我正在开发一个与 iOS 4 兼容的应用程序,因此我的部署目标设置为 iOS 4.0.
I'm developing an app which is iOS 4 compatible, so my deployment target is set to iOS 4.0.
每当我将 UINavigationController
放到 UITabBar
上时,都会收到以下两个警告:
Whenever I drop a UINavigationController
onto a UITabBar
, I get these two warnings:
警告:属性不可用:定义表示上下文在 Xcode 4.2 之前不可用.
警告:属性不可用:在 5.0 之前的 iOS 版本上定义演示上下文.
UINavigationController
按预期运行,实际上整个应用程序运行完美.但是这两个警告让我发疯了!
The UINavigationController
functions as expected, in fact, the entire app runs perfectly. But these two warnings are driving me nuts!
此外,当我删除 UINavigationController
时,警告就会消失.
Also, the moment I delete the UINavigationController
the warnings disappear.
只需取消选中属性检查器中的定义上下文"复选框即可.(双击 MainWindow.xib,选择导航控制器,然后转到 View->Utilities->Attributes Inspector.)这样就可以消除警告了.
Just uncheck the "Defines Context" checkbox in the attributes inspector. (Double-click on MainWindow.xib, select the navigation controller, then go to View->Utilities->Attributes Inspector.) That'll get rid of the warnings.
这篇关于Xcode 4.2 在 IB 的选项卡栏上放置导航控制器时的警告的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持跟版网!