@property (nonatomic, getter = isStatusBarHidden) BOOL statusBarHidden;

#pragma mark - 隐藏状态栏#pragma mark - Private-  (BOOL)prefersStatusBarHidden {    return  self.statusBarHidden ;}- (void)toggleStatusBarHiddenWithAppearanceUpdate:(BOOL)updateAppearance{    self.statusBarHidden = updateAppearance;    [UIView animateWithDuration:UINavigationControllerHideShowBarDuration animations:^{            [self setNeedsStatusBarAppearanceUpdate];        }];    }