我应该使用，-awakeFromNib或-viewDidLoad？ [英] Which should I use, -awakeFromNib or -viewDidLoad?

问题描述

我最近在我的应用程序有一个问题，其中一些在UIViewController子类的 -awakeFromNib 方法中创建的子视图从视图中消失。在一些戳之后，我发现移动我在 -awakeFromNib 到 -viewDidLoad 中解决了问题。看起来当UIViewController从nib中取消存档时 -awakeFromNib 只被调用一次，每次调用 -viewDidLoad 该视图是未归档的。

I recently had a problem in my app where some of the subviews I was creating in a UIViewController subclass's -awakeFromNib method were disappearing from the view. After some poking around I found that moving the code I had put in -awakeFromNib to -viewDidLoad solved the problem. Seems that -awakeFromNib gets called only once when the UIViewController is unarchived from the nib, and -viewDidLoad gets called every time the view is unarchived.

那么最好的做法是什么？看起来像UIViewController的 -awakeFromNib 不应该添加任何视图，这种东西应该在 -viewDidLoad 。我是否正确理解？或者我比我想象的更困惑。

So what's the best practice? It looks like UIViewController's -awakeFromNib shouldn't be adding any views to the view, that kind of stuff should be done in -viewDidLoad. Am I understanding this correctly? Or am I more confused than I thought?

推荐答案

awakeFromNib 当控制器本身从笔记本中取消存档时。在视图创建/取消存档时调用 viewDidLoad 。当控制器的视图存储在单独的nib文件中时，这种区别尤其重要。

awakeFromNib is called when the controller itself is unarchived from a nib. viewDidLoad is called when the view is created/unarchived. This distinction is especially important when the controller's view is stored in a separate nib file.

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