How do I create a global variable using Objectvie-C in iPhone?

I'm the beginner in iPhone software development, and I'm creating a HTTP request using the SOAP XML parsing method.

I was creating a variable soapResult for storing the received http data. I want to use the soapResult value into another class.

How can I access that value. I was going to make it a global variable but i don't know how to create and u开发者_开发问答se it?

Also if that method is wrong then how should I implement it?

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Generally, singletons are preferred over global variables.

I found this article useful on a similar matter: Cocoa with Love: Singletons, AppDelegates and top-level data

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I suggest you to use something like Registry pattern. Just create class Registry with static methods and static properties. It is better way to controll all shared stuff in your app

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Global vars are not preferred in objective-c, but if you want to use, this approach works well.