iphone - 在 Objective-C 中取消 UILocalnotification 的步骤

Question

我想取消 UILocalnotification。我创建了一个名为 cancelNotification 的方法，用于取消通知。但是即使取消后我仍然收到通知我在 app delegate 中听说我们需要取消通知的几个委托(delegate)方法。任何人都可以解释我在哪里调用取消方法..如果有人可以帮助我，那就太好了

   -(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;

    }

 - (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];  // I change the key value

        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

[[UIApplication sharedApplication] cancelAllLocalNotifications];

只需将其复制在方法 didLaunchWithOptions 或 viewDidLoad 下，甚至在您的下一个 UILocalNotification 代码上。

我相信这就是您在委托(delegate)中的意思？如果您在应用启动后调用此方法，它将取消您之前所有的本地通知。