Question

我有显示视图控制器，该视图具有后视图和前视图，后视图是我的侧面菜单，问题是当我从侧面菜单中点击菜单项时，它显示了目标视图控制器，但未显示导航栏。请帮我。我是iOS的新手。这是我的故事板图片： https://imgur.com/a/PbDygKO

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    itemIndex = indexPath.row
    self.revealViewController().revealToggle(animated: true)
    performSegue(withIdentifier: "webview", sender: nil)
}

这是在“准备”功能上

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    guard let navigationController = segue.destination as? UINavigationController, let progressWebViewController = navigationController.topViewController as? ProgressWebViewController else {
        return
    }

    switch itemIndex {
    case 1:
        let storyBoard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
        let newViewController = storyBoard.instantiateViewController(withIdentifier: "aboutus") as! AboutUsController
        self.present(newViewController, animated: true, completion: nil)
        break

    case 2:
        loadURL(progressWebViewController: progressWebViewController ,url: "https://google.com", title: "Event Planning")

    case 3:
        loadURL(progressWebViewController: progressWebViewController ,url: "https://google.com", title: "NCC Checklist")

    default:
        print("Unknown segue \(itemIndex)")
    }
}

Answer 1

是因为此行： self.present(newViewController, animated: true, completion: nil)

当您呈现一个viewController时，它具有模式行为，并且没有navigationController

因此，如果您需要使用navigationController，则应改用pushViewController

像这样：self.navigationController.pushViewController(newViewController, animated: true)

SWRevealViewController隐藏我的前视图控制器的导航栏

1 个答案: