दिलचस्प पोस्ट
जिंजरब्रेड पर चलाए गए एप्लिकेशन के लिए MODIFY_PHONE_STATE की अनुमति कैसे दी जाए ## और __LINE__ के साथ सी मैक्रो बनाना (स्थिति मैक्रो के साथ टोकन समापन) हस्ताक्षर किए कुंजीस्टोर का उपयोग करने के लिए एक्लिप्स कॉन्फ़िगर करें एंड्रॉइड: java.lang.SecurityException: अनुमति अस्वीकृति: आरंभ आशय रेल फील्ड 4 के साथ कस्टम फ़ील्ड / कॉलम जोड़ें Textarea के लिए घटना का आकार बदलें? जावास्क्रिप्ट का उपयोग करते हुए पोस्ट के अनुरोध मापदंडों को कैसे पढ़ें सैकएक्स और जावा का इस्तेमाल करते हुए XML उत्पन्न करना कैसे जावा में दो पूर्णांक तुलना करने के लिए? जावास्क्रिप्ट में मैं क्वेरी स्ट्रिंग मान कैसे प्राप्त करूं? एकाधिक पंक्तियों को एक पंक्ति में जोड़ने के लिए LINQ का उपयोग करें (सीएसवी गुण) आईआईएस पर यूआईवी्यूव्यू से आवेदन दस्तावेज़ फ़ोल्डर में एक छवि सहेजें Thread.sleep (x) का उपयोग करते समय मुझे अपवाद मिलता है या प्रतीक्षा करें () टेम्पलेट में मॉडल इंस्टेंस फ़ील्ड नामों और मानों पर फिराना सूची से किसी तत्व को निकालने का प्रयास करते समय मुझे एक असमर्थितऑपरेशन अपवाद क्यों मिलता है?

स्विफ्ट के साथ इंटरनेट कनेक्शन की जांच करें

जब मैं अपने आईफोन पर इंटरनेट कनेक्शन की जांच करने की कोशिश करता हूं तो मुझे त्रुटियों का एक गुच्छा मिल जाता है। क्या कोई मुझे इसे ठीक करने में सहायता कर सकता है?

कोड:

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 } } 

कोड के साथ त्रुटियां:

त्रुटियाँ

यदि यह अपठनीय है, तो त्रुटि 1 कहती है:

'आईएनटी' को 'एससीएन नेटवर्क रीबिलिटी फ्लेग्ज' के लिए परिवर्तनीय नहीं है

त्रुटि 2 और 3:

'Init' के लिए एक अधिभार नहीं मिल सका जो आपूर्ति किए गए तर्कों को स्वीकार करता है

वेब के समाधान से एकत्रित समाधान "स्विफ्ट के साथ इंटरनेट कनेक्शन की जांच करें"

Xcode 8.3 • स्विफ्ट 3.1

टिप्पणियों में वर्णित 4 जी मुद्दे को हल करने के लिए मैंने एशलेमिल्स के लिए एक संदर्भ के रूप में पहुंच योग्यता कार्यान्वयन का इस्तेमाल किया है और स्विफ्ट 3.1 के लिए रीचैबिलिटी पुनः लिखी है:


