UINavigationController UIStatusBar 动画隐藏

- (void)setHiddenStatusBarAndNavBar{    if (self.navigationController.navigationBar.isHidden) {        isHiddenStatus = NO;    }else{        isHiddenStatus = YES;    }    [UIView animateWithDuration:UINavigationControllerHideShowBarDuration animations:^{        [self setNeedsStatusBarAppearanceUpdate];    }];    [UIView animateWithDuration:UINavigationControllerHideShowBarDuration delay:0.3 options:UIViewAnimationOptionAutoreverse animations:^{        [self.navigationController setNavigationBarHidden:isHiddenStatus animated:YES];    } completion:^(BOOL finished) {            }];}- (UIStatusBarAnimation)preferredStatusBarUpdateAnimation{    return UIStatusBarAnimationSlide ;}- (BOOL)prefersStatusBarHidden {    return isHiddenStatus;}