Existe-t-il un moyen de vérifier si la connexion Internet est disponible avec Swift?
Je sais qu'il existe de nombreuses bibliothèques tierces pour le faire, mais elles sont toutes écrites en Objective-C. Je cherche une alternative rapide.
Comme mentionné dans les commentaires, bien qu'il soit possible d'utiliser des bibliothèques Objective-C dans Swift, je souhaitais une solution Swift plus pure. La classe Apple Reachability existante et les bibliothèques tierces semblaient trop compliquées pour que je puisse les traduire en Swift. J'ai googlé un peu plus et je suis tombé sur cet article qui montre une méthode simple pour vérifier la disponibilité du réseau. Je me suis mis à traduire ceci en Swift. J'ai rencontré beaucoup de accrocs mais grâce à Martin R de StackOverflow, j'ai réussi à les résoudre et enfin à obtenir une solution viable dans Swift. Voici le code.
import Foundation
import SystemConfiguration
public class Reachability {
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(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 {
return false
}
let isReachable = (flags & UInt32(kSCNetworkFlagsReachable)) != 0
let needsConnection = (flags & UInt32(kSCNetworkFlagsConnectionRequired)) != 0
return isReachable && !needsConnection
}
}
Pour Swift> 3.0
public class Reachability {
public func isConnectedToNetwork() -> Bool {
var zeroAddress = sockaddr_in()
zeroAddress.sin_len = UInt8(MemoryLayout<sockaddr_in>.size)
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 = []
if !SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags) {
return false
}
if flags.isEmpty {
return false
}
let isReachable = flags.contains(.reachable)
let needsConnection = flags.contains(.connectionRequired)
return (isReachable && !needsConnection)
}
}
Cela fonctionne pour les connexions 3G et WiFi. Je l'ai également téléchargé sur mon GitHub avec un exemple de travail.
Je te donne un meilleur moyen ...
Vous devez créer une classe avec ce code
import Foundation
public class Reachability {
class func isConnectedToNetwork()->Bool{
var Status:Bool = false
let url = NSURL(string: "http://google.com/")
let request = NSMutableURLRequest(URL: url!)
request.HTTPMethod = "HEAD"
request.cachePolicy = NSURLRequestCachePolicy.ReloadIgnoringLocalAndRemoteCacheData
request.timeoutInterval = 10.0
var response: NSURLResponse?
var data = NSURLConnection.sendSynchronousRequest(request, returningResponse: &response, error: nil) as NSData?
if let httpResponse = response as? NSHTTPURLResponse {
if httpResponse.statusCode == 200 {
Status = true
}
}
return Status
}
}
Et ensuite, vous pouvez vérifier la connexion Internet n'importe où dans votre projet en utilisant ce code:
if Reachability.isConnectedToNetwork() == true {
println("Internet connection OK")
} else {
println("Internet connection FAILED")
}
Très facile!
* Cette méthode est basée sur la réponse de Vikram Pote!
Pour Swift 3.1 (iOS 10.1)
Si vous voulez faire la distinction entre le type de réseau (WiFi ou WWAN):
Vous pouvez utiliser:
func checkWiFi() -> Bool {
let networkStatus = Reachability().connectionStatus()
switch networkStatus {
case .Unknown, .Offline:
return false
case .Online(.WWAN):
print("Connected via WWAN")
return true
case .Online(.WiFi):
print("Connected via WiFi")
return true
}
}
Voici l'intégralité de Reachability-Class qui distingue les types de réseaux:
import Foundation
import SystemConfiguration
import UIKit
import SystemConfiguration.CaptiveNetwork
public let ReachabilityStatusChangedNotification = "ReachabilityStatusChangedNotification"
public enum ReachabilityType: CustomStringConvertible {
case WWAN
case WiFi
public var description: String {
switch self {
case .WWAN: return "WWAN"
case .WiFi: return "WiFi"
}
}
}
public enum ReachabilityStatus: CustomStringConvertible {
case Offline
case Online(ReachabilityType)
case Unknown
public var description: String {
switch self {
case .Offline: return "Offline"
case .Online(let type): return "Online (\(type))"
case .Unknown: return "Unknown"
}
}
}
public class Reachability {
func connectionStatus() -> ReachabilityStatus {
var zeroAddress = sockaddr_in()
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) { zeroSockAddress in
SCNetworkReachabilityCreateWithAddress(nil, zeroSockAddress)
}
}) else {
return .Unknown
}
var flags : SCNetworkReachabilityFlags = []
if !SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags) {
return .Unknown
}
return ReachabilityStatus(reachabilityFlags: flags)
}
func monitorReachabilityChanges() {
let Host = "google.com"
var context = SCNetworkReachabilityContext(version: 0, info: nil, retain: nil, release: nil, copyDescription: nil)
let reachability = SCNetworkReachabilityCreateWithName(nil, Host)!
