swift 监测网络状态 Reachability

第三方库github Reachability

1. 直接使用

• AppDelegate.swift

fileprivate var reachability: Reachability?


fileprivate func checkNetworkState() {
    reachability = try! Reachability()
    reachability?.whenReachable = { reach in
        switch reach.connection {
        case .wifi:
            DebugLog("Reachable via WiFi")
        case .cellular:
            DebugLog("Reachable via Cellular")
        case .unavailable, .none:
            fallthrough
        default:
            DebugLog("Network not reachable")
        }
    }
    reachability?.whenUnreachable = { _ in
        DebugLog("Not reachable")
    }
    
    do {
        try reachability?.startNotifier()
    } catch {
        DebugLog("Unable to start notifier")
    }
}

2. 封装一层：

• AppDelegate.swift

ReachableManager.shared.checkNetworkState()

• ReachableManager.swift

import Foundation
import Reachability

class ReachableManager {
    
    ///不可用
    var stateUseless: Bool = true
    
    //userId 未登录-1
    static let shared = ReachableManager()
    fileprivate var reachability: Reachability?

    func checkNetworkState() {
        
        guard let reachability = try? Reachability() else { return }
        self.reachability = reachability
        
        reachability.whenReachable = { reach in
            switch reach.connection {
            case .wifi:
                DebugLog("Reachable via WiFi")
                self.stateUseless = false
            case .cellular:
                DebugLog("Reachable via Cellular")
                self.stateUseless = false
            case .unavailable, .none:
                fallthrough
            default:
                DebugLog("Network not reachable")
                self.stateUseless = true
            }
        }
        reachability.whenUnreachable = { _ in
            DebugLog("Not reachable")
            self.stateUseless = true
        }
        
        do {
            try reachability.startNotifier()
        } catch {
            DebugLog("Unable to start notifier")
        }
    }
    
    deinit {
        DebugLog("reachability.stopNotifier()")
        reachability?.stopNotifier()
    }
}