我关闭rootViewController [SwiftUI]时的句柄

Question

我使用的是alertHosting，当我从父级撤消rootViewController时我想处理

MAINVIEW ** [父母]

let alertHostingController = UIHostingController(rootView: SettingsView())
                                alertHostingController.modalPresentationStyle = UIModalPresentationStyle.fullScreen
                                UIApplication.shared.windows[0].rootViewController?.present(alertHostingController, animated: false)

SETTINGS VIEW ** [Child]

 UIApplication.shared.windows[0].rootViewController?.dismiss(animated: true, completion: nil)

我想知道孩子何时被父母解雇...

有什么想法吗？

Answer 1

protocol ChildDelegate: class {
    func childWasDismissed()
}

class ChildController: UIViewController {
    var delegate: ChildDelegate?

    deinit {
        delegate?.childWasDismissed()
    }
}

类似的东西。或与闭包相同。