swift navgationcontroller的使用

//可以封装一个基类，可以控制push的次数，可以控制侧滑返回，左右item，

class BaseNavigationViewController:
UINavigationController {

    override func viewDidLoad() {

        super.viewDidLoad()

//        if self.responds(to: #selector(interactivePopGestureRecognizer)){

//            self.interactivePopGestureRecognizer().delegate = self

//            self.delegate = self

//        }

    }

    override func pushViewController(_ viewController:
UIViewController, animated:
Bool) {

        

        let className =
self.topViewController?.classForCoder

        let claName = viewController.classForCoder

        if className == claName {

            return

        }

        super.pushViewController(viewController, animated: animated)

        

    }

    

}

end