Reachability.swift फ़ाइल

 import Foundation import SystemConfiguration class Reachability { var hostname: String? var isRunning = false var isReachableOnWWAN: Bool var reachability: SCNetworkReachability? var reachabilityFlags = SCNetworkReachabilityFlags() let reachabilitySerialQueue = DispatchQueue(label: "ReachabilityQueue") init?(hostname: String) throws { guard let reachability = SCNetworkReachabilityCreateWithName(nil, hostname) else { throw Network.Error.failedToCreateWith(hostname) } self.reachability = reachability self.hostname = hostname isReachableOnWWAN = true } init?() throws { var zeroAddress = sockaddr_in() zeroAddress.sin_len = UInt8(MemoryLayout<sockaddr_in>.size) zeroAddress.sin_family = sa_family_t(AF_INET) guard let reachability = withUnsafePointer(to: &zeroAddress, { $0.withMemoryRebound(to: sockaddr.self, capacity: 1) { SCNetworkReachabilityCreateWithAddress(nil, $0) }}) else { throw Network.Error.failedToInitializeWith(zeroAddress) } self.reachability = reachability isReachableOnWWAN = true } var status: Network.Status { return !isConnectedToNetwork ? .unreachable : isReachableViaWiFi ? .wifi : isRunningOnDevice ? .wwan : .unreachable } var isRunningOnDevice: Bool = { #if (arch(i386) || arch(x86_64)) && os(iOS) return false #else return true #endif }() deinit { stop() } } extension Reachability { func start() throws { guard let reachability = reachability, !isRunning else { return } var context = SCNetworkReachabilityContext(version: 0, info: nil, retain: nil, release: nil, copyDescription: nil) context.info = Unmanaged<Reachability>.passUnretained(self).toOpaque() guard SCNetworkReachabilitySetCallback(reachability, callout, &context) else { stop() throw Network.Error.failedToSetCallout } guard SCNetworkReachabilitySetDispatchQueue(reachability, reachabilitySerialQueue) else { stop() throw Network.Error.failedToSetDispatchQueue } reachabilitySerialQueue.async { self.flagsChanged() } isRunning = true } func stop() { defer { isRunning = false } guard let reachability = reachability else { return } SCNetworkReachabilitySetCallback(reachability, nil, nil) SCNetworkReachabilitySetDispatchQueue(reachability, nil) self.reachability = nil } var isConnectedToNetwork: Bool { return isReachable && !isConnectionRequiredAndTransientConnection && !(isRunningOnDevice && isWWAN && !isReachableOnWWAN) } var isReachableViaWiFi: Bool { return isReachable && isRunningOnDevice && !isWWAN } /// Flags that indicate the reachability of a network node name or address, including whether a connection is required, and whether some user intervention might be required when establishing a connection. var flags: SCNetworkReachabilityFlags? { guard let reachability = reachability else { return nil } var flags = SCNetworkReachabilityFlags() return withUnsafeMutablePointer(to: &flags) { SCNetworkReachabilityGetFlags(reachability, UnsafeMutablePointer($0)) } ? flags : nil } /// compares the current flags with the previous flags and if changed posts a flagsChanged notification func flagsChanged() { guard let flags = flags, flags != reachabilityFlags else { return } reachabilityFlags = flags NotificationCenter.default.post(name: .flagsChanged, object: self) } /// The specified node name or address can be reached via a transient connection, such as PPP. var transientConnection: Bool { return flags?.contains(.transientConnection) == true } /// The specified node name or address can be reached using the current network configuration. var isReachable: Bool { return flags?.contains(.reachable) == true } /// The specified node name or address can be reached using the current network configuration, but a connection must first be established. If this flag is set, the kSCNetworkReachabilityFlagsConnectionOnTraffic flag, kSCNetworkReachabilityFlagsConnectionOnDemand flag, or kSCNetworkReachabilityFlagsIsWWAN flag is also typically set to indicate the type of connection required. If the user must manually make the connection, the kSCNetworkReachabilityFlagsInterventionRequired flag is also set. var connectionRequired: Bool { return flags?.contains(.connectionRequired) == true } /// The specified node name or address can be reached using the current network configuration, but a connection must first be established. Any traffic directed to the specified name or address will initiate the connection. var connectionOnTraffic: Bool { return flags?.contains(.connectionOnTraffic) == true } /// The specified node name or address can be reached using the current network configuration, but a connection must first be established. var interventionRequired: Bool { return flags?.contains(.interventionRequired) == true } /// The specified node name or address can be reached using the current network configuration, but a connection must first be established. The connection will be established "On Demand" by the CFSocketStream programming interface (see CFStream Socket Additions for information on this). Other functions will not establish the connection. var connectionOnDemand: Bool { return flags?.contains(.connectionOnDemand) == true } /// The specified node name or address is one that is associated with a network interface on the current system. var isLocalAddress: Bool { return flags?.contains(.isLocalAddress) == true } /// Network traffic to the specified node name or address will not go through a gateway, but is routed directly to one of the interfaces in the system. var isDirect: Bool { return flags?.contains(.isDirect) == true } /// The specified node name or address can be reached via a cellular connection, such as EDGE or GPRS. var isWWAN: Bool { return flags?.contains(.isWWAN) == true } /// The specified node name or address can be reached using the current network configuration, but a connection must first be established. If this flag is set /// The specified node name or address can be reached via a transient connection, such as PPP. var isConnectionRequiredAndTransientConnection: Bool { return (flags?.intersection([.connectionRequired, .transientConnection]) == [.connectionRequired, .transientConnection]) == true } } func callout(reachability: SCNetworkReachability, flags: SCNetworkReachabilityFlags, info: UnsafeMutableRawPointer?) { guard let info = info else { return } DispatchQueue.main.async { Unmanaged<Reachability>.fromOpaque(info).takeUnretainedValue().flagsChanged() } } extension Notification.Name { static let flagsChanged = Notification.Name("FlagsChanged") } struct Network { static var reachability: Reachability? enum Status: String, CustomStringConvertible { case unreachable, wifi, wwan var description: String { return rawValue } } enum Error: Swift.Error { case failedToSetCallout case failedToSetDispatchQueue case failedToCreateWith(String) case failedToInitializeWith(sockaddr_in) } } 

