How to cancel local notification in iphone

Question

I am making an application that needs to set a notification, fortunately, I could not set a local notification, but I do not know how to remove the notification set by this application (my aplomatik). xcode does provide delete with removeAllNotifications functionality, but you cannot delete selected notifications set by the application

Answer 1

You can call [[UIApplication sharedApplication] cancelLocalNotification:notification] to cancel the notification. Since local notifications comply with the NSCoding protocol, they can be saved and retrieved for later cancellation.

Answer 2

I know this post is old, but hope this solution helps someone

 NSArray *notificationArray = [[UIApplication sharedApplication] scheduledLocalNotifications]; for(UILocalNotification *notification in notificationArray){ if ([notification.alertBody isEqualToString:@"your alert body"] && (notification.fireDate == your alert date time)) { // delete this notification [[UIApplication sharedApplication] cancelLocalNotification:notification] ; } } 

I compare the warning body and the date to make sure that I delete the correct notification, as it is likely that two or more notifications may have the same body or time.

Answer 3

Local notification in iOS 10 and below iOS 10 with Xcode 8 beta 2

pragma sign - Calculate before date

 -(void) calculateBeforedays:(int)_day hours:(int)_hours minutes:(int) _minutes { //_fir:(int)_firecount //Get Predefined Future date NSString *dateString = [NSString stringWithFormat:@"%@T%@:00.000Z",_eventdate,_eventtime]; NSLog(@"dateString %@",dateString); // NSLog(@"_firecount %d",_firecount); // //Get Predefined Future date // NSString *dateString = [NSString stringWithFormat:@"2016-12-31T12:%d:00.000Z",_firecount]; // NSLog(@"dateString %@",dateString); NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init]; [dateFormatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ss.SSSZ"]; NSDate *marrigeDate = [dateFormatter dateFromString:dateString]; // Set reminder date before marrige date int setDay = _day; int setHours = _hours; int setMins = _minutes; float milliseconds = (setDay * 24 * 60 * 60 ) + (setHours * 60 * 60 ) + (setMins * 60 ); NSDate *someDateInUTC = [NSDate date]; NSTimeInterval timeZoneSeconds = [[NSTimeZone localTimeZone] secondsFromGMT]; NSDate *dateInLocalTimezone = [someDateInUTC dateByAddingTimeInterval:timeZoneSeconds]; //Get Current date NSDate *currentDate = dateInLocalTimezone; NSTimeInterval marigeTimeInterval = [marrigeDate timeIntervalSinceDate:currentDate]; //Get difference between time NSTimeInterval timeIntervalCountDown = marigeTimeInterval - milliseconds; //Set perticulater timer NSDate *timerDate = [NSDate dateWithTimeIntervalSinceNow:timeIntervalCountDown]; [self triggerNotification:timerDate]; } #pragma mark- Trigger Reminders - (void)triggerNotification:(NSDate *) reminderDate { if([[[UIDevice currentDevice] systemVersion] floatValue] > 10.0f){ // create actions #if XCODE_VERSION_GREATER_THAN_OR_EQUAL_TO_8 UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter]; // create actions UNNotificationAction *acceptAction = [UNNotificationAction actionWithIdentifier:@"com.inviteapp.yes" title:@"Accept" options:UNNotificationActionOptionForeground]; UNNotificationAction *declineAction = [UNNotificationAction actionWithIdentifier:@"com.inviteapp.no" title:@"Decline" options:UNNotificationActionOptionDestructive]; UNNotificationAction *snoozeAction = [UNNotificationAction actionWithIdentifier:@"com.inviteapp.snooze" title:@"Snooze" options:UNNotificationActionOptionDestructive]; NSArray *notificationActions = @[ acceptAction, declineAction, snoozeAction ]; // create a category UNNotificationCategory *inviteCategory = [UNNotificationCategory categoryWithIdentifier:CYLInviteCategoryIdentifier actions:notificationActions intentIdentifiers:@[] options:UNNotificationCategoryOptionCustomDismissAction]; NSSet *categories = [NSSet setWithObject:inviteCategory]; // registration [center setNotificationCategories:categories]; #endif } else if([[[UIDevice currentDevice] systemVersion] floatValue] > 8.0f){ // create actions UIMutableUserNotificationAction *acceptAction = [[UIMutableUserNotificationAction alloc] init]; acceptAction.identifier = @"com.inviteapp.yes"; acceptAction.title = @"Accept"; acceptAction.activationMode = UIUserNotificationActivationModeBackground; acceptAction.destructive = NO; acceptAction.authenticationRequired = NO; //If YES requies passcode, but does not unlock the device UIMutableUserNotificationAction *declineAction = [[UIMutableUserNotificationAction alloc] init]; declineAction.identifier = @"com.inviteapp.no"; acceptAction.title = @"Decline"; acceptAction.activationMode = UIUserNotificationActivationModeBackground; declineAction.destructive = YES; acceptAction.authenticationRequired = NO; UIMutableUserNotificationAction *snoozeAction = [[UIMutableUserNotificationAction alloc] init]; snoozeAction.identifier = @"com.inviteapp.snooze"; acceptAction.title = @"Snooze"; snoozeAction.activationMode = UIUserNotificationActivationModeBackground; snoozeAction.destructive = YES; snoozeAction.authenticationRequired = NO; // create a category UIMutableUserNotificationCategory *inviteCategory = [[UIMutableUserNotificationCategory alloc] init]; inviteCategory.identifier = CYLInviteCategoryIdentifier; NSArray *notificationActions = @[ acceptAction, declineAction, snoozeAction ]; [inviteCategory setActions:notificationActions forContext:UIUserNotificationActionContextDefault]; [inviteCategory setActions:notificationActions forContext:UIUserNotificationActionContextMinimal]; // registration NSSet *categories = [NSSet setWithObject:inviteCategory]; UIUserNotificationType types = UIUserNotificationTypeBadge | UIUserNotificationTypeSound | UIUserNotificationTypeAlert; UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:types categories:categories]; [[UIApplication sharedApplication] registerUserNotificationSettings:settings]; } /// 2. request authorization for localNotification [self registerNotificationSettingsCompletionHandler:^(BOOL granted, NSError * _Nullable error) { if (!error) { NSLog(@"request authorization succeeded!"); } }]; if([[[UIDevice currentDevice] systemVersion] floatValue] > 10.0f){ #if XCODE_VERSION_GREATER_THAN_OR_EQUAL_TO_8 [self localNotificationForiOS10:reminderDate]; #endif } else { [self localNotificationBelowiOS10: reminderDate]; } } - (void)registerNotificationSettingsCompletionHandler:(void (^)(BOOL granted, NSError *__nullable error))completionHandler; { /// 2. request authorization for localNotification if([[[UIDevice currentDevice] systemVersion] floatValue] > 10.0f){ #if XCODE_VERSION_GREATER_THAN_OR_EQUAL_TO_8 UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter]; [center requestAuthorizationWithOptions:(UNAuthorizationOptionBadge | UNAuthorizationOptionSound | UNAuthorizationOptionAlert) completionHandler:completionHandler]; #endif } else if([[[UIDevice currentDevice] systemVersion] floatValue] > 8.0f){ UIUserNotificationSettings *userNotificationSettings = [UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeAlert | UIUserNotificationTypeSound | UIUserNotificationTypeBadge) categories:nil]; UIApplication *application = [UIApplication sharedApplication]; [application registerUserNotificationSettings:userNotificationSettings]; } } 