SCNetworkReachabilitySetCallback(reachability, { (_, flags, _) in
let status = ReachabilityStatus(reachabilityFlags: flags)
NotificationCenter.default.post(name: NSNotification.Name(rawValue: ReachabilityStatusChangedNotification), object: nil, userInfo: ["Status": status.description])}, &context)
SCNetworkReachabilityScheduleWithRunLoop(reachability, CFRunLoopGetMain(), CFRunLoopMode.commonModes.rawValue)
}
}
extension ReachabilityStatus {
public init(reachabilityFlags flags: SCNetworkReachabilityFlags) {
let connectionRequired = flags.contains(.connectionRequired)
let isReachable = flags.contains(.reachable)
let isWWAN = flags.contains(.isWWAN)
if !connectionRequired && isReachable {
if isWWAN {
self = .Online(.WWAN)
} else {
self = .Online(.WiFi)
}
} else {
self = .Offline
}
}
}
SendSynchronousRequest étant obsolète, j’ai essayé de le faire, mais "return Status" a été appelé avant la fin de la réponse.
Cette réponse fonctionne bien cependant, Vérifiez la connexion Internet avec Swift
Voici ce que j'ai essayé quand même:
import Foundation
public class Reachability {
class func isConnectedToNetwork()->Bool{
var Status:Bool = false
let url = NSURL(string: "http://google.com/")
let request = NSMutableURLRequest(URL: url!)
request.HTTPMethod = "HEAD"
request.cachePolicy = NSURLRequestCachePolicy.ReloadIgnoringLocalAndRemoteCacheData
request.timeoutInterval = 10.0
let session = NSURLSession.sharedSession()
session.dataTaskWithRequest(request, completionHandler: {(data, response, error) in
print("data \(data)")
print("response \(response)")
print("error \(error)")
if let httpResponse = response as? NSHTTPURLResponse {
print("httpResponse.statusCode \(httpResponse.statusCode)")
if httpResponse.statusCode == 200 {
Status = true
}
}
}).resume()
return Status
}
}
Swift 3: Vérifications pour wifi et internet connexion:
import Foundation
import SystemConfiguration
public class Reachability {
public func isConnectedToNetwork() -> Bool {
var zeroAddress = sockaddr_in()
zeroAddress.sin_len = UInt8(MemoryLayout<sockaddr_in>.size)
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 = []
if !SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags) {
return false
}
let isReachable = flags.contains(.reachable)
let needsConnection = flags.contains(.connectionRequired)
return (isReachable && !needsConnection)
}
}
UTILISATION:
if Reachability.isConnectedToNetwork() == true {
print("Connected to the internet")
// Do something
} else {
print("No internet connection")
// Do something
}
Vous pouvez également utiliser la réponse ci-dessous.
func checkInternet(flag:Bool, completionHandler:(internet:Bool) -> Void)
{
UIApplication.sharedApplication().networkActivityIndicatorVisible = true
let url = NSURL(string: "http://www.google.com/")
let request = NSMutableURLRequest(URL: url!)
request.HTTPMethod = "HEAD"
request.cachePolicy = NSURLRequestCachePolicy.ReloadIgnoringLocalAndRemoteCacheData
request.timeoutInterval = 10.0
NSURLConnection.sendAsynchronousRequest(request, queue:NSOperationQueue.mainQueue(), completionHandler:
{(response: NSURLResponse!, data: NSData!, error: NSError!) -> Void in
UIApplication.sharedApplication().networkActivityIndicatorVisible = false
let rsp = response as NSHTTPURLResponse?
completionHandler(internet:rsp?.statusCode == 200)
})
}
func yourMethod()
{
self.checkInternet(false, completionHandler:
{(internet:Bool) -> Void in
if (internet)
{
// "Internet" mean Google
}
else
{
// No "Internet" no Google
}
})
}
Swift 3: Vérifier les connexions 3G et Wi-Fi
DispatchQueue.main.async {
let url = URL(string: "https://www.google.com")!
let request = URLRequest(url: url)
let task = URLSession.shared.dataTask(with: request) {data, response, error in
if error != nil {
// do something here...
print("Internet Connection not Available!")
}
else if let httpResponse = response as? HTTPURLResponse {
if httpResponse.statusCode == 200 {
// do something here...
print("Internet Connection OK")
}
print("statusCode: \(httpResponse.statusCode)")
}
}
task.resume()
}
if isInternetAvailable()
{
print("if called Internet Connectivity success \(isInternetAvailable())");
}else{
print("else called Internet Connectivity success \(isInternetAvailable())");
}
func isInternetAvailable() -> Bool
{
var zeroAddress = sockaddr_in()
zeroAddress.sin_len = UInt8(MemoryLayout.size(ofValue: zeroAddress))
zeroAddress.sin_family = sa_family_t(AF_INET)
let defaultRouteReachability = withUnsafePointer(to: &zeroAddress) {
$0.withMemoryRebound(to: sockaddr.self, capacity: 1) {zeroSockAddress in
SCNetworkReachabilityCreateWithAddress(nil, zeroSockAddress)
}
}
var flags = SCNetworkReachabilityFlags()
if !SCNetworkReachabilityGetFlags(defaultRouteReachability!, &flags) {
return false
}
let isReachable = flags.contains(.reachable)
let needsConnection = flags.contains(.connectionRequired)
// print(isReachable && !needsConnection)
return (isReachable && !needsConnection)
}
Dans Swift 4 Travailler