इसे अपने AppDelegate में जोड़ें FinishLaunchingWithOptions विधि

 do { Network.reachability = try Reachability(hostname: "www.google.com") do { try Network.reachability?.start() } catch let error as Network.Error { print(error) } catch { print(error) } } catch { print(error) } 

और एक दृश्य नियंत्रक नमूना:

 import UIKit class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() NotificationCenter.default.addObserver(self, selector: #selector(statusManager), name: .flagsChanged, object: Network.reachability) updateUserInterface() } func updateUserInterface() { guard let status = Network.reachability?.status else { return } switch status { case .unreachable: view.backgroundColor = .red case .wifi: view.backgroundColor = .green case .wwan: view.backgroundColor = .yellow } print("Reachability Summary") print("Status:", status) print("HostName:", Network.reachability?.hostname ?? "nil") print("Reachable:", Network.reachability?.isReachable ?? "nil") print("Wifi:", Network.reachability?.isReachableViaWiFi ?? "nil") } func statusManager(_ notification: Notification) { updateUserInterface() } } 

नमूना परियोजना

स्विफ्ट 3 के लिए, स्विफ्ट 4: Working in cellular and Wi - Fi

 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(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 = SCNetworkReachabilityFlags(rawValue: 0) if SCNetworkReachabilityGetFlags(defaultRouteReachability!, &flags) == false { return false } /* Only Working for WIFI let isReachable = flags == .reachable let needsConnection = flags == .connectionRequired return isReachable && !needsConnection */ // Working for Cellular and WIFI let isReachable = (flags.rawValue & UInt32(kSCNetworkFlagsReachable)) != 0 let needsConnection = (flags.rawValue & UInt32(kSCNetworkFlagsConnectionRequired)) != 0 let ret = (isReachable && !needsConnection) return ret } } 

उपयोग:

 if Reachability.isConnectedToNetwork(){ print("Internet Connection Available!") }else{ print("Internet Connection not Available!") } 

अपनी प्रोजेक्ट के अंदर एक नई स्विफ्ट फाइल बनाएं, इसे Reachability.swift नाम दें अपनी कक्षा बनाने के लिए निम्न कोड को काटें और चिपकाएं।

 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(kCFAllocatorDefault, UnsafePointer($0)) } var flags: SCNetworkReachabilityFlags = SCNetworkReachabilityFlags(rawValue: 0) if SCNetworkReachabilityGetFlags(defaultRouteReachability!, &flags) == false { return false } let isReachable = flags == .Reachable let needsConnection = flags == .ConnectionRequired return isReachable && !needsConnection } } 

इस कोड का उपयोग करके आप अपनी परियोजना में कहीं भी इंटरनेट कनेक्शन देख सकते हैं:

 if Reachability.isConnectedToNetwork() == true { println("Internet connection OK") } else { println("Internet connection FAILED") } 

यदि उपयोगकर्ता इंटरनेट से कनेक्ट नहीं है, तो आप उन्हें सूचित करने के लिए उन्हें एक चेतावनी संवाद दिखा सकते हैं।

 if Reachability.isConnectedToNetwork() == true { println("Internet connection OK") } else { println("Internet connection FAILED") var alert = UIAlertView(title: "No Internet Connection", message: "Make sure your device is connected to the internet.", delegate: nil, cancelButtonTitle: "OK") alert.show() } 

स्पष्टीकरण:

