Cocoa NSNotificationCenter communication between apps failed

I need to communicate between two different console apps, Observer and Client.

In the Observer app I added this code:

[[NSNotificationCenter defaultCenter] postNotificationName:@"MyNotification" object:self];

In the Client app I added this code:

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(trackNotification:) name:@"MyNotification" object:nil];

-(void)trackNotification:(NSNotification*)notif
{
    NSLog(@"trackNotification: %@", notif);
    NSLog(@"trackNotification name: %@", [notif name]);
    NSLog(@"trackNotification object: %@", [notif object]);
    NSLog(@"trackNotification userInfo: %@", [notif userInfo]);
}

but nothing happens. I read all the documentation, but I am brand new in Mac OS X. Any ideas?

I read about the Distributed Noti开发者_开发知识库fications, I changed my code and now looks like this: In the server side:

[[NSDistributedNotificationCenter defaultCenter] addObserver:self selector:@selector(trackNotification:) name:@"MyNotification" object:nil];

-(void)trackNotification:(NSNotification*)notif
{
    NSLog(@"trackNotification: %@", notif);
    NSLog(@"trackNotification name: %@", [notif name]);
    NSLog(@"trackNotification object: %@", [notif object]);
    NSLog(@"trackNotification userInfo: %@", [notif userInfo]);
}

In the client side:

NSMutableDictionary *info;
info = [NSMutableDictionary dictionary];
[info setObject:@"foo" forKey:@"bar"];

[[NSDistributedNotificationCenter defaultCenter] postNotificationName:@"MyNotification"
                                   object:nil
                                 userInfo:info 
                       deliverImmediately:YES];

I run both applications, but nothing happens. What am I doing wrong?

NSNotificationCenter is only for notifications within one app. You want NSDistributedNotificationCenter. You can find more details in the Notification Programming Topics.

I solved my problem. This is the source code: In the client side:

NSDictionary *user = [NSDictionary dictionaryWithObjectsAndKeys: @"John Doe", @"name", @"22222222222", @"phone", @"Dummy address", @"address", nil];

//Post the notification
NSString *observedObject = @"com.test.net";
NSDistributedNotificationCenter *center = [NSDistributedNotificationCenter defaultCenter];
[center postNotificationName: @"Plugin Notification" object: observedObject userInfo: user deliverImmediately: YES];

In the server side

NSString *observedObject = @"com.test.net";
NSDistributedNotificationCenter *center = [NSDistributedNotificationCenter defaultCenter];
[center addObserver: self selector: @selector(receiveNotification:) name: @"Plugin Notification" object: observedObject];

receiveNotification definition

-(void)receiveNotification:(NSNotification*)notif
{
    NSlog(@"Hello");
}

In dealloc method

[[NSDistributedNotificationCenter defaultCenter] removeObserver:self name: @"Plugin Notification" object: nil];