Ios 以前的UILocalNotification在计划新通知时以及在应用程序启动之间丢失

我正在安排UILocalNotifications。它们按预期存储和工作。但一旦我安排了更多的UILocalNotification，以前创建的那些就丢失了。而且，在从Xcode 6启动应用程序之间，所有通知都会丢失

我有两个类管理不同的通知（创建、取消等）

这是第一个，另一个非常相似，错误出现在两个方面：

static NSCalendar *currentCalendar;

@implementation PBWurmProphylaxeNotificationsManager

+ (void)initialize{
currentCalendar = [NSCalendar currentCalendar];
}

+(void)createAndScheduleNotificationWith:(NSDate *)fireDate withAlertBody:(NSString *)alertBody withUserInfo:(NSDictionary *)userInfo{
UILocalNotification *notification = [[UILocalNotification alloc] init];
notification.fireDate = fireDate;
notification.repeatInterval = NSYearCalendarUnit;
notification.alertBody = alertBody;
notification.hasAction = NO;
notification.userInfo = userInfo;
notification.timeZone = [NSTimeZone localTimeZone];
notification.soundName = UILocalNotificationDefaultSoundName;
[[UIApplication sharedApplication] scheduleLocalNotification:notification];
}

+(void)enableWurmProphylaxeNotifications:(int)count{
// loop over the dogs array
NSArray *hunde = [self fetchHunde];
for (Hund *myDog in hunde) {
    [self enable:count WurmProphylaxeNotificationsForHund:myDog];
}
NSLog(@"[[[UIApplication sharedApplication] scheduledLocalNotifications] count] %lu", (unsigned long)[[[UIApplication sharedApplication] scheduledLocalNotifications] count]);
}

+(void)enable:(int)count WurmProphylaxeNotificationsForHund:(Hund *)myDog{
NSDate *day = [NSDate date];
NSDateComponents *myComps = [[NSDateComponents alloc] init];
int loops;
switch (count) {
    case 2:
        // schedule 6 notifications with time difference of 2 month and yearly repeatInterval
        [myComps setMonth:2];
        loops = 6;
        break;
    case 4:
        // schedule 3 notifications with time difference of 4 month and yearly repeatInterval
        [myComps setMonth:4];
        loops = 3;
        break;
    case 6:
        // schedule 2 notifications with time difference of 6 month and yearly repeatInterval
        [myComps setMonth:6];
        loops = 2;
        break;
    default:
        // schedule 3 notifications with time difference of 4 month and yearly repeatInterval
        [myComps setMonth:4];
        loops = 3;
        break;
}
NSMutableDictionary *userInfo = [[NSMutableDictionary alloc] init];
[userInfo setValue:myDog.uuid forKey:KEY_DOG_UUID];
[userInfo setValue:@YES forKey:IS_WURM_PROPHYLAXE_NOTIFICATION];
NSString *alertBody = [NSString stringWithFormat:@"Wurmprophylaxe für %@ fällig.", myDog.name];
for (int i = 0; i < loops; i++) {
    day = [currentCalendar dateByAddingComponents:myComps toDate:day options:0];
    [self createAndScheduleNotificationWith:day withAlertBody:alertBody withUserInfo:userInfo];
    }
}

+(void)disableWurmProphylaxeNotifications{
    NSArray *scheduledNotifications = [[UIApplication sharedApplication] scheduledLocalNotifications];
for (UILocalNotification *notification in scheduledNotifications) {
    NSDictionary *userInfo = notification.userInfo;
    if([userInfo valueForKey:IS_WURM_PROPHYLAXE_NOTIFICATION]){
        notification.userInfo = nil;
        [[UIApplication sharedApplication] cancelLocalNotification:notification];
    }
}
NSLog(@"[[[UIApplication sharedApplication] scheduledLocalNotifications] count] %lu", (unsigned long)[[[UIApplication sharedApplication] scheduledLocalNotifications] count]);
}

+(void)disableWurmProphylaxeNotificationsForHund:(Hund *)myDog{
NSArray *scheduledNotifications = [[UIApplication sharedApplication] scheduledLocalNotifications];for (UILocalNotification *notification in scheduledNotifications) {
    NSDictionary *userInfo = notification.userInfo;
    if([userInfo valueForKey:IS_WURM_PROPHYLAXE_NOTIFICATION]){
        NSString *uuid = (NSString *)[userInfo valueForKey:KEY_DOG_UUID];
        if ([uuid isEqualToString:myDog.uuid]) {
            notification.userInfo = nil;
            [[UIApplication sharedApplication] cancelLocalNotification:notification];
        }
    }
    }

}

+(NSArray *)fetchHunde{
CoreDataHelper *cdh = [(AppDelegate *) [[UIApplication sharedApplication] delegate] cdh];

NSManagedObjectContext *context = [cdh context];

NSFetchRequest  *fetchRequest = [[NSFetchRequest  alloc] init];
NSEntityDescription  *entity = [NSEntityDescription
                                entityForName:@"Hund" inManagedObjectContext:[cdh context]];
[fetchRequest setEntity:entity];

NSSortDescriptor  *sort1 = [[NSSortDescriptor  alloc]
                            initWithKey:@"name" ascending:YES];

NSPredicate *pred = [NSPredicate predicateWithFormat:@"(uuid != %@)", @"dog_unbekannt"];

[fetchRequest setPredicate:pred];

[fetchRequest setSortDescriptors:[NSArray  arrayWithObjects:sort1, nil]];

[fetchRequest setFetchBatchSize:20];

NSError *error = nil;
NSArray *results = [context executeFetchRequest:fetchRequest error:&error];
return results;
}
@end

出于调试目的，我正在使用显示此数组的表视图控制器：

_scheduledNotifications = [[UIApplication sharedApplication] scheduledLocalNotifications];

怎么了？如何有效地调试本地通知

_scheduledNotifications = [[UIApplication sharedApplication] scheduledLocalNotifications];