हम एक पुन: प्रयोज्य सार्वजनिक वर्ग और एक विधि बना रहे हैं जो इंटरनेट कनेक्टिविटी की जांच के लिए प्रोजेक्ट में कहीं भी इस्तेमाल किया जा सकता है। हमें फाउंडेशन और सिस्टम कॉन्फ़िगरेशन फ़्रेमवर्क जोड़ने की आवश्यकता है।

पब्लिक क्लास isConnectedToNetwork() -> Bool { } , विधि isConnectedToNetwork() -> Bool { } बूल isConnectedToNetwork() -> Bool { } इंटरनेट कनेक्टिविटी के बारे में एक बूल वेल्यू वापस करेगा। यदि हम मामले पर आवश्यक कार्रवाई करने के लिए एक लूप का उपयोग करते हैं। मुझे उम्मीद है कि यह पर्याप्त है चीयर्स!

मैंने कोको पॉड्स / निर्भरता प्रबंधक के बिना एशले मिल की रसीबिलिटी कक्षा को लागू करने की जांच की है। यह विचार है कि परियोजना में रीचैबिलिटी निर्भरता को मुक्त करना है।

Xcode 7.2 – स्विफ्ट 2.1

1) https://github.com/ashleymills/Reachability.Swift प्रोजेक्ट में रीचैबिलिटी क्लास को जोड़ें डाउनलोड करें।

नोट: जोड़ते समय, कृपया सुनिश्चित करें कि 'यदि आवश्यक हो तो आइटम कॉपी करें' को चेक किया गया है।

2) एक AppManager.Swift वर्ग बनाओ। यह वर्ग सार्वजनिक मॉडल वर्ग के रूप में पूरा करेगा जहां सार्वजनिक विधियों और डेटा को जोड़ा जाएगा और किसी भी उपकुलपति में उपयोग किया जा सकता है।

 // AppManager.swift import UIKit import Foundation class AppManager: NSObject{ var delegate:AppManagerDelegate? = nil private var _useClosures:Bool = false private var reachability: Reachability? private var _isReachability:Bool = false private var _reachabiltyNetworkType :String? var isReachability:Bool { get {return _isReachability} } var reachabiltyNetworkType:String { get {return _reachabiltyNetworkType! } } // Create a shared instance of AppManager final class var sharedInstance : AppManager { struct Static { static var instance : AppManager? } if !(Static.instance != nil) { Static.instance = AppManager() } return Static.instance! } // Reachability Methods func initRechabilityMonitor() { print("initialize rechability...") do { let reachability = try Reachability.reachabilityForInternetConnection() self.reachability = reachability } catch ReachabilityError.FailedToCreateWithAddress(let address) { print("Unable to create\nReachability with address:\n\(address)") return } catch {} if (_useClosures) { reachability?.whenReachable = { reachability in self.notifyReachability(reachability) } reachability?.whenUnreachable = { reachability in self.notifyReachability(reachability) } } else { self.notifyReachability(reachability!) } do { try reachability?.startNotifier() } catch { print("unable to start notifier") return } } private func notifyReachability(reachability:Reachability) { if reachability.isReachable() { self._isReachability = true //Determine Network Type if reachability.isReachableViaWiFi() { self._reachabiltyNetworkType = CONNECTION_NETWORK_TYPE.WIFI_NETWORK.rawValue } else { self._reachabiltyNetworkType = CONNECTION_NETWORK_TYPE.WWAN_NETWORK.rawValue } } else { self._isReachability = false self._reachabiltyNetworkType = CONNECTION_NETWORK_TYPE.OTHER.rawValue } NSNotificationCenter.defaultCenter().addObserver(self, selector: "reachabilityChanged:", name: ReachabilityChangedNotification, object: reachability) } func reachabilityChanged(note: NSNotification) { let reachability = note.object as! Reachability dispatch_async(dispatch_get_main_queue()) { if (self._useClosures) { self.reachability?.whenReachable = { reachability in self.notifyReachability(reachability) } self.reachability?.whenUnreachable = { reachability in self.notifyReachability(reachability) } } else { self.notifyReachability(reachability) } self.delegate?.reachabilityStatusChangeHandler(reachability) } } deinit { reachability?.stopNotifier() if (!_useClosures) { NSNotificationCenter.defaultCenter().removeObserver(self, name: ReachabilityChangedNotification, object: nil) } } } 

