Ios 无法关闭NavigationController

大家好，我在关闭导航控制器时遇到问题。 这段代码对我不起作用。当我尝试在ViewController中调用它时

   @IBAction func backButtonPressed(_ sender: UIBarButtonItem) {
        self.navigationController?.dismiss(animated: true, completion: nil)
    }

这就是我在第一个ViewController中所做的，我只是打开了ProfileViewController，它有一个自定义的转换

let storyboard = UIStoryboard(name: "Main", bundle: nil)
let controller = storyboard.instantiateViewController(withIdentifier: "Profile") as? NavigationControllerTransition
controller?.modalPresentationStyle = .custom
controller?.transitioningDelegate = self
controller?.interactor = self.interactor
controller?.animatorDirection.direction = .right
self.animatedTransition.animatorDirection.direction = .right
self.present(controller!, animated: true, completion: {})

我有一个自定义的NavigationController类，它调用NavigationControllerTransition，使其能够从屏幕边缘滑动以进行自定义转换

class NavigationControllerTransition: UINavigationController {

    var interactor: Interactor?
    var animatorDirection = AnimatorDirection()

    override func viewDidLoad() {
        super.viewDidLoad()

        let panGesture = UIPanGestureRecognizer(target: self, action: #selector(NavigationControllerTransition.handleTap(sender:)))
        self.view.addGestureRecognizer(panGesture)

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }

    func handleTap(sender: UIPanGestureRecognizer) {

        let percentThreshold: CGFloat = 0.3
        let translation = sender.translation(in: view)

        var horitonzalMovement: CGFloat = 0.0

        var downwardMovementPercent: Float = 0.0

        if self.animatorDirection.direction == .left {
            horitonzalMovement = -(translation.x / view.bounds.width)
            let downwardMovement = fmaxf(Float(horitonzalMovement), 0.0)
            downwardMovementPercent = fminf(downwardMovement, 1.0)

        } else {
            horitonzalMovement = +(translation.x / view.bounds.width)
            let downwardMovement = fmaxf(Float(horitonzalMovement), 0.0)
            downwardMovementPercent = fminf(downwardMovement, 1.0)

        }

        let progress = CGFloat(downwardMovementPercent)
        guard let interactor = interactor else { return }

        switch sender.state {
        case .began:
            interactor.hasStarted = true
            dismiss(animated: true, completion: nil)
        case .changed:
            interactor.shouldFinish = progress > percentThreshold
            interactor.update(progress)
        case .cancelled:
            interactor.hasStarted = false
            interactor.cancel()
        case .ended:
            interactor.hasStarted = false
            interactor.shouldFinish ? interactor.finish() : interactor.cancel()
        default: break
        }
    }
}

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因此，我可以滑动以打开或关闭我的ViewController，过渡效果非常好。唯一的问题是当我尝试使用UIButton关闭ViewController时。NavigationController将不会关闭和冻结。有什么建议吗（

我假设您只是想关闭ViewController，而不是导航控制器本身

@IBAction func backButtonPressed(_ sender: UIBarButtonItem) {
    self.dismissViewControllerAnimated(true, completion: nil)
    // Technically you don't even need the self here. 
    // In swift self is implicit in most cases. 
}

将导航控制器视为处理一组视图。当您在导航控制器中切换到一个新视图时，您将向堆栈中添加一个新视图。当您关闭时，您将从堆栈中弹出一个视图。此外，永远不要切换到返回，始终关闭。如果您未能关闭堆栈上的视图控制器，则视图控制器将保持在m中埃默里

如果您需要将数据传递回上一个视图，一种技术称为“展开序列”

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希望这有帮助！

您可以使用

navigationController？隐藏导航栏。setNavigationBarHidden（true，动画：false）

我不想隐藏它，我想取消它。您的iAction位于哪个文件中？在我的ViewControlleri中，是ProfileView还是您试图取消的带有后退按钮的ProfileView？在这种情况下，iAction需要在ProfileViewController中。iAction是否实际启动？您是否将其链接到故事板中的按钮？它是它已经在ProfileViewConrtoleller.是的，它正在开火