popToViewController&popToRootViewControllerAnimated后导航栏变nil
写项目遇到需要在支付成功页面直接返回到首页,支付成功页面需要隐藏导航栏,使用的是隐藏-(void)viewWillAppear:(BOOL)animated{[superviewWillAppear:animated];self.navigationController.delegate=self;}-(void)navigationController:(UINavigationControll