ios - 如何从自定义 UITableViewCell 访问 ViewController navigationController

Question

我有一个 UITableView，我想为其实现自定义 header 。在自定义 header 中，我想要一个按钮，当点击时将新 View 推送到 navigationController 上。我无法访问自定义 header View 的 super ViewController 中的 navigationController。

class CustomViewController: UIViewController, UITableViewDelegate, UITableViewDataSource  {

    //setup views and whatnot
    //setup delegate and datasource


    func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
        return CustomHeaderView(type: section)
    }
}

class CustomHeaderView : UIView {
    let customHeaderButton : UIButton = {
        let button = UIButton()
        ...
        button.addTarget(self, action: #selector(handleCustomHeaderButtonAction()), for: .touchUpInside)
        return button
    }()
    ...
    func handleCustomHeaderButtonAction(){
        //push a new view onto the CustomViewController's navigationController
        ???
}

Answer 1

试试这个:

class SecondViewController: UIViewController,ChildDelegate {


    internal func navigatToCustomViewController() {
        // Code to write push yur controller
    }


    override func viewDidLoad() {
        super.viewDidLoad()

        let customview = customView()
        customview.delegate = self

        // Do any additional setup after loading the view.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
}

// A Protocol
protocol ChildDelegate: class {
    func navigatToCustomViewController()
}

// You custom view
class customView : UIView {

    weak var delegate: ChildDelegate?

    func actionDetailClick() {
        delegate?.navigatToCustomViewController()
    }
}