iOS LocalNotification数组在iOS 6上突然变空

Question

我正在开发包含本地通知的新项目（这不是我第一次使用此功能）。

如果每次启动特定的UIViewController时都会检查本地通知。

我的问题在于：在第一次检查中，notifications数组包含通知，但在第二次检查中，notifications数组变为空。

这里是我注册通知的代码

    localNotif.fireDate = newDate;
    localNotif.timeZone = [NSTimeZone defaultTimeZone];

    localNotif.alertBody =[NSString stringWithFormat: @"SomeTEXT"];
    localNotif.alertAction = @"SomeTEXT";
    localNotif.repeatInterval=NSWeekCalendarUnit;

    localNotif.soundName = UILocalNotificationDefaultSoundName;
    localNotif.applicationIconBadgeNumber = 1;

    NSDictionary *infoDict = [NSDictionary dictionaryWithObject:@"jomaa" forKey:@"Key"];
    localNotif.userInfo = infoDict;
    [[UIApplication sharedApplication] scheduleLocalNotification:localNotif];

这也是通知数组的输出（当数组不为空时）

打印notificationArray的说明：

    <__NSArrayM 0x1d2bb4e0>( <UIConcreteLocalNotification:
     0x1d2baf10>{fire date = Friday, January 18, 2013, 3:24:00 PM Eastern
     European Standard Time, time zone = Asia/Beirut (GMT+02:00) offset
     7200, repeat interval = NSWeekCalendarUnit, repeat count =
     UILocalNotificationInfiniteRepeatCount, next fire date = Friday,
     January 18, 2013, 3:24:00 PM Eastern European Standard Time, user info
     = {
         Key = jomaa;
 }
}
)