checkbox in UItableviewcell

Question

taking reference from url link text

i am able to bring the checkbox on tableview. Now on button click i want to check which checkbox is selected. HOw can i do so?

In the url "Amagrammer" suggested to use NSnotification, can any one provide me an tutorial for that.

- (void) toggleImage

{ selected = !selected; imageView.image = (selected ? selectedImage : normalImage);

// Use NSNotification or other method to notify data model about state change. // Notification example: NSDictionary *dict = [NSDictionary dictionaryWithObject: [NSNumber numberWithInt: self.tag forKey: @"CellCheckToggled"]; [[NSNotificationCenter defaultCenter] postNotificationName: @"CellCheckToggled" object: self userInfo: dict];

}