注册了一个通知，然后 又全部清理了，

- (void)viewDidLoad

{

    [superviewDidLoad];

    [[NSNotificationCenterdefaultCenter]addObserver:selfselector:@selector(notificationBadgeNumber) name:NotificationListLoadedobject:nil];

}

- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
[[NSNotificationCenter defaultCenter] removeObserver:self];
}