NSNotifier on Mac OSX - objective-c

Question

I'm building a mac daemon, from scratch.
Here's a simplified version of the code.
#import <stdio.h>
#import <stdlib.h>
#import <Foundation/Foundation.h>
#include "notifier.h"
int new_notification();
notifier *not;
int main () {
#autoreleasepool {
not = [[[notifier alloc] init] autorelease];
pid_t pid;
pid = fork();
if(pid > 0) {
printf("my child id is %d\n", pid);
exit(0);
}
while(1) {
int n = new_notification();
if(n > 0) {
NSUserNotification *notification = [[NSUserNotification alloc] init];
notification.title = #"Hello, World!";
notification.informativeText = #"A notification";
notification.soundName = NSUserNotificationDefaultSoundName;
[[NSUserNotificationCenter defaultUserNotificationCenter] deliverNotification:notification];
printf("new notification : count = %d !!\n", n);
}
sleep(1);
}
}
return 0;
}
int new_notification() {
return [not get_notifications];
}
I don't see the notification on my window though, I think I have to make my application a "key" application, if so, how do it do that? I can see the output on my terminal though, and on checking if
(NSClassFromString(#"NSUserNotificationCenter")==nil)
I get FALSE

Answer 1

Extended comments that I hope answer your issue...
If your app is active, the notification is unlikely to be displayed. But you'd be able to find it in the notification center. (Notifications draw a user's attention to an app that they're not already looking at.)
I'd suggest trying [NSApp setActivationPolicy:NSApplicationActivationPolicyAccessory] to make it clear your app isn't in the foreground but I'm not totally certain whether [NSApplication sharedApplication] aka NSApp is something you'd use with a daemon.
Part of your issue may actually be that without invoking [NSApplication sharedApplication] and telling it to run you never become an app, so you can't use the notification center... or become an accessory. But I'm not certain of that either.