Question

我想知道是否有最好的方法来检测互联网连接发生的任何变化

我的意思是使用此代码

import SystemConfiguration
var isConnected: Bool = false
func isConnectedToNetwork()
{

var zeroAddress = sockaddr_in(sin_len: 0, sin_family: 0, sin_port: 0, sin_addr: in_addr(s_addr: 0), sin_zero: (0, 0, 0, 0, 0, 0, 0, 0))
zeroAddress.sin_len = UInt8(sizeofValue(zeroAddress))
zeroAddress.sin_family = sa_family_t(AF_INET)

let defaultRouteReachability = withUnsafePointer(&zeroAddress) {
    SCNetworkReachabilityCreateWithAddress(nil, UnsafePointer($0)).takeRetainedValue()
}

var flags: SCNetworkReachabilityFlags = 0
if SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags) == 0 {
    self.isConnected = false
}

let isReachable = (flags & UInt32(kSCNetworkFlagsReachable)) != 0
let needsConnection = (flags & UInt32(kSCNetworkFlagsConnectionRequired)) != 0

if isReachable && !needsConnection
{
  self.isConnected = true
} 
else{
     self.isConnected = false
   }  
    }

它返回Internet连接的状态，但即使我需要在应用程序运行时继续检查Internet连接，所以我使用了此代码

NSTimer.scheduledTimerWithTimeInterval(10, target: self, selector: Selector("isConnectedToNetwork"), userInfo: nil, repeats: true)

每10秒检查一次互联网连接，但我相信有更好的方法。我的意思是使用观察者或其他东西。

比如这个

NSNotificationCenter.defaultCenter().addObserver(self, selector: "keyboardDidShow", name: UIKeyboardDidShowNotification, object: nil)

当键盘显示它检测到它并调用函数keyboardDidShow()

时

Answer 1

Swift 3.0 +

这是我设法达到的最干净的解决方案。

您需要安装此广告连播https://github.com/AFNetworking/AFNetworking

然后import AFNetworking声明NetworkReachability类。

final class NetworkReachability {
    private var previousStatus: AFNetworkReachabilityStatus = .unknown

    /// Retrieves current network status once and stops monitoring reachability.
    func getCurrentNetworkStatus(completion: ((AFNetworkReachabilityStatus) -> Void)?) {
        previousStatus = .unknown
        startMonitoring { currentStatus in
            completion?(currentStatus)
            self.stopMonitoring()
        }
    }

    /// Monitors network reachability changes until reachable status is present. Then stops monitoring.
    func getReachableNetworkStatus(completion: ((AFNetworkReachabilityStatus) -> Void)?) {
        stopMonitoring()
        startMonitoring { currentStatus in
            completion?(currentStatus)
            if currentStatus == .reachableViaWiFi || currentStatus == .reachableViaWWAN {
                self.stopMonitoring()
            }
        }
    }

    /// Monitors network reachability changes, until stopMonitoring() is called.
    func startMonitoring(newStatusCallback: ((AFNetworkReachabilityStatus) -> Void)?) {
        AFNetworkReachabilityManager.shared().startMonitoring()
        AFNetworkReachabilityManager.shared().setReachabilityStatusChange { currentStatus in
            if currentStatus != .unknown && currentStatus != self.previousStatus {
                newStatusCallback?(currentStatus)
            }
            self.previousStatus = currentStatus
        }
    }

    func stopMonitoring() {
        previousStatus = .unknown
        AFNetworkReachabilityManager.shared().stopMonitoring()
    }
}

检测Internet连接xcode swift的任何更改的最佳方法

1 个答案: