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我正在研究从这里开始的协调器模式，但由于可能存在内存泄漏，我不了解从控制器中的通用按钮中解散的更安全方法（“后退”按钮的机制可以）。

例如，我到达 ViewController2，做我的事情，然后点击一个按钮（除了导航栏中的后退按钮之外的任何人）如何正确关闭？经典有问题popViewController吗？还是在“MyCoordinatorClass”中更好地实现这样的功能？？deinit似乎总是正确调用，但我不确定哪个更好。另外，我一直使用推送，但它也可以在当前模式下使用，有什么可能的问题吗？欢迎任何帮助或澄清

protocol testProtocol: class {
    func didTest()
}

import UIKit

class ViewController2: UIViewController, StoryboardedProtocol {

    
    weak var coordinator: MainCoordinator?

    weak var delegate: testProtocol?
    
    override func viewDidLoad() {
        super.viewDidLoad()

    }
 
    #warning("how to dismiss in a Coordinator pattern?")
    @IBAction func myDelegteButtonTapped(_ sender: Any) {
        
        //better this?
        //navigationController?.popViewController(animated: true)
        
        //or this?
        
        //coordinator?.didTapFish()
        
        delegate?.didTest()
    }
    
    deinit {
        print("deallocated")
    }
}

我的协调员协议

protocol Coordinator_Protocol: AnyObject {
    
    var childCoordinators: [Coordinator_Protocol] { get set }
    var navigationController: UINavigationController { get set }

    func start()
}

我的故事板协议

protocol Storyboarded {
    static func instantiate(StoryBoardName: String) -> Self
}

extension Storyboarded where Self: UIViewController {
       
    static func instantiate(StoryBoardName: String) -> Self {
        let id = String(describing: self)
        let storyBoard = UIStoryboard(name: StoryBoardName, bundle: .main)
        return storyBoard.instantiateViewController(identifier: id) as! Self
    }
    
}

我的 MainCoordinatorClass

enum StoyboardsNames: String {
    case main =  "Main"
    case secondSB = "SecondStoryboard"
}

import UIKit
class MainCoordinator: NSObject, Coordinator_Protocol, UINavigationControllerDelegate {
 
    
    var childCoordinators = [Coordinator_Protocol]()
    var navigationController: UINavigationController
    
    init(navigationController: UINavigationController) {
        self.navigationController = navigationController
    }
    
    func start() {
        navigationController.delegate = self //passo 2
        let vc = ViewController.instantiate(StoryBoardName: StoyboardsNames.main.rawValue)
        vc.coordinator = self
        navigationController.pushViewController(vc, animated: false)
    }
    
    
    func gotoViewController2(delegate: testProtocol?) {
        let vc = ViewController2.instantiate(StoryBoardName: StoyboardsNames.main.rawValue)
        vc.delegate = delegate
        vc.coordinator = self
        navigationController.pushViewController(vc, animated: true)
    }
    
    
    

    //MARK: - ordinary storyboard, this is my standard way.
    func createAccount(messageForTest: String?) {
        let vc = CreateAccountViewController.instantiate(StoryBoardName: StoyboardsNames.main.rawValue)
        vc.message = messageForTest
        vc.coordinator = self
        navigationController.pushViewController(vc, animated: true)
//        navigationController.present(vc, animated: true, completion: nil)
    }
    

        func didTapFish() {
            navigationController.popViewController(animated: true)
        }

        func didRequestCancel() {
            navigationController.popToRootViewController(animated: true)
        }


//intercepts "back button" from navigation bar
func childDidiFinish(_ child: Coordinator_Protocol?) {
        for (index, coordinator) in childCoordinators.enumerated() {
            if coordinator === child {
                childCoordinators.remove(at: index)
                print("removed buying from coordinators")
                break
            }
        }
    }

func navigationController(_ navigationController: UINavigationController, didShow viewController: UIViewController, animated: Bool) {
        
        guard let fromViewController = navigationController.transitionCoordinator?.viewController(forKey: .from) else {
            return
        }
        
        if navigationController.viewControllers.contains(fromViewController) {
            return
        }
        
        if let buyViewController = fromViewController as? BuyViewController {
            print("fai cose in caso di BuyViewController")
            childDidiFinish(buyViewController.coordinator)
        }
        
    }
    }
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