Accessing a global varibile in any class

Hey all i have been trying to figure out why i am getting this warning:

'TxtAppDelegate' may not respond to '-TCN' 'TxtAp开发者_如何学CpDelegate' may not respond to '-TID'

when i try to use this code:

// .h file
@interface RootViewController : UITableViewController <UIActionSheetDelegate> {
NSString *theCompanyName;
NSString *theID;
}

@property (nonatomic, retain)NSString *theCompanyName;
@property (nonatomic, retain)NSString *theID;

// .m
NSString *theCompanyName;
NSString *theID;

@synthesize theCompanyName;
@synthesize theID;

TxtAppDelegate *customObjInstance = [[TxtAppDelegate alloc] init];

theCompanyName = [customObjInstance TCN];
theID = [customObjInstance TID];

I've added the header for the .h file that has the two functions in them. The code works but i really would like to solve the warning problem.

Any help would be great to solve this problem of mine :)

David

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While it would have been more helpful to see the header file where TxtAppDelegate is declared, I'm guessing the method declarations must be off. They should look like this:

- (NSString *)TCN;
- (NSString *)TID;

If this is not the cause of the problem, please post the header file here so we can examine it.

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How are declared these two functions in your header?

They should belong to a category of TxtAppDelegate class or to a protocol. If you choose the protocol, TxtAppDelegate interface should mention that it conforms to that protocol.