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
Swift 5.5, iOS 12+，没有更多的第三方库。
请检查这个要点https://gist.github.com/dimohamdy/5166ba6c88f6954fa6b23bc9f28cbe12
使用
startNetworkReachabilityObserver()
if Reachability.shared.isConnected {
print("no internet connection")
}
Code
import Network
import Foundation
class Reachability {
static var shared = Reachability()
lazy private var monitor = NWPathMonitor()
var isConnected: Bool {
return monitor.currentPath.status == .satisfied
}
func startNetworkReachabilityObserver() {
monitor.pathUpdateHandler = { path in
if path.status == .satisfied {
NotificationCenter.default.post(name: Notifications.Reachability.connected.name, object: nil)
} else if path.status == .unsatisfied {
NotificationCenter.default.post(name: Notifications.Reachability.notConnected.name, object: nil)
}
}
let queue = DispatchQueue.global(qos: .background)
monitor.start(queue: queue)
}
}
Swift 5.5, iOS 12+，没有更多的第三方库。
请检查这个要点https://gist.github.com/dimohamdy/5166ba6c88f6954fa6b23bc9f28cbe12
使用
startNetworkReachabilityObserver()
if Reachability.shared.isConnected {
print("no internet connection")
}
Code
import Network
import Foundation
class Reachability {
static var shared = Reachability()
lazy private var monitor = NWPathMonitor()
var isConnected: Bool {
return monitor.currentPath.status == .satisfied
}
func startNetworkReachabilityObserver() {
monitor.pathUpdateHandler = { path in
if path.status == .satisfied {
NotificationCenter.default.post(name: Notifications.Reachability.connected.name, object: nil)
} else if path.status == .unsatisfied {
NotificationCenter.default.post(name: Notifications.Reachability.notConnected.name, object: nil)
}
}
let queue = DispatchQueue.global(qos: .background)
monitor.start(queue: queue)
}
}
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
}
如果你的项目有一个高于或等于iOS 12的目标，并使用组合，你可以使用这一小段代码。
import Combine
import Network
enum NerworkType {
case wifi
case cellular
case loopBack
case wired
case other
}
protocol ReachabilityServiceContract {
var reachabilityInfos: PassthroughSubject<NWPath, Never> { get set }
var isNetworkAvailable: CurrentValueSubject<Bool, Never> { get set }
var typeOfCurrentConnection: PassthroughSubject<NerworkType, Never> { get set }
}
final class ReachabilityService: ReachabilityServiceContract {
var reachabilityInfos: PassthroughSubject<NWPath, Never> = .init()
var isNetworkAvailable: CurrentValueSubject<Bool, Never> = .init(false)
var typeOfCurrentConnection: PassthroughSubject<NerworkType, Never> = .init()
private let monitor: NWPathMonitor
private let backgroudQueue = DispatchQueue.global(qos: .background)
init() {
monitor = NWPathMonitor()
setUp()
}
init(with interFaceType: NWInterface.InterfaceType) {
monitor = NWPathMonitor(requiredInterfaceType: interFaceType)
setUp()
}
deinit {
monitor.cancel()
}
}
private extension ReachabilityService {
func setUp() {
monitor.pathUpdateHandler = { [weak self] path in
self?.reachabilityInfos.send(path)
switch path.status {
case .satisfied:
self?.isNetworkAvailable.send(true)
case .unsatisfied, .requiresConnection:
self?.isNetworkAvailable.send(false)
@unknown default:
self?.isNetworkAvailable.send(false)
}
if path.usesInterfaceType(.wifi) {
self?.typeOfCurrentConnection.send(.wifi)
} else if path.usesInterfaceType(.cellular) {
self?.typeOfCurrentConnection.send(.cellular)
} else if path.usesInterfaceType(.loopback) {
self?.typeOfCurrentConnection.send(.loopBack)
} else if path.usesInterfaceType(.wiredEthernet) {
self?.typeOfCurrentConnection.send(.wired)
} else if path.usesInterfaceType(.other) {
self?.typeOfCurrentConnection.send(.other)
}
}
monitor.start(queue: backgroudQueue)
}
}
只要订阅你想要跟踪的变量，你就会得到任何变化的更新。
