Appdelegate function 'didreceivelocalnotification' is called immediately after the notification is created - iphone

Question

I'm using UILocalNotifications in iPhone to create an alarm. Alarm is scheduled when I click a UIButton. My issue is that – application:didReceiveLocalNotification: is called when I click this button, that is when I create a local notification. But , – application:didReceiveLocalNotification: should be called only when the notification time is reached. I checked it on both simulator and device and got the same results. Can anyone help me with this...thanks in advance.
-(void)createalarm:(NSString *)datend_time:(NSString *)message//creating alarm
{
NSLog(#"created!!!!!!!!!!!!!");
NSString *datestr = datend_time;
NSString *textstr = message;
NSDateFormatter *formatter = [[NSDateFormatter alloc]init];
[formatter setDateFormat:#"MM/dd/yyyy hh:mm a"];
NSDate *alerttime = [formatter dateFromString:datestr];
UIApplication * app = [UIApplication sharedApplication];
UILocalNotification *notification = [[UILocalNotification alloc] init];
if (notification)
{
notification.fireDate = alerttime;
//notification.timeZone = [NSTimeZone defaultTimeZone];
notification.repeatInterval = 0;
notification.alertBody = textstr;
notification.soundName = UILocalNotificationDefaultSoundName;
[app scheduleLocalNotification:notification];
[app presentLocalNotificationNow:notification];
}
}
-(void)application:(UIApplication *)application didReceiveLocalNotification: (UILocalNotification *)notification
{
NSLOG(#"delegate called")
}

Answer 1

It is because you call
[app presentLocalNotificationNow:notification];
So it shows the notification right after you created it. Remove this line of code.
[app scheduleLocalNotification:notification]; will work just fine and will shot the notification at fireDate.

Answer 2

Here is an example of NSLocalnotification:
-(void) scheduleNotificationForDate: (NSDate*)date {
/* Here we cancel all previously scheduled notifications */
[[UIApplication sharedApplication] cancelAllLocalNotifications];
UILocalNotification *localNotification = [[UILocalNotification alloc] init];
localNotification.fireDate = date;
NSLog(#"Notification will be shown on: %#",localNotification.fireDate);
localNotification.timeZone = [NSTimeZone defaultTimeZone];
localNotification.alertBody = [NSString stringWithFormat:
#"Your notification message"];
localNotification.alertAction = NSLocalizedString(#"View details", nil);
/* Here we set notification sound and badge on the app's icon "-1"
means that number indicator on the badge will be decreased by one
- so there will be no badge on the icon */
localNotification.soundName = UILocalNotificationDefaultSoundName;
localNotification.applicationIconBadgeNumber = -1;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
}
Make sure that the date you are setting is not in the past!