How to declare NSString constants for passing to NSNotificationCenter
- by synic
I've got the following in my .h file:
#ifndef _BALANCE_NOTIFICATION
#define _BALANCE NOTIFICATION
const NSString *BalanceUpdateNotification
#endif
and the following in my .m file:
const NSString *BalanceUpdateNotification = @"BalanceUpdateNotification";
I'm using this with the following codes:
[[NSNotificationCenter defaultCenter]
addObserver:self
selector:@selector(updateBalance:)
name:BalanceUpdateNotification
object:nil];
and
[[NSNotificatoinCenter defaultCenter]
postNotificationName:BalanceUpdateNotificatoin
object:self userInfo:nil];
Which works, but it gives me a warning:
Passing argument 1 of 'postNotificationName:object:userInfo' discards qualifiers from pointer target type
So, I can cast it to (NSString *), but I'm wondering what the proper way to do this is.
