EXC_BAD_ACESS while accessing class variable

I have assigned class varaible as....

  [MyINFO setUsrID:[dict valueForKey:USERID]];

but when i access "usrID" on another view controller it gives EXC_BAD_ACESS error. Please sugges开发者_运维知识库t what changes should be done in MyINFO ?

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There's a good Matt Gallagher post about Singletons, along with a clever macro for creating singletons in Objective-C. You can read it here.

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Class variables do not work this way in Objective-C. You can create a singleton class and use instance variables of the singleton.