Untitled

iOS: Simple Local Notification 3 Days Prior
- (IBAction)scheduleNotifButton:(id)sender {
        NSCalendar *calendar = [NSCalendar autoupdatingCurrentCalendar];
NSDate *currentDate = [self.datePicker date];

NSDateComponents *dateComponents = [[NSDateComponents alloc] init];
[dateComponents setDay:-3];

NSDate *targetDate = [calendar dateByAddingComponents:dateComponents toDate:currentDate options:0];

        UILocalNotification *localNotif = [[UILocalNotification alloc] init];
        if (localNotif == nil)
            return;
        localNotif.fireDate = targetDate;
        localNotif.timeZone = [NSTimeZone defaultTimeZone];

        localNotif.alertBody = @"Event is in 3 days!";
        localNotif.alertAction = nil;

        localNotif.soundName = UILocalNotificationDefaultSoundName;
        localNotif.applicationIconBadgeNumber = 0;

        [[UIApplication sharedApplication] scheduleLocalNotification:localNotif];

    }

NSCalendar *calendar = [NSCalendar autoupdatingCurrentCalendar];
NSDate *currentDate = [self.datePicker date];

NSDateComponents *dateComponents = [[NSDateComponents alloc] init];
[dateComponents setDay:-3];

NSDate *targetDate = [calendar dateByAddingComponents:dateComponents toDate:currentDate options:0];

[dateComponents release];

...