UINavigationController的出栈和入栈

方法一

      入栈

    UIChildDemoViewController *childView = [[UIChildDemoViewController alloc] init];

            [self.navigationController pushViewController:childView animated:YES];

    出栈

            [self.navigationControllerpopToRootViewControllerAnimated:YES];

方法二

 

入栈

UIChildDemoViewController *childView = [[UIChildDemoViewController alloc] init];

            [self.navigationController pushViewController:childView animated:YES];

出栈

            [self.navigationController presentModalViewController:childView animated:YES];