Global variable in Objective C IPhone -

i load few variables in appdelegate class. declared in .h file.

i have global.h file declares same vars extern, such as:

nsstring *dbname;

extern nsstring *dbname;

i haven't found pattern yet, of classes include global.h var nil.

any idea doing wrong?

it looks vars like:

int x;

stick , available, vars pointers lost:

nsstring *name;

they loaded db in appdelegate.

i tried declaring

char name[30];

then assigning , good.

now what?

in .h:

 extern nsstring *global;

in .m somewhere:

 nsstring *global = @"foobar";

if need set global @ runtime, you'll have in method somewhere; say, applicationdidfinishlaunching:.

where assigning global in nsstring case? , when retaining value? mean "lost"?

note variable must not declared in .h; extern goes in .h, nsstring *global; must in 1 , 1 .m file.

Barbera