3) एक प्रतिनिधि वर्ग बनाओ। कनेक्टिविटी स्थिति को सूचित करने के लिए मैं प्रतिनिधि विधि का उपयोग करता हूं

 // Protocols.swift import Foundation @objc protocol AppManagerDelegate:NSObjectProtocol { func reachabilityStatusChangeHandler(reachability:Reachability) } 

4) UIViewController (वंशानुक्रम विधि) के जनक वर्ग बनाओ अभिभावक वर्ग के पास ऐसे सभी तरीके हैं जो सभी बाल वीसीज पहुंच योग्य हैं।

 // UIappViewController.swift import UIKit class UIappViewController: UIViewController,AppManagerDelegate { var manager:AppManager = AppManager.sharedInstance override func viewDidLoad() { super.viewDidLoad() manager.delegate = self } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() } func reachabilityStatusChangeHandler(reachability: Reachability) { if reachability.isReachable() { print("isReachable") } else { print("notReachable") } } } 

5) AppDelegate में रीयल टाइम इंटरनेट कनेक्टिविटी मॉनिटरिंग प्रारंभ करें।

 func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool { AppManager.sharedInstance.initRechabilityMonitor() return true } 

6) मैंने लगातार इन्मान मूल्यों को संग्रहीत करने के लिए एक स्विफ्ट फाइल नाम ऐप रेफरीमेंट को जोड़ा है।

 // AppReference.swift import Foundation enum CONNECTION_NETWORK_TYPE : String { case WIFI_NETWORK = "Wifi" case WWAN_NETWORK = "Cellular" case OTHER = "Other" } 

7) व्यू नियंत्रक पर (उदा। आप केवल एपीआई कॉल करना चाहते हैं, अगर नेटवर्क उपलब्ध है)

 // ViewController.swift import UIKit class ViewController: UIappViewController { var reachability:Reachability? override func viewDidLoad() { super.viewDidLoad() manager.delegate = self if(AppManager.sharedInstance.isReachability) { print("net available") //call API from here. } else { dispatch_async(dispatch_get_main_queue()) { print("net not available") //Show Alert } } //Determine Network Type if(AppManager.sharedInstance.reachabiltyNetworkType == "Wifi") { print(".Wifi") } else if (AppManager.sharedInstance.reachabiltyNetworkType == "Cellular") { print(".Cellular") } else { dispatch_async(dispatch_get_main_queue()) { print("Network not reachable") } } } override func viewWillAppear(animated: Bool) { } override func didReceiveMemoryWarning() { } } 

नमूना @ https://github.com/alvinreuben/Reachability- नमूना डाउनलोड किया जा सकता है

स्विफ्ट 3.1- https://github.com/alvinvgeorge/Reachability-UpgradedToSwift3 के लिए उन्नत

बस अपने आप के लिए यह पता लगाया

एक्सकोड: 7.3.1, आईओएस 9.3.3

मेरी प्रोजेक्ट में ऐशलेमिल्स / रीचाबिलिटी.Swift का उपयोग करके Reachability.Swift का उपयोग करके, मैंने निम्न फ़ंक्शन बनाया है:

 func hasConnectivity() -> Bool { do { let reachability: Reachability = try Reachability.reachabilityForInternetConnection() let networkStatus: Int = reachability.currentReachabilityStatus.hashValue return (networkStatus != 0) } catch { // Handle error however you please return false } } 

बस कॉल के पास hasConnectivity() जहां कभी आपको कनेक्शन की जांच करने की आवश्यकता होती है। यह वाईफ़ाई के साथ ही सेलुलर के लिए काम करता है


ऐशलेमिल्स की रीचैबिलिटी को जोड़ना। ताकि लोगों को साइट्स के बीच स्थानांतरित करना न हो।

