如何增加/减少 UILocalnotification 的 application.badge 编号

Question

当多个通知被触发时我有 UILocalnotification 我希望应用程序徽章编号增加并且当看到通知时我希望应用程序徽章编号减少取决于有多少通知被取消/观看了通知

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

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


        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];

        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

你可以简单地使用这两种方法，

-(void) incrementOneBadge{
    NSInteger numberOfBadges = [UIApplication sharedApplication].applicationIconBadgeNumber;
    numberOfBadges +=1;

    [[UIApplication sharedApplication] setApplicationIconBadgeNumber:numberOfBadges];
}

-(void) decrementOneBdge{
    NSInteger numberOfBadges = [UIApplication sharedApplication].applicationIconBadgeNumber;
    numberOfBadges -=1;

    [[UIApplication sharedApplication] setApplicationIconBadgeNumber:numberOfBadges];
}