popToViewController用法（亲测可用）

[self.navigationController popToViewController:[self.navigationController.viewControllers objectAtIndex:2] animated:YES];或for (UIViewController *temp in self.navigationController.viewControllers) {           if ([temp isKindOfClass:[你要跳转到的Controller class]]) {              [self.navigationController popToViewController:temp animated:YES];           }       }