Question

我一直在尝试检查互联网连接。如果设备连接到互联网，那么它将转到MainStoryboard上的初始viewController，否则它会在同一个故事板上显示另一个viewController。但是这段代码对我不起作用。我没有收到任何错误，它只是不起作用。

这是截图： Screenshot

以下是我在AppDelegate.swift中写的内容：

class AppDelegate: UIResponder, UIApplicationDelegate {

var window: UIWindow?
var reachability: Reachability?

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

    UIApplication.shared.statusBarStyle = .lightContent
    NotificationCenter.default.addObserver(self, selector: #selector(ReachabilityCheck(_:)), name: NSNotification.Name.reachabilityChanged, object: nil)
    return true
}

功能是：

    @objc func ReachabilityCheck(_: Notification) {
    var remoteHostStatus = self.reachability!.currentReachabilityStatus()

    if remoteHostStatus == NotReachable
    {
        let mainStoryboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
        let offlineViewController = mainStoryboard.instantiateViewController(withIdentifier: "notReachable") as! notReachableViewController
        window!.rootViewController = offlineViewController
        window!.makeKeyAndVisible()
    }else
    {
        let mainStoryboard = UIStoryboard(name: "Main", bundle: nil)
        let initialViewController = mainStoryboard.instantiateViewController(withIdentifier: "mainNav") as! UINavigationController
        window!.rootViewController = initialViewController
        window!.makeKeyAndVisible()
    }
}

我该怎么做才能让它发挥作用？请帮忙！

Answer 1

雨燕4

创建一个新的Swift类

import Foundation

import Alamofire

class Connectivity {

class func isConnectedToInternet() ->Bool {

return NetworkReachabilityManager()!.isReachable

}

}

//用法.....

    if Connectivity.isConnectedToInternet() == true {
            print("Yes! internet is available.")
            // do some tasks..
        }
        else
        {
           // self.view.makeToast("Yes! internet is available.")
            print("Yes! internet is available.")
        }

Swift 4中的可达性问题

1 个答案: