使用未解析的标识符self

Question

此错误不断出现在我的代码中，我需要知道如何处理它。我还是个新手，所以如果你想给我一些关于如何在Swift中编码的技巧，我会很高兴看到它们

  

使用未解析的标识符'self'

这是我的代码：

import ReachabilitySwift

class ReachabilityManager: NSObject {
    static  let shared = ReachabilityManager()  
    }

    var isNetworkAvailable : Bool {
        return reachabilityStatus != .notReachable
    }

    var reachabilityStatus: Reachability.NetworkStatus = .notReachable

    let reachability = Reachability()!
    func reachabilityChanged(notification: Notification) {
        let reachability = notification.object as! Reachability
        switch reachability.currentReachabilityStatus {
        case .notReachable:
            debugPrint("Network became unreachable")
        case .reachableViaWiFi:
            debugPrint("Network reachable through WiFi")
        case .reachableViaWWAN:
            debugPrint("Network reachable through Cellular Data")
        }
    }

    func startMonitoring() {
        NotificationCenter.default.addObserver(self,selector: #selector(self.reachabilityChanged),name: ReachabilityChangedNotification,object: reachability)
        do{
            try reachability.startNotifier()
        } catch {
            debugPrint("Could not start reachability notifier")
        }
    }

Answer 1

如果未定义self，则会发生这种情况，请确保您尝试将startMonitoring()函数添加到类，扩展或结构范围。