ObjectiveC:在导航控制器中添加/执行多段

// 创建导航控制器对象
UINavigationController *navigationController = [[UINavigationController alloc] init];

// 创建多个视图控制器对象
UIViewController *firstViewController = [[UIViewController alloc] init];
UIViewController *secondViewController = [[UIViewController alloc] init];
UIViewController *thirdViewController = [[UIViewController alloc] init];

// 将视图控制器添加到导航控制器中
[navigationController pushViewController:firstViewController animated:NO];
[navigationController pushViewController:secondViewController animated:NO];
[navigationController pushViewController:thirdViewController animated:NO];

// 执行多段，返回到指定的视图控制器
[navigationController popToViewController:firstViewController animated:YES];