导航栏右滑返回失效

- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
    self.navigationController.interactivePopGestureRecognizer.delegate = self;
}


- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer{
    DLog(@"%ld子VC",self.navigationController.childViewControllers.count);
    return self.navigationController.childViewControllers.count > 1;//是不是rootvc
}

 // self.navigationController.navigationBarHidden = NO;
尽量用下边这个来隐藏显示.不解释,都是坑
    [self.navigationController setNavigationBarHidden:NO animated:YES];

注:FDFullscreenPopGesture 这个很6,可以搜一下,一句代码都不需要就可以实现