ios - 如何从递归 View Controller 返回 Root View Controller (第四)

Question

class FourthViewController : UIViewController {

    @IBOutlet weak var previousLabel: UILabel!
    @IBOutlet weak var backButton: UIButton!

    var delegate: FourthToFirst?
    var label = ""

    // MARK: - Lifecycle method
    override func viewDidLoad() {
        super.viewDidLoad()
        previousLabel.text = label
        let fourthViewController = storyboard?.instantiateViewController(withIdentifier: "FourthViewController") as? FourthViewController
        navigationController?.pushViewController(fourthViewController!, animated: true)
    }

    // MARK: - IBAction
    @IBAction func backToFirst(_ sender: Any) {
        navigationController?.popToRootViewController(animated: true)
    }

实际上我在fourthviewController中，它是递归的(即一次又一次地插入fourthViewcontroller，不间断)

如果我按下 Controller 中的后退按钮，我必须返回(即firstviewcontroller)

问题是:

在我的代码中它正在运行(即不间断)

我无法按后退按钮返回(即firstviewcontroller)

Answer 1

navigationController?.popViewController(animated: true) 而不是 navigationController?.popToRootViewController(animated: true) 可能是您所需要的，伙计。 (基于您刚刚编辑的内容)