initWithNibName没有被调用 [英] initWithNibName is not getting called

问题描述

我需要将一些自定义逻辑放入我的iPhone应用程序，这样根据您运行的iOS版本，选择一个不同的XIB文件（即iPhone或iPad将显示不同的XIB文件）。

I need to put it some custom logic into my iPhone app so that depending on what iOS version you are running, choose a different XIB file (i.e. iPhone or iPad will show different XIB files).

我已经从第一天构建了整个iPhone应用程序，它的一切都很好，在每个选项卡中使用tabbar控制器和标准导航控制器。

I had built the whole iPhone app from day one and its all good, using a tabbarcontroller and the standard navigation controllers in each tab.

所以我实现了：

- （id）initWithNibName：（NSString *）nibName bundle：（NSBundle *）nibBundle

方法，只是发现它没有被调用。 （我有一个断点和日志语句，没有任何获得命中）。

method, only to find that it does not get called. (I have a breakpoint and log statements in it and nothing gets hit).

有人知道为什么会这样吗？ 或如何实现此功能？

Does anyone know why this might be? OR how can i achieve this functionality?

我在某处读到initWithNibName仅在调用它时调用，查看层次结构，这是真的吗？

I have read somewhere that initWithNibName is only called when you call it, i.e. when you programatically construct your view hierarchy, is this true??

感谢很多...

推荐答案

如果你在添加到导航控制器之前不这样做：

If you're not doing something like this before adding it to your navigation controller:

SomeViewController *someViewController = [[SomeViewController alloc] initWithNibName:...];

然后很有可能你正在覆盖错误的方法。

Then chances are good you're overriding the wrong method.

如果你的视图控制器存在于一个nib文件中，比如你的导航控制器的nib文件，它将作为一个新的视图控制器对象从nib文件中取消存档，而不是使用自己的nib文件创建，因此

If your view controller lives in a nib file, say your navigation controller's nib file, it will be unarchived from the nib file as a new view controller object, instead of being created with its own nib file, so the above method won't be called.

您将不得不重写 awakeFromNib 。

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