我想在 UIView 类中按下按钮时触发导航控制器

Question

当我按下 UIView 类中的按钮时，我想将导航控制器触发到其他屏幕。我怎样才能做到这一点？

//创建Button Iboutlet的UIView类的代码

import UIKit

protocol ButtonDelegate: class  {
    func buttonTapped()
}

class SlidesVC: UIView {

  var delegate: ButtonDelegate?

   @IBAction func onClickFinish(_ sender: UIButton) {

   delegate?.buttonTapped()

   }

   @IBOutlet weak var imgProfile: UIImageView!

    }

   //ViewController Class code in Which Button Protocol will be entertained

  class SwipingMenuVC: BaseVC, UIScrollViewDelegate {
         var  slidesVC = SlidesVC()

             override func viewDidLoad() {
                    super.viewDidLoad()

                    slidesVC = SlidesVC()
                    // add as subview, setup constraints etc
                    slidesVC.delegate = self

        }

extension BaseVC: ButtonDelegate {
  func buttonTapped() {

 self.navigationController?.pushViewController(SettingsVC.settingsVC(), 
            animated: true)

   }
   }

Answer 1

更简单的方法是使用 typealias。您必须在 2 个地方编写代码。 1. 您的 viewClass 和 2. 在您的 View Controller 中。

如果需要，请在 SlidesView 类中添加类型别名并定义参数类型，否则将其留空。

class SlidesView: UIView {
typealias OnTapInviteContact = () -> Void
var onTapinviteContact: OnTapInviteContact?

    @IBAction func buttonWasTapped(_ sender: UIButton) {
    if self.onTapinviteContact != nil {
      self.onTapinviteContact()
    }

  }
}

  class SwipingMenuVC: BaseVC, UIScrollViewDelegate {
             override func viewDidLoad() {
                    super.viewDidLoad()

                    let slidesView = SlidesView()
                    slidesView.onTapinviteContact = { () in
                    // do whatever you want to do on button tap
            }

        }

Answer 2

您可以使用委托模式告诉包含 ViewController 该按钮已被按下，并让它处理接下来需要执行的任何操作，视图并不需要知道发生了什么。

一个基本的例子：

protocol ButtonDelegate: class {
   func buttonTapped()
}

class SomeView: UIView {
    var delegate: ButtonDelegate?

    @IBAction func buttonWasTapped(_ sender: UIButton) {
        delegate?.buttonTapped()
    }
}

class ViewController: UIViewController {
    var someView: SomeView

    override func viewDidLoad() {
       someView = SomeView() 
       // add as subview, setup constraints etc
       someView.delegate = self
    } 
}

extension ViewController: ButtonDelegate {
    func buttonTapped() {
        self.showSomeOtherViewController() 
        // or 
        let vc = NewViewController()
        present(vc, animated: true) 
    }
}