blocks|key|882072|text|-init是一个实例方法，用于初始化特定的对象。%2Binitialize是一个类方法，在创建类的任何实例和运行其他类方法之前运行。%2Binitialize不是您大多数时间使用的东西，但对于设置类作为一个整体可能使用的任何静态变量，或者确保在创建任何实例之前满足某些条件，它都很方便。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|882073|属于-init方法的代码在The+Objective-C+Programming+Language的Implementing+an+Initializer部分进行了详细描述。在Class+Objects一节中，还有一些关于初始化类(即%2Binitialize)的讨论，以及为什么您可能需要在同一文档中进行初始化。进入%2Binitialize的代码通常与类的特殊功能紧密相关，该类需要首先对其进行初始化。在%2Binitialize+(以及任何类方法)中需要记住的一件重要事情是，类方法中的self引用类本身，而不是类的实例。|882074|entityMap|0|LINK|mutability|MUTABLE|url|http://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/ObjectiveC/Introduction/introObjectiveC.html#//apple_ref/doc/uid/TP30001163-CH1-SW2|1|http://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/ObjectiveC/Chapters/ocAllocInit.html#//apple_ref/doc/uid/TP30001163-CH22-SW4|2|http://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/ObjectiveC/Chapters/ocObjectsClasses.html#//apple_ref/doc/uid/TP30001163-CH11-TPXREF115^0|0|5|O|B|1S|B|0|2|5|39|B|4D|B|5K|B|6O|4|D|10|0|1E|R|1|2G|D|2|0^^$0|@$1|2|3|4|5|6|7|T|8|@$9|U|A|V|B|C]|$9|W|A|X|B|C]|$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|10|8|@$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]]|D|@$9|1B|A|1C|1|1D]|$9|1E|A|1F|1|1G]|$9|1H|A|1I|1|1J]]|E|$]]|$1|H|3|-4|5|6|7|1K|8|@]|D|@]|E|$]]]|I|$J|$5|K|L|M|E|$N|O]]|P|$5|K|L|M|E|$N|Q]]|R|$5|K|L|M|E|$N|S]]]]

<code>-init</code> is an instance method, used to initialize a particular object. <code>+initialize</code> is a class method, run before any instances of the class are created and before other class methods are run. <code>+initialize</code> isn't something you use most of the time, but it's handy for setting up any static variables that the class as a whole might use, or for ensuring that certain conditions are met before any instances are created.

The code that belongs in an <code>-init</code> method is described thoroughly in the <a href="http://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/ObjectiveC/Chapters/ocAllocInit.html#//apple_ref/doc/uid/TP30001163-CH22-SW4" rel="noreferrer">Implementing an Initializer</a> section of <a href="http://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/ObjectiveC/Introduction/introObjectiveC.html#//apple_ref/doc/uid/TP30001163-CH1-SW2" rel="noreferrer">The Objective-C Programming Language</a>. There's also some discussion of initializing classes (i.e. <code>+initialize</code>) and why you might need to do that in the same document, in the <a href="http://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/ObjectiveC/Chapters/ocObjectsClasses.html#//apple_ref/doc/uid/TP30001163-CH11-TPXREF115" rel="noreferrer">Class Objects</a> section. The code that goes into <code>+initialize</code> will generally be strongly tied to the special functionality of the class that requires you to initialize it in the first place. One important thing to keep in mind in <code>+initialize</code> (and in any class method) is that <code>self</code> in a class method refers to the class itself, not an instance of the class.

blocks|key|665182|text|对于Java开发人员来说，init就像一个构造函数，而initialize就像一个类上的静态块。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|665183|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

To draw a parallel for Java developers, init is like a constructor, while initialize is like a static block on a class.

In Objective-C, what is the difference between the <code>init</code> method (i.e. the designated initializer for a class) and the <code>initialize</code> method? What initialization code should be put in each?

Objective-C: init vs initialize

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Objective-C中，init方法(即为类指定的初始化器)和initialize方法有什么不同？应该在每个文件中放入什么初始化代码？

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