如何在Swift 3或Swift 4中检查互联网连接？
如何在Swift 3或Swift 4中检查互联网连接？
提问于 2016-11-11 12:31:53
我试过在Swift 3中检查互联网连接，但代码对我不起作用。
class func isConnectedToNetwork() -> Bool {
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(MemoryLayout.size(ofValue: zeroAddress))
zeroAddress.sin_family = sa_family_t(AF_INET)
let defaultRouteReachability = withUnsafePointer(&zeroAddress) {
SCNetworkReachabilityCreateWithAddress(nil, UnsafePointer($0)).takeRetainedValue()
}
var flags: SCNetworkReachabilityFlags = SCNetworkReachabilityFlags(rawValue: UInt32(0))
if SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags) == 0 {
return false
}
let isReachable = (flags & UInt32(kSCNetworkFlagsReachable)) != 0
let needsConnection = (flags & UInt32(kSCNetworkFlagsConnectionRequired)) != 0
return (isReachable && !needsConnection) ? true : false
}我还导入了SystemConfiguration框架。请建议如何检查。
回答 3
Stack Overflow用户
发布于 2017-03-26 16:59:26
最新的swift3代码
在这里，检查互联网连接的最简单方法是使用iOS reachability。选中以下链接并下载将可访问性文件添加到您的项目中必须且应该添加.you系统配置框架已添加到项目中
[1]: https://github.com/ashleymills/Reachability.swift/tree/feature/ios10完成上述工作后，只需编写检查网络connection.here的代码，我也在编写一些警报消息。
func networkStatusChanged(_ notification: Notification) {
let userInfo = (notification as NSNotification).userInfo
print(userInfo!)
}
func interNetChecking( ) {
let status = Reach().connectionStatus()
switch status {
case .unknown, .offline:
let alert = UIAlertController(title: "Check", message: "Internet Connection is Required at first time running the app to load images and videos ", preferredStyle: UIAlertControllerStyle.alert)
alert.addAction(UIAlertAction(title: "Cancel", style: UIAlertActionStyle.default, handler: nil))
DispatchQueue.main.async(execute: {
self.present(alert, animated: true, completion: nil)
})
print("Not connected")
case .online(.wwan):
print("Connected via WWAN")
case .online(.wiFi):
print("Connected via WiFi")
}
}Stack Overflow用户
发布于 2016-11-11 14:11:59
func isConnectedToNetwork() -> Bool {
var zeroAddress = sockaddr_in()
zeroAddress.sin_len = UInt8(sizeofValue(zeroAddress))
zeroAddress.sin_family = sa_family_t(AF_INET)
let defaultRouteReachability = withUnsafePointer(&zeroAddress) {
SCNetworkReachabilityCreateWithAddress(nil, UnsafePointer($0))
}
var flags = SCNetworkReachabilityFlags()
if !SCNetworkReachabilityGetFlags(defaultRouteReachability!, &flags) {
return false
}
let isReachable = (flags.rawValue & UInt32(kSCNetworkFlagsReachable)) != 0
let needsConnection = (flags.rawValue & UInt32(kSCNetworkFlagsConnectionRequired)) != 0
return (isReachable && !needsConnection)
}problemstucks.com
Stack Overflow用户
发布于 2017-11-21 12:38:16
在Alamofire的情况下
import Alamofire//添加到您的viewDidLoad()或AppDelegate中，如下所示
let reachabilityManager = NetworkReachabilityManager()
reachabilityManager.listener = { status in
switch status {
case .notReachable:
print("The network is not reachable")
self.onInternetDisconnection()
case .unknown :
print("It is unknown whether the network is reachable")
self.onInternetDisconnection() // not sure what to do for this case
case .reachable(.ethernetOrWiFi):
print("The network is reachable over the WiFi connection")
self.onInternetConnection()
case .reachable(.wwan):
print("The network is reachable over the WWAN connection")
self.onInternetConnection()
}
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/40541141
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