Store multiple UILocalNotification in UserInfo - ios

Question

this is how i setting my local notification, all work well.
NSCalendar *gregorianCalendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDateComponents *components = [gregorianCalendar components:NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit |NSHourCalendarUnit|NSMinuteCalendarUnit fromDate:[_datePicker date]];
NSLog(#"%#",[_datePicker date]);
NSDate *fireDate = [gregorianCalendar dateFromComponents:components];
NSLog(#"Fire date : %#",fireDate);
// check if the time is already passed
if ([fireDate compare:[NSDate date]] == NSOrderedAscending)
{
// if it does add 1 day
components.day = components.day+1;
fireDate = [gregorianCalendar dateFromComponents:components];
}
NSLog(#"Fire date : %#",fireDate);
for (int i = 0; i < 7; i++) {
NSDate *scheduleDate = [fireDate dateByAddingTimeInterval:(i * 24.0f * 3600.0f)];
NSDateComponents *componentsForEachDay = [gregorianCalendar components:NSWeekdayCalendarUnit fromDate:scheduleDate];
if (componentsForEachDay.weekday != 7) { // To skip Saturday
localNotification = [[UILocalNotification alloc] init];
localNotification.repeatInterval = NSWeekCalendarUnit;
localNotification.fireDate = fireDate;
localNotification.timeZone = [NSTimeZone defaultTimeZone];
localNotification.soundName = UILocalNotificationDefaultSoundName;
localNotification.alertBody = #"test";
localNotification.repeatInterval = NSCalendarUnitDay;
localNotification.applicationIconBadgeNumber = 0;
NSDictionary *infoDict = [NSDictionary dictionaryWithObject:[NSString stringWithFormat:#"%i",i] forKey:[NSString stringWithFormat:#"bracletNotif%i",i]];
localNotification.userInfo = infoDict;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
i always get only the last object in userInfo.. how can i store all the scheduleLocalNotification in the userInfo for later cancel?
how does its work? before every scheduleLocalNotification i need so save an object and key? or can i save them all at one?
because i already tried to do that, i got all the userInfo objects but could not delete them :/
SOS please.

Answer 1

If you are trying to cancel all braclet notifications instead of giving them all a different key/value you could do this instead:
localNotification.userInfo = #{#"category": #"bracelet"};
To cancel:
[[[UIApplication sharedApplication] scheduledLocalNotifications] enumerateObjectsUsingBlock:^(UILocalNotification *notification, NSUInteger idx, BOOL *stop) {
NSDictionary *userInfo;
if((userInfo = [notification userInfo])){
NSString *categoryValue;
if((categoryValue = [userInfo objectForKey:#"category"]) && [categoryValue isEqualToString:#"bracelet"]){
[[UIApplication sharedApplication] cancelLocalNotification: notification];
}
}
}];
What we are doing here is grouping all notifications into the category: bracelet. I have chosen the key category due to future changes in the sdk. We could schedule more notifications e.g. category: neckless
Then when required we loop through all the UILocalNotifications and scan for the category key in the notifications userInfo, in the example above if the keys value equals bracelet, then we cancel the notification.
if((categoryValue = [userInfo objectForKey:#"category"]) && [categoryValue isEqualToString:#"bracelet"]){
This line of code is checking whether a key of category exists (i.e. not nil) whilst assigning it to the variable categoryValue then the if statement is immediately checking if the categoryValue is equal to bracelet
It could have been rewritten as:
NSString *categoryValue = [userInfo objectForKey:#"category"];
if(categoryValue && [categoryValue isEqualToString:#"bracelet"]){