Swift 4 推送 viewController 而不是 present

Question

我在通过推送显示 ViewController 时遇到问题。我有这段代码，可以很好地与礼物搭配使用。但我需要改变它来插入。我尝试使用 self.navigationController?.pushViewController(slideMenuController, animated: true) 但这对我不起作用。

func navToRecord() { 
    let mainViewController = kMainStoryboard.instantiateViewController(withIdentifier: "NQTPrivateOfficeViewController") as! NQTPrivateOfficeViewController
    let leftViewController = kMainStoryboard.instantiateViewController(withIdentifier: "NQTLeftViewController") as! NQTLeftViewController

    let nc = odrexNavigation(rootViewController: mainViewController)

    let slideMenuController = EVTSlideMenuController(mainViewController: nc, leftMenuViewController: leftViewController)
    slideMenuController.automaticallyAdjustsScrollViewInsets = true
    mainViewController.navigationItem.leftBarButtonItem = UIBarButtonItem(title: NSLocalizedString("Завершить", comment: "finishOdrex"), style: .plain, target: self, action: #selector(action))

    self.present(slideMenuController, animated: true, completion: nil)

    UIApplication.shared.keyWindow?.makeKeyAndVisible()
}

Answer 1

你可以试试

let nav = UINavigationController(rootViewController: self)
UIApplication.shared.keyWindow?.rootViewController = nav
nav.pushViewController(slideMenuController, animated: true)

顺便说一句，不要期待这一行

self.navigationController?.pushViewController(slideMenuController, animated: true) 

如果你执行它的 VC 没有包含在 navigationController 中，因为 self.navigationController? 将是 nil