 Copyright (c) 2014, Ashley Mills All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ // Reachability.swift version 2.2beta2 import SystemConfiguration import Foundation public enum ReachabilityError: ErrorType { case FailedToCreateWithAddress(sockaddr_in) case FailedToCreateWithHostname(String) case UnableToSetCallback case UnableToSetDispatchQueue } public let ReachabilityChangedNotification = "ReachabilityChangedNotification" func callback(reachability:SCNetworkReachability, flags: SCNetworkReachabilityFlags, info: UnsafeMutablePointer<Void>) { let reachability = Unmanaged<Reachability>.fromOpaque(COpaquePointer(info)).takeUnretainedValue() dispatch_async(dispatch_get_main_queue()) { reachability.reachabilityChanged(flags) } } public class Reachability: NSObject { public typealias NetworkReachable = (Reachability) -> () public typealias NetworkUnreachable = (Reachability) -> () public enum NetworkStatus: CustomStringConvertible { case NotReachable, ReachableViaWiFi, ReachableViaWWAN public var description: String { switch self { case .ReachableViaWWAN: return "Cellular" case .ReachableViaWiFi: return "WiFi" case .NotReachable: return "No Connection" } } } // MARK: - *** Public properties *** public var whenReachable: NetworkReachable? public var whenUnreachable: NetworkUnreachable? public var reachableOnWWAN: Bool public var notificationCenter = NSNotificationCenter.defaultCenter() public var currentReachabilityStatus: NetworkStatus { if isReachable() { if isReachableViaWiFi() { return .ReachableViaWiFi } if isRunningOnDevice { return .ReachableViaWWAN } } return .NotReachable } public var currentReachabilityString: String { return "\(currentReachabilityStatus)" } private var previousFlags: SCNetworkReachabilityFlags? // MARK: - *** Initialisation methods *** required public init(reachabilityRef: SCNetworkReachability) { reachableOnWWAN = true self.reachabilityRef = reachabilityRef } public convenience init(hostname: String) throws { let nodename = (hostname as NSString).UTF8String guard let ref = SCNetworkReachabilityCreateWithName(nil, nodename) else { throw ReachabilityError.FailedToCreateWithHostname(hostname) } self.init(reachabilityRef: ref) } public class func reachabilityForInternetConnection() throws -> Reachability { var zeroAddress = sockaddr_in() zeroAddress.sin_len = UInt8(sizeofValue(zeroAddress)) zeroAddress.sin_family = sa_family_t(AF_INET) guard let ref = withUnsafePointer(&zeroAddress, { SCNetworkReachabilityCreateWithAddress(nil, UnsafePointer($0)) }) else { throw ReachabilityError.FailedToCreateWithAddress(zeroAddress) } return Reachability(reachabilityRef: ref) } public class func reachabilityForLocalWiFi() throws -> Reachability { var localWifiAddress: sockaddr_in = sockaddr_in(sin_len: __uint8_t(0), sin_family: sa_family_t(0), sin_port: in_port_t(0), sin_addr: in_addr(s_addr: 0), sin_zero: (0, 0, 0, 0, 0, 0, 0, 0)) localWifiAddress.sin_len = UInt8(sizeofValue(localWifiAddress)) localWifiAddress.sin_family = sa_family_t(AF_INET) // IN_LINKLOCALNETNUM is defined in <netinet/in.h> as 169.254.0.0 let address: UInt32 = 0xA9FE0000 localWifiAddress.sin_addr.s_addr = in_addr_t(address.bigEndian) guard let ref = withUnsafePointer(&localWifiAddress, { SCNetworkReachabilityCreateWithAddress(nil, UnsafePointer($0)) }) else { throw ReachabilityError.FailedToCreateWithAddress(localWifiAddress) } return Reachability(reachabilityRef: ref) } // MARK: - *** Notifier methods *** public func startNotifier() throws { guard !notifierRunning else { return } var context = SCNetworkReachabilityContext(version: 0, info: nil, retain: nil, release: nil, copyDescription: nil) context.info = UnsafeMutablePointer(Unmanaged.passUnretained(self).toOpaque()) if !SCNetworkReachabilitySetCallback(reachabilityRef!, callback, &context) { stopNotifier() throw ReachabilityError.UnableToSetCallback } if !SCNetworkReachabilitySetDispatchQueue(reachabilityRef!, reachabilitySerialQueue) { stopNotifier() throw ReachabilityError.UnableToSetDispatchQueue } // Perform an intial check dispatch_async(reachabilitySerialQueue) { () -> Void in let flags = self.reachabilityFlags self.reachabilityChanged(flags) } notifierRunning = true } public func stopNotifier() { defer { notifierRunning = false } guard let reachabilityRef = reachabilityRef else { return } SCNetworkReachabilitySetCallback(reachabilityRef, nil, nil) SCNetworkReachabilitySetDispatchQueue(reachabilityRef, nil) } // MARK: - *** Connection test methods *** public func isReachable() -> Bool { let flags = reachabilityFlags return isReachableWithFlags(flags) } public func isReachableViaWWAN() -> Bool { let flags = reachabilityFlags // Check we're not on the simulator, we're REACHABLE and check we're on WWAN return isRunningOnDevice && isReachable(flags) && isOnWWAN(flags) } public func isReachableViaWiFi() -> Bool { let flags = reachabilityFlags // Check we're reachable if !isReachable(flags) { return false } // Must be on WiFi if reachable but not on an iOS device (ie simulator) if !isRunningOnDevice { return true } // Check we're NOT on WWAN return !isOnWWAN(flags) } // MARK: - *** Private methods *** private var isRunningOnDevice: Bool = { #if (arch(i386) || arch(x86_64)) && os(iOS) return false #else return true #endif }() private var notifierRunning = false private var reachabilityRef: SCNetworkReachability? private let reachabilitySerialQueue = dispatch_queue_create("uk.co.ashleymills.reachability", DISPATCH_QUEUE_SERIAL) private func reachabilityChanged(flags: SCNetworkReachabilityFlags) { guard previousFlags != flags else { return } if isReachableWithFlags(flags) { if let block = whenReachable { block(self) } } else { if let block = whenUnreachable { block(self) } } notificationCenter.postNotificationName(ReachabilityChangedNotification, object:self) previousFlags = flags } private func isReachableWithFlags(flags: SCNetworkReachabilityFlags) -> Bool { if !isReachable(flags) { return false } if isConnectionRequiredOrTransient(flags) { return false } if isRunningOnDevice { if isOnWWAN(flags) && !reachableOnWWAN { // We don't want to connect when on 3G. return false } } return true } // WWAN may be available, but not active until a connection has been established. // WiFi may require a connection for VPN on Demand. private func isConnectionRequired() -> Bool { return connectionRequired() } private func connectionRequired() -> Bool { let flags = reachabilityFlags return isConnectionRequired(flags) } // Dynamic, on demand connection? private func isConnectionOnDemand() -> Bool { let flags = reachabilityFlags return isConnectionRequired(flags) && isConnectionOnTrafficOrDemand(flags) } // Is user intervention required? private func isInterventionRequired() -> Bool { let flags = reachabilityFlags return isConnectionRequired(flags) && isInterventionRequired(flags) } private func isOnWWAN(flags: SCNetworkReachabilityFlags) -> Bool { #if os(iOS) return flags.contains(.IsWWAN) #else return false #endif } private func isReachable(flags: SCNetworkReachabilityFlags) -> Bool { return flags.contains(.Reachable) } private func isConnectionRequired(flags: SCNetworkReachabilityFlags) -> Bool { return flags.contains(.ConnectionRequired) } private func isInterventionRequired(flags: SCNetworkReachabilityFlags) -> Bool { return flags.contains(.InterventionRequired) } private func isConnectionOnTraffic(flags: SCNetworkReachabilityFlags) -> Bool { return flags.contains(.ConnectionOnTraffic) } private func isConnectionOnDemand(flags: SCNetworkReachabilityFlags) -> Bool { return flags.contains(.ConnectionOnDemand) } func isConnectionOnTrafficOrDemand(flags: SCNetworkReachabilityFlags) -> Bool { return !flags.intersect([.ConnectionOnTraffic, .ConnectionOnDemand]).isEmpty } private func isTransientConnection(flags: SCNetworkReachabilityFlags) -> Bool { return flags.contains(.TransientConnection) } private func isLocalAddress(flags: SCNetworkReachabilityFlags) -> Bool { return flags.contains(.IsLocalAddress) } private func isDirect(flags: SCNetworkReachabilityFlags) -> Bool { return flags.contains(.IsDirect) } private func isConnectionRequiredOrTransient(flags: SCNetworkReachabilityFlags) -> Bool { let testcase:SCNetworkReachabilityFlags = [.ConnectionRequired, .TransientConnection] return flags.intersect(testcase) == testcase } private var reachabilityFlags: SCNetworkReachabilityFlags { guard let reachabilityRef = reachabilityRef else { