Xcode 8中的可达性错误e Swift 3

Question

我有一个巨大的问题！ 我试图在使用Xcode 8 Beta 3和Swift的应用中实现可达性。

当用户有互联网（wifi或4G）时：背景变成绿色。如果你不会背景，它将是红色的。而且，如果用户在蜂窝网络中访问互联网，背景会变成黄色。

的代码运行良好，但是当我关掉无线网络，它打破

这里我github上的项目 - 我的“单一视图的应用程序”

https://github.com/ewersoncastelo/testReachabilityXcode8

Answer 1

你需要修复你的方法选择。像这样尝试。

的AppDelegate

import UIKit 

@UIApplicationMain 
class AppDelegate: UIResponder, UIApplicationDelegate { 
    var window: UIWindow? 
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool { 
     reachability = Reachability.forInternetConnection() 
     reachability.startNotifier() 
     return true 
    } 
    func applicationWillResignActive(_ application: UIApplication) { 
     // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state. 
     // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game. 
    } 
    func applicationDidEnterBackground(_ application: UIApplication) { 
     // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later. 
     // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits. 
    } 
    func applicationWillEnterForeground(_ application: UIApplication) { 
     // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background. 
    } 
    func applicationDidBecomeActive(_ application: UIApplication) { 
     // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface. 
    } 
    func applicationWillTerminate(_ application: UIApplication) { 

    } 
} 

视图控制器

import UIKit 
import SystemConfiguration 

var reachability = Reachability() 

class ViewController: UIViewController { 

    override func viewDidLoad() { 
     super.viewDidLoad() 

     NotificationCenter.default.addObserver(self, selector: #selector(reachabilityStatusChanged(_:)), name: .reachabilityChanged, object: nil) 

    } 

    func updateInterfaceWithCurrent(networkStatus: NetworkStatus) { 
     switch networkStatus { 
     case NotReachable: 
      view.backgroundColor = .red 
      print("No Internet") 
     case ReachableViaWiFi: 
      view.backgroundColor = .green 
      print("Reachable Internet") 
     case ReachableViaWWAN: 
      view.backgroundColor = .yellow 
      print("Reachable Cellular") 
     default: 
      return 
     } 

    } 
    override func viewWillAppear(_ animated: Bool) { 
     super.viewWillAppear(animated) 
     // 
     updateInterfaceWithCurrent(networkStatus: reachability.currentReachabilityStatus()) 

    } 
    func reachabilityStatusChanged(_ sender: NSNotification) { 
     guard let networkStatus = (sender.object as? Reachability)?.currentReachabilityStatus() else { return } 
     updateInterfaceWithCurrent(networkStatus: networkStatus) 
    } 
    override func viewWillDisappear(_ animated: Bool) { 
     NotificationCenter.default.removeObserver(self, name: .reachabilityChanged, object: nil) 
    } 
    override func didReceiveMemoryWarning() { 
     super.didReceiveMemoryWarning() 
     // Dispose of any resources that can be recreated. 
    } 
}