Swift监听网络的变化

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使用Alamofire的网络管理监听网络
1.程序启动后，若无网则提示，来网后提示，网络变化提示并发出通知
2.程序启动后，若有网则不提示，网络变化提示并发出通知

import UIKit
import Alamofire

enum NetworkingStatus {
    case mobile
    case wifi
    case none
    var description: String {
        switch self {
        case .mobile:
            return "Connected cellular mobile network".localized
        case .wifi:
            return "Connected WIFI".localized
        case .none:
            return "Network not connected".localized
        }
    }
}

class NetworkingManager {
    
    static var showTips = false
    static var oldStatus: NetworkingStatus = .none
    static var status: NetworkingStatus = .none
    
    class func startListenNetwork() {
        let manager = NetworkReachabilityManager()
        manager?.listener = { status in
            self.oldStatus = self.status
            switch status {
            case .unknown:
                self.status = .none
            case .notReachable:
                self.status = .none
            case .reachable:
                if manager?.isReachableOnWWAN ?? false {
                    self.status = .mobile
                } else if manager?.isReachableOnEthernetOrWiFi ?? false {
                    self.status = .wifi
                }
            }
            if showTips {
                Toast.showMessage(message: self.status.description)
                if oldStatus == .none, self.status == .mobile || self.status == .wifi {
                    NotificationCenter.default.post(name: NotificationNames.getNetworking, object: nil)
                }
                if oldStatus == .mobile || oldStatus == .wifi, self.status == .none {
                    NotificationCenter.default.post(name: NotificationNames.loseNetworking, object: nil)
                }
            } else {
                showTips = true
            }
            print("networing == ", self.status.description)
        }
        manager?.startListening()
        _ = Timer.scheduledTimer(withTimeInterval: 1, repeats: false, block: { _ in
            if status == .none {
                showTips = true
                Toast.showMessage(message: self.status.description)
            }
        })
    }
    
}

使用：

NetworkingManager.startListenNetwork()