当我试着在我的iPhone上检查网络连接时,我得到了一堆错误。有人能帮我解决这个问题吗?
代码:
import Foundation
import SystemConfiguration
public class Reachability {
class 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 = 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
}
}
代码的错误:
如果它是不可读的,错误1说:
'Int'不能转换为'SCNetworkReachabilityFlags'
错误2和3:
找不到一个超载的'init'接受提供的参数
这里是我的解决方案swift 2.3与库(reach .swift)
进入你的Podfile并添加:
pod 'ReachabilitySwift', '~> 2.4' // swift 2.3
然后进入您的终端:
pod install
然后创建一个新的文件ReachabilityManager并添加下面的代码:
import Foundation
import ReachabilitySwift
enum ReachabilityManagerType {
case Wifi
case Cellular
case None
}
class ReachabilityManager {
static let sharedInstance = ReachabilityManager()
private var reachability: Reachability!
private var reachabilityManagerType: ReachabilityManagerType = .None
private init() {
do {
self.reachability = try Reachability.reachabilityForInternetConnection()
} catch {
print("Unable to create Reachability")
return
}
NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(ReachabilityManager.reachabilityChanged(_:)),name: ReachabilityChangedNotification,object: self.reachability)
do{
try self.reachability.startNotifier()
}catch{
print("could not start reachability notifier")
}
}
@objc private func reachabilityChanged(note: NSNotification) {
let reachability = note.object as! Reachability
if reachability.isReachable() {
if reachability.isReachableViaWiFi() {
self.reachabilityManagerType = .Wifi
} else {
self.reachabilityManagerType = .Cellular
}
} else {
self.reachabilityManagerType = .None
}
}
}
extension ReachabilityManager {
func isConnectedToNetwork() -> Bool {
return reachabilityManagerType != .None
}
}
如何使用:
进入你的AppDelegate.swift并添加下面的代码:
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
ReachabilityManager.sharedInstance
}
然后,当你想检查设备是否连接到互联网时,请:
if ReachabilityManager.sharedInstance.isConnectedToNetwork() {
// Connected
} else {
// Not connected
}
在以下代码的帮助下,您可以检查网络连接的蜂窝网络以及wifi。
Swift 3.0
import UIKit
import Foundation
import SystemConfiguration
class NetworkConnection: UIViewController {
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)
guard let defaultRouteReachability = withUnsafePointer(to: &zeroAddress, {
$0.withMemoryRebound(to: sockaddr.self, capacity: 1) {
SCNetworkReachabilityCreateWithAddress(nil, $0)
}
}) else {
return false
}
var flags: SCNetworkReachabilityFlags = SCNetworkReachabilityFlags(rawValue: 0)
if SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags) == false {
return false
}
let isReachable = (flags.rawValue & UInt32(kSCNetworkFlagsReachable)) != 0
let needsConnection = (flags.rawValue & UInt32(kSCNetworkFlagsConnectionRequired)) != 0
return (isReachable && !needsConnection)
}
class func checkConnection(sender:UIViewController){
if NetworkConnection.isConnectedToNetwork() == true {
print("Connected to the internet")
// Do something
} else {
print("No internet connection")
let alertController = UIAlertController(title: "No Internet Available", message: "", preferredStyle: UIAlertControllerStyle.alert)
let okAction = UIAlertAction(title: "Ok", style: UIAlertActionStyle.default){(result:UIAlertAction) -> Void in
return
}
alertController.addAction(okAction)
sender.present(alertController, animated: true, completion: nil)
// Do something
}
}
}
从iOS 12开始,NWPathMonitor取代了Reachability。用这个:
import Network
struct Internet {
private static let monitor = NWPathMonitor()
static var active = false
static var expensive = false
/// Monitors internet connectivity changes. Updates with every change in connectivity.
/// Updates variables for availability and if it's expensive (cellular).
static func start() {
guard monitor.pathUpdateHandler == nil else { return }
monitor.pathUpdateHandler = { update in
Internet.active = update.status == .satisfied ? true : false
Internet.expensive = update.isExpensive ? true : false
}
monitor.start(queue: DispatchQueue(label: "InternetMonitor"))
}
}
在使用:
Internet.start()
if Internet.active {
// do something
}
if Internet.expensive {
// device is using Cellular data or WiFi hotspot
}