Set Repeating Notifications

CCJNotificationEngine.m

+ (void)addLocalNotificationWithRepeatCount:(NSUInteger)repeatCountDesired startOffset:(NSUInteger)daysOffset {
    
    // ask for permission if necessary
    [CCJNotificationEngine requestPermissionToSetNotifications];
    // NSLog(@"notifications %@", [UIApplication sharedApplication].scheduledLocalNotifications );
    
    // let's set the time to 9:00 am
    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    
    [dateFormatter setDateFormat:@"yyyy"];
    int year = [[dateFormatter stringFromDate:[NSDate date]] intValue];
    
    [dateFormatter setDateFormat:@"MM"];
    int month = [[dateFormatter stringFromDate:[NSDate date]] intValue];
    
    [dateFormatter setDateFormat:@"dd"];
    int day = [[dateFormatter stringFromDate:[NSDate date]] intValue];
    
    [dateFormatter setDateFormat:@"HH"];
    int hour = [[dateFormatter stringFromDate:[NSDate date]] intValue];
    
    [dateFormatter setDateFormat:@"mm"];
    int minute = [[dateFormatter stringFromDate:[NSDate date]] intValue];
    
    // use NSDateComponenets to properly add a day
    int daysToAdd = 0;
    
    // logic to check wether we're adding this same day, or next day
    if ((hour > 9) || (hour == 8 && minute > 59)) {
        // set for tomorrow
        daysToAdd = 1;
    }
    
    // set up date components
    NSDateComponents *componentsTwo = [[NSDateComponents alloc] init];
    
    [componentsTwo setYear:year];
    [componentsTwo setMonth:month];
    [componentsTwo setHour:9];
    [componentsTwo setMinute:0];
    [componentsTwo setSecond:0];
    
    // create a calendar
    NSCalendar *gregorianFuture = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
    NSDate *futureTime = [gregorianFuture dateFromComponents:componentsTwo];
    
    // set local notification
    UILocalNotification *notify = [[UILocalNotification alloc] init];
    notify.fireDate  = futureTime;
    notify.soundName = UILocalNotificationDefaultSoundName;

    // 
    NSString *buildMessage = @"Check Your Stuff";
    
    // loop using repeatCountDesired to add for each day
    for (NSUInteger iCount = 0; iCount < repeatCountDesired; ++iCount) {
        
        // create a random notification message
        notify.alertBody = [NSString stringWithString:buildMessage];
        
        NSDictionary *userInfoDict = [[NSDictionary alloc] initWithObjectsAndKeys:@"colors", @"ID",
                                      buildMessage, messageKey, nil];
        notify.userInfo  = userInfoDict;
        
        // set day of NSDate component
        [componentsTwo setDay:day + daysToAdd + daysOffset + iCount];
        
        // create a calendar
        NSCalendar *gregorianFuture = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
        NSDate *futureTime = [gregorianFuture dateFromComponents:componentsTwo];
        notify.fireDate  = futureTime;
        
        [[UIApplication sharedApplication] scheduleLocalNotification:notify];
        
    }
}

+ (void)requestPermissionToSetNotifications {
    
    if ([UIApplication instancesRespondToSelector:@selector(registerUserNotificationSettings:)]) {
        
        [[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeSound categories:nil]];
    } else {
        NSLog(@"requestPermissionToSetNotifications: does not respond to 'registerUserNotificationSettings'");
    }
}