ios - 如果已连接互联网，我如何关闭 View Controller

Question

如果连接到互联网，我试图关闭 View Controller 。当没有互联网时，它会显示我的 noInternetViewController 但是当我重新连接到互联网时，noInternetViewController View 并没有被关闭。

override func viewWillDisappear(_ animated: Bool) {
    super.viewWillDisappear(animated)

    NotificationCenter.default.removeObserver(self, name: ReachabilityChangedNotification, object: reachability)
}

func reachabilityChanged(note: NSNotification) {
    let reachability = note.object as! Reachability

    if reachability.isReachable {
        if noInternet == true {
            DispatchQueue.main.async {
                self.noInternet = false
                self.dismiss(animated: true, completion: nil)
            }
        }
    } else {
        noInternet = true
        if noInternet == true {
            DispatchQueue.main.async {
                let storyboard = UIStoryboard(name: "Main", bundle: nil)
                let noInternetViewController = storyboard.instantiateViewController(withIdentifier: "NoInternetViewController") as! NoInternetViewController
                noInternetViewController.modalPresentationStyle = UIModalPresentationStyle.overFullScreen
                self.present(noInternetViewController, animated: true, completion: nil)
            }
        }

    }
}

和 NoInternetViewController:

import UIKit

class NoInternetViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
    }
}

谢谢你的帮助

Answer 1

在您的 NoInternetViewController 中，您也可以向其添加一个 Observer。当您收到连接时，发布通知以触发其选择器自行关闭。

override func viewDidLoad() {
    super.viewDidLoad()
    NotificationCenter.default.addObserver(self, selector: #selector(receivedConnection), name: NSNotification.Name.init(rawValue: "ReceivedConnection"), object: nil)
}

func receivedConnection() {
    self.dismiss(animated: true, completion: nil)
}