如何快速调用另一个类中的函数

如何解决如何快速调用另一个类中的函数

我有一个MainCoordinator类，该类扩展了NSObject并具有以下方法：

init(presenter: UINavigationController) {
    self.presenter = presenter
}

​func start() {
    let mainViewController = MainViewController(userDefaults: UserDefaults.standard)
    presenter.pushViewController(mainViewController,animated: false)
    self.mainViewController = mainViewController
     
    subscribetoEvents()
  }
   
  private func subscribetoEvents() {
    if let viewmodel = mainViewController?.viewmodel {
      viewmodel.showOptions.subscribe(onNext: { [weak self] in
        self?.showOptions()
      }).disposed(by: disposeBag)
}
}
private func showOptions() {
     let actionSheet = UIAlertController(title: "Would you like to open the Camera or select one from your photo library?",message: nil,preferredStyle: .actionSheet)
        
        let cameraAction = UIAlertAction(title: "Use the Camera",style: .default) { [weak self] (_) in
            self?.openCameraScanner()
        }
        
        let photoLibraryAction = UIAlertAction(title: "Open Photo Library",style: .default) { [weak self] (_) in
            self?.openPhotoLibrary()
        }
        
        let cancelAction = UIAlertAction(title: "Cancel",style: .cancel,handler: nil)
        
        actionSheet.addAction(cameraAction)
        actionSheet.addAction(photoLibraryAction)
        actionSheet.addAction(cancelAction)
        
        mainViewController?.present(actionSheet,animated: true,completion: nil)
}
}

MainViewController是扩展UIViewController的类，它具有以下按钮：

lazy private var sButton: UIButton = {
    let button = UIButton(type: .custom)
    button.setTitle('options',for: .normal)
    button.backgroundColor = UIColor.yellow
    button.roundedCorners(radius: 25)
    button
      .rx
      .tap
      .bind(to: self.viewmodel.showOptions)
      .disposed(by: self.disposableBag)
    return button
  }() 

这是它的初始化方法

init(userDefaults: UserDefaults) {
        viewmodel = Mainviewmodel(userDefaults: userDefaults)
        super.init(nibName: nil,bundle: nil)
    }

self.viewmodel.showOptions方法的类型为 PublishSubject ，每当我点击sButton时，我都希望激活MainCoordinator类中的showOptions方法。

import RxSwift

class Mainviewmodel {
    
    let disposeBag = disposeBag()

    //Subjects
    let showScanoptions = PublishSubject<Void>()
..
 init(networkable: Networkable,userDefaults: UserDefaults) {
        self.networkable = networkable
        self.userDefaults = userDefaults
        
        loginResponse.value = userDefaults.loginResponse
        
        login.subscribe(onNext: { [weak self] in
            guard let username = self?.email.value,let password = self?.password.value else { return }
            self?.isLoading.onNext(true)
            
            let loginInputs = LoginInputs(email: username,password: password)
            self?.networkable.login(loginInputs: loginInputs) { loginResponse in
                guard let loginResponse = loginResponse else {
                    self?.errorSubject.onNext(nil)
                    self?.isLoading.onNext(true)
                    return
                }
                self?.userDefaults.loginResponse = loginResponse
                self?.loginResponse.value = loginResponse
            }
        },onError: { [weak self] error in
            self?.isLoading.onNext(false)
            self?.errorSubject.onNext(error)
        }).disposed(by: disposeBag)
    }

}

这怎么可能实现？

感谢您的帮助。