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Is there a way to access the value of a variable of another class in the iphone whithout using the delegate?

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you should be able to access the variable if you write a getter method or if you synthesize the variable in the implementation.

See listing 5.2 in this document from Apple for an example. http://developer.apple.com/mac/library/iPad/index.html#documentation/Cocoa/Conceptual/ObjectiveC/Articles/ocProperties.html

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did that but it returns null when called by another class

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