to set multiple notifications: iOS 10, add another requestWithIdentifier

pragma brand - Localization on more than iOS 10

 -(void) localNotificationForiOS10:(NSDate *) _reminderDate{ _eventReminderDate = _reminderDate; NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian]; [calendar setTimeZone:[NSTimeZone localTimeZone]]; NSDateComponents *components = [calendar components:NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay|NSCalendarUnitHour|NSCalendarUnitMinute|NSCalendarUnitSecond|NSCalendarUnitTimeZone fromDate:_reminderDate]; NSLog(@"NSDateComponents %@",components); UNMutableNotificationContent *objNotificationContent = [[UNMutableNotificationContent alloc] init]; objNotificationContent.title = [NSString localizedUserNotificationStringForKey:_eventname arguments:nil]; objNotificationContent.body = [NSString localizedUserNotificationStringForKey:@"You have event reminder" arguments:nil]; objNotificationContent.sound = [UNNotificationSound defaultSound]; /// 4. update application icon badge number objNotificationContent.badge = @([[UIApplication sharedApplication] applicationIconBadgeNumber] + 1); UNCalendarNotificationTrigger *trigger = [UNCalendarNotificationTrigger triggerWithDateMatchingComponents:components repeats:NO]; UNNotificationRequest *request = [UNNotificationRequest requestWithIdentifier:@"eventdate" content:objNotificationContent trigger:trigger]; /// 3. schedule localNotification UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter]; [center addNotificationRequest:request withCompletionHandler:^(NSError * _Nullable error) { if (!error) { NSLog(@"Local Notification succeeded"); } else { NSLog(@"Local Notification failed"); } }]; } 

to set multiple notifications below iOS 10, add different userinfo

pragma sign - Localization on less than iOS 10

 -(void) localNotificationBelowiOS10:(NSDate *) _reminderDate{ _eventReminderDate = _reminderDate; NSLog(@"dateInLocalTimezone %@",_eventReminderDate); /// 3. schedule localNotification UILocalNotification *localNotification = [[UILocalNotification alloc] init]; localNotification.fireDate = _eventReminderDate ; localNotification.alertTitle = _eventname; localNotification.alertBody = @"You have Event Name"; localNotification.timeZone = [NSTimeZone defaultTimeZone]; localNotification.repeatInterval = 0; localNotification.applicationIconBadgeNumber = [[UIApplication sharedApplication] applicationIconBadgeNumber] + 1; NSDictionary *info = [NSDictionary dictionaryWithObject:_eventname forKey:_eventname]; localNotification.userInfo = info; NSLog(@"info ---- %@",info); NSLog(@"notification userInfo gets name : %@",[info objectForKey:_eventname]); [[UIApplication sharedApplication] scheduleLocalNotification:localNotification]; } 

pragma-tag- Delete local Perticulater notification

 -(IBAction)deleteReminder:(id)sender{ UIButton *senderButton = (UIButton *)sender; _selectedRow = senderButton.tag; NSIndexPath *indexPath=[NSIndexPath indexPathForRow:senderButton.tag inSection:0]; // if section is 0 ReminderCell * cell = (ReminderCell*)[_tableView cellForRowAtIndexPath:indexPath]; _eventname = [[_eventArray objectAtIndex:indexPath.row] objectForKey:@"event_name"]; _eventdate = [[_eventArray objectAtIndex:indexPath.row] objectForKey:@"event_date"]; _eventtime = [[_eventArray objectAtIndex:indexPath.row] objectForKey:@"event_st"]; if([[[UIDevice currentDevice] systemVersion] floatValue] > 10.0f){ #if XCODE_VERSION_GREATER_THAN_OR_EQUAL_TO_8 UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter]; // remove all local notification: [center removePendingNotificationRequestsWithIdentifiers:@[_eventname]]; #endif } else { NSLog(@"Delete notification below ios 10"); UIApplication *app = [UIApplication sharedApplication]; NSArray *eventArray = [app scheduledLocalNotifications]; for (int i=0; i<[eventArray count]; i++) { UILocalNotification* oneEvent = [eventArray objectAtIndex:i]; NSDictionary *userInfoCurrent = oneEvent.userInfo; NSString *ename=[NSString stringWithFormat:@"%@",[userInfoCurrent valueForKey:_eventname]]; if ([ename isEqualToString:_eventname]) { //Cancelling local notification [app cancelLocalNotification:oneEvent]; break; } } } }