How to react to applicationWillResignActive from anywhere?

Question

What\'s the code to subscribe to an event like applicationWillResignActive in any place in your iphone application?

[UPDATE]

Let me rephrase my question. I

Answer 1

Take a look at the documentation for the method you're talking about:

applicationWillResignActive:

Tells the delegate that the application will become inactive. This method is optional.

- (void)applicationWillResignActive:(UIApplication *)application

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Discussion

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Just before it becomes inactive, the application also posts a UIApplicationWillResignActiveNotification.