栏按钮项拖到 Interface Builder 中的导航栏上即可。Xcode 自动连接它然后你可以像其他任何东西一样使用它......
