iphone - Objective-C: How Can I Access String Variable As a Global?

Question

I am new to iPhone development. I want to access a string variable in all the class methods, and I want to access that string globally. How can I do this?

Please help me out.

Answer 1

Leaving aside the issue of global variables and if they are good coding practice...

Create your string outside of any Objective-C class in a .m file in your project:

NSString *myGlobalString = @"foo";

Then put the declaration in a header file that is included by every other file that wants to access your string:

extern NSString *myGlobalString;

OK, well I can't leave it entirely aside. Have you considered putting your "global" string somewhere else, perhaps inside your application delegate as a (possibly read-only) property?