blocks|key|2517215|text|不，他们做了不同的事情。想象一下这样的类结构：NSObject+=>+MyObject+=>+MySubclass，假设您在MyObject上有一个名为MyCategory的类别。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2517216|现在，从MyCategory调用类似于从MyObject调用，因此super指向NSObject，而调用[super+init]则调用NSObject的-init方法。但是，从子类super调用MyObject，因此使用<代码>d14进行初始化将调用MyObject的-init方法，该方法的行为与d17的不同。|2517217|这两种行为是不同的，所以在使用类别进行初始化时要小心；类别不是子类，而是对当前类的添加。|2517218|entityMap^0|N|8|Z|8|1B|A|1Q|8|24|A|0|4|A|K|8|X|5|14|8|1G|C|1V|8|24|5|2I|5|2P|8|3H|8|3Q|5|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@$9|M|A|N|B|C]|$9|O|A|P|B|C]|$9|Q|A|R|B|C]|$9|S|A|T|B|C]|$9|U|A|V|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|C]|$9|11|A|12|B|C]|$9|13|A|14|B|C]|$9|15|A|16|B|C]|$9|17|A|18|B|C]|$9|19|A|1A|B|C]|$9|1B|A|1C|B|C]|$9|1D|A|1E|B|C]|$9|1F|A|1G|B|C]|$9|1H|A|1I|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|1J|8|@]|D|@]|E|$]]|$1|J|3|-4|5|6|7|1K|8|@]|D|@]|E|$]]]|K|$]]

No, they do different things. Imagine a class structure like this: <code>NSObject</code> => <code>MyObject</code> => <code>MySubclass</code>, and say you have a category on <code>MyObject</code> called <code>MyCategory</code>. 

Now, calling from <code>MyCategory</code> is akin to calling from <code>MyObject</code>, and therefore <code>super</code> points to <code>NSObject</code>, and calling <code>[super init]</code> invokes <code>NSObject</code>'s <code>-init</code> method. However, calling from the subclass, <code>super</code> points to <code>MyObject</code>, so initializing using <code>super</code> invokes <code>MyObject</code>'s <code>-init</code> method, which, unless it isn't overridden, behaves differently from <code>NSObject</code>'s.

These two behaviors are different, so be careful when initializing using categories; categories are not subclasses, but rather additions to the current class.

blocks|key|2517260|text|在下面的示例中，super将调用UIView+init+(而不是UINavigationBar+init方法)|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2517261|@implementation+UINavigationBar+(ShadowBar)
-+(void)drawRect:(CGRect)rect+{
++++//draw+the+shadow+ui+nav+bar
++++[super+init];
}
@end|code-block|syntax|javascript|2517262|如果您将其子类化，[super+init]将调用UINavigationBar初始化方法。|2517263|所以，是的，如果你要在UINavigationBar+init中做一些额外的事情(额外的来自UIView)，它们会做不同的事情。|2517264|entityMap^0|8|5|G|6|W|F|0|0|9|C|O|F|0|B|F|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|Y|8|@$9|Z|A|10|B|C]|$9|11|A|12|B|C]]|D|@]|E|$]]|$1|M|3|N|5|6|7|13|8|@$9|14|A|15|B|C]]|D|@]|E|$]]|$1|O|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|P|$]]

Given the below example, <code>super</code> will call <code>UIView</code> init (not <code>UINavigationBar</code> init method)

<pre><code>@implementation UINavigationBar (ShadowBar)
- (void)drawRect:(CGRect)rect {
 //draw the shadow ui nav bar
 [super init];
}
@end
</code></pre>

If you subclass it, <code>[super init]</code> will call <code>UINavigationBar</code> init method.

So yes, if there are additional things you will do in <code>UINavigationBar</code> init (extra from UIView) they do different things.

blocks|key|2801752|text|编辑:以下内容建立在一个有缺陷的前提下，请看josh的回答。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2801753|不删除，这仍然是一个有趣的参考，因为它可能会让你误入歧途。|2801754|它们是一样的..。在没有引用任何外部讨论的情况下，我们可能会有你说我应该……“用学术答案回答学术问题”。|2801755|@implementation+categoryTestViewController+(ShadowBar)
-+(void)viewDidAppear:(BOOL)animated+{
++++//draw+the+shadow+ui+nav+bar
++++NSLog(@"super's+class+=+%25@,+self's+class+%25@",[super+class],[self+class]);
++++if+([self+class]+==+[super+class])+{
++++++++NSLog(@"yeah+they+are+the+same");
++++}
}
@end|code-block|syntax|javascript|2801756|输出：|2801757|2011-05-29+08:06:16.198+categoryTest[9833:207]+super's+class+=+categoryTestViewController,+self's+class+categoryTestViewController
2011-05-29+08:06:16.201+categoryTest[9833:207]+yeah+they+are+the+same|2801758|调用超级viewDidAppear:将导致不调用任何内容...不是循环，所以我不知道它到底在那里做什么。|2801759|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|U|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|V|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|W|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|X|8|@]|9|@]|A|$I|J]]|$1|O|3|P|5|6|7|Y|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

Edit: the following is built on a flawed premise, please look at josh's answer.

not deleting, still an interesting reference for something that could potentially lead you astray.

They are the same thing... without referencing any outside dicussions we may have had where you stated that I should ..."answer an academic question with an academic answer"

<pre><code>@implementation categoryTestViewController (ShadowBar)
- (void)viewDidAppear:(BOOL)animated {
 //draw the shadow ui nav bar
 NSLog(@"super's class = %@, self's class %@",[super class],[self class]);
 if ([self class] == [super class]) {
 NSLog(@"yeah they are the same");
 }
}
@end
</code></pre>

outputs:

<pre><code>2011-05-29 08:06:16.198 categoryTest[9833:207] super's class = categoryTestViewController, self's class categoryTestViewController
2011-05-29 08:06:16.201 categoryTest[9833:207] yeah they are the same
</code></pre>

and calling the [super viewDidAppear:] will result in calling nothing... not a loop, so I don't know what it is really doing there.

Does calling <code>[super init]</code> do the same thing in a category as a subclass? If not, what's the difference?

Is calling super in a category the same as calling it in a subclass?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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在类别中调用[super init]是否与在子类中做相同的事情？如果不是，有什么不同？

问在一个类别中调用super和在一个子类中调用它是相同的吗？
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问在一个类别中调用super和在一个子类中调用它是相同的吗？EN