Question

我想取消UILocalnotification，当我取消通知时仍然会触发通知。我想知道我是否必须在appdelegate中调用任何委托方法取消通知。我正在使用的代码正在执行。但通知被解雇了。我应该使用具有removeObserver方法的NSNotification中心取消uilocalnotification。

UILocalnotification是否会从应用程序或设备触发通知。

更新 - 这就是我安排通知的方式

 -(UILocalNotification *)scheduleNotification :(int)remedyID
        {
           NSString *descriptionBody;

           NSInteger frequency;

          UILocalNotification *notif = [[UILocalNotification alloc] init];

            NSLog(@"%d",remedyID);

            descriptionBody =[[self remedyDetailsForRemedyID:remedyID] objectForKey:@"RemedyTxtDic"];
            frequency = [[[self remedyDetailsForRemedyID:remedyID] objectForKey:@"RemedyFrequency"]intValue];

            NSArray *notificationFireDates = [self fireDatesForFrequency:frequency];

            for (NSDate *fireDate in notificationFireDates)
            {
                    notif.timeZone = [NSTimeZone defaultTimeZone];


                    notif.repeatInterval = NSDayCalendarUnit;
                    notif.alertBody = [NSString stringWithString:descriptionBody];
                    notif.alertAction = @"Show me";
                    notif.soundName = UILocalNotificationDefaultSoundName;

                    notif.applicationIconBadgeNumber = 1;

                    notif.fireDate = fireDate;

                    NSDictionary *userDict = [NSDictionary dictionaryWithObjectsAndKeys:notif.alertBody,                                         @"kRemindMeNotificationDataKey",  [NSNumber numberWithInt:remedyID],kRemindMeNotificationRemedyIDKey,
                                              nil];

                    notif.userInfo = userDict;

                    [[UIApplication sharedApplication] scheduleLocalNotification:notif];
                }

                return notif;

    }

取消通知

 - (void)cancelNotification:(int)remedyId
    {
    NSArray *notifications = [[UIApplication sharedApplication] scheduledLocalNotifications];
    NSLog(@"Cancelling... Before %d",[[[UIApplication sharedApplication]scheduledLocalNotifications]count]);

      for (UILocalNotification *notification in notifications)
      {

      int notifRemedyId = [[notification.userInfo objectForKey:@"kRemindMeNotificationRemedyIDKey"]intValue]; 
        NSLog(@"remedyID  : %d",remedyId);
        NSLog(@"notifyId : %d",notifRemedyId);
        if (remedyId == notifRemedyId) {
            [[UIApplication sharedApplication] cancelLocalNotification:notification];
          }
       }

    NSLog(@"Cancelling... After %d",[[[UIApplication sharedApplication]scheduledLocalNotifications]count]);

     }

Answer 1

NSNotification中心，它具有removeObserver方法来取消uilocalnotification。

NSNotificationCenter与UILocalNotification有 nothing 。我很抱歉他们都在名字的某个地方使用“通知”，但这只是巧合。

Answer 2

scheduledLocalNotifications会为您提供所有预定通知的列表并使用

- (void)cancelLocalNotification:(UILocalNotification *)notification

或者你可以使用以下方法取消它们：

[[UIApplication sharedApplication] cancelAllLocalNotifications];

编辑：

NSString *notifRemedyId = @"notifRemedyId";
UILocalNotification  *localnotif=[[UILocalNotification alloc]init];

NSDictionary *userDict = [NSDictionary dictionaryWithObjectsAndKeys:@"kRemindMeNotificationRemedyIDKey", kRemindMeNotificationRemedyIDKey,YOUR_REMEDYID,@"notifRemedyId",nil];
localnotif.userInfo = userDict;
[[UIApplication sharedApplication] scheduleLocalNotification:localnotif];

取消为：

for (UILocalNotification *aNotif in [[UIApplication sharedApplication] scheduledLocalNotifications]) {
    if ([[aNotif.userInfo objectForKey: kRemindMeNotificationRemedyIDKey] isEqualToString:@"kRemindMeNotificationRemedyIDKey"]) {
        if (remedyId == [[aNotif.userInfo objectForKey: kRemindMeNotificationRemedyIDKey] intValue]) {
            [[UIApplication sharedApplication] cancelLocalNotification:aNotif];
            break;
        }
    }
}

希望它对你有所帮助。

NSNotificationCenter是否必须取消UILocalnotficiation？

2 个答案: