Creating Notifications

+ notificationWithName:object:

Returns a new notification object with a specified name and object.

Example

NSNotification *notification = [NSNotification notificationWithName:@"Eezy" object:@"my object"];
[[NSNotificationCenter defaultCenter]postNotification:notification];
 NSLog(@"%@",notification.name);

Output

2014-04-12 20:59:41.948 iOS-Tutorial[2627:a0b] Eezy

+ notificationWithName:object:userInfo:

Returns a notification object with a specified name, object, and user information.

Example

NSNotification *notification = [NSNotification notificationWithName:@"Eezy" object:@"my object" userInfo:@{@"Status": @"Success"}];
[[NSNotificationCenter defaultCenter]postNotification:notification];
 NSLog(@"%@",notification.name);

Output

2014-04-12 21:02:58.555 iOS-Tutorial[2666:a0b] Eezy

- initWithName:object:userInfo:

Initializes a notification with a specified name, object, and user information.

Example

NSNotification *notification = [[NSNotification alloc] initWithName:@"Eezy" object:@"my object" userInfo:@{@"Status": @"Success"}];
[[NSNotificationCenter defaultCenter]postNotification:notification];
 NSLog(@"%@",notification.name);

Output

2014-04-12 21:02:58.555 iOS-Tutorial[2666:a0b] Eezy

Getting Notification Information

- name

Returns the name of the notification.

Example

NSNotification *notification = [[NSNotification alloc] initWithName:@"Eezy" object:@"my object" userInfo:@{@"Status": @"Success"}];
[[NSNotificationCenter defaultCenter]postNotification:notification];
 NSLog(@"%@",[notification name]);

Output

2014-04-12 21:02:58.555 iOS-Tutorial[2666:a0b] Eezy

- object

Returns the object associated with the notification.

Example

NSNotification *notification = [[NSNotification alloc] initWithName:@"Eezy" object:@"my object" userInfo:@{@"Status": @"Success"}];
[[NSNotificationCenter defaultCenter]postNotification:notification];
 NSLog(@"%@",[notification object]);

Output

2014-04-12 21:04:54.347 iOS-Tutorial[2685:a0b] my object

- userInfo

Returns the user information dictionary associated with the receiver.

Example

NSNotification *notification = [[NSNotification alloc] initWithName:@"Eezy" object:@"my object" userInfo:@{@"Status": @"Success"}];
[[NSNotificationCenter defaultCenter]postNotification:notification];
 NSLog(@"%@",[notification userInfo]);

Output

2014-04-12 21:05:25.221 iOS-Tutorial[2698:a0b] {
    Status = Success;
}

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