@interface WYNavigationController ()<UINavigationControllerDelegate, UIGestureRecognizerDelegate>

@end

@implementation WYNavigationController

- (void)viewDidLoad {
    [super viewDidLoad];

    self.delegate = self;

    id target = self.interactivePopGestureRecognizer.delegate;
    UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:target action:@selector(handleNavigationTransition:)];
    [self.view addGestureRecognizer:pan];
    self.interactivePopGestureRecognizer.enabled = NO;
}

- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated
{
    if (self.viewControllers.count > 0) {
        viewController.hidesBottomBarWhenPushed = YES;
    }
    [super pushViewController:viewController animated:animated];
}


#pragma mark - UINavigationControllerDelegate
- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated {
    BOOL isHideNav = ([viewController isKindOfClass:[ViewController class]] || [viewController isKindOfClass:[WYTargetVC class]]);

    NSLog(@"isHide = %d", isHideNav);
    [self setNavigationBarHidden:isHideNav animated:YES];
}