我所有的 IBOutlet 在 vi​​ewDidLoad 中都为零 [英] All my IBOutlet are nil in viewDidLoad

问题描述

我创建了一个 UIViewController，我们可以调用它MyViewController1.当我调用 MyViewController1 时，我所有的 IBOutlet 在 viewDidLoad 中都是 nil(在其余的代码中也是如此).

I've created a UIViewController that we can call MyViewController1. When I call MyViewController1, all my IBOutlet are nil in viewDidLoad (and in the rest of the code too).

当我创建这个控制器时
MyViewController1 *vc = [[MyViewController1 alloc] init],

When I create this controller by doing
MyViewController1 *vc = [[MyViewController1 alloc] init],

如果我将 MyViewController1 替换为另一个，例如 MyViewController2，它会起作用.所以我想问题确实出在 MyViewController1 中.

if I replace MyViewController1 by an other one, for example MyViewController2, it works. So I guess the problem is really in MyViewController1.

您可能想知道的最后一件事是，MyViewController1 实际上是 MySuperViewController1 的子类，它是一个 UIViewController.

Last thing you might want to know, is that MyViewController1 is actually a subclass of MySuperViewController1 that is a UIViewController.

感谢您的帮助！

编辑

我意识到我的情况可能更复杂.这是我的确切文件:

I realized my case was maybe more complicated. Here are my exact files :

//MySuperViewController1

// MySuperViewController1

MySuperViewController1.h

MySuperViewController1.m

MySuperViewController1.xib

//MyViewController1

// MyViewController1

MyViewController1.h

MyViewController1.m

所以笔尖属于超类，而不是子类.我可以吗?

So the nib belongs to the superclass, and not the subclass. Can I do that ?

推荐答案

你可能应该使用:

MyViewController1 *vc = [[MyViewController1 alloc] initWithNibName:@"MyViewController1" bundle:nil]

调用 init 不会与您的 xib 文件进行匹配，也不会分配您的不同 IBOutlet

calling init won't do the match with your xib file and won't alloc your differents IBOutlet

有两种可能的解决方案:

There are two possibles solutions :

首先使用 super nibName 调用 init :

First is calling init with super nibName :

MyViewController1 *vc = [[MyViewController1 alloc] initWithNibName:@"MySUperViewController1" bundle:nil]

第二个是在子初始化方法中调用超级initWithNibName: :

The second is calling the super initWithNibName: in child init method :

-(id)init {
   if (self = [super initWithNibName:@"MySuperViewController1" bundle:nil]) {
        // Init
   }
   return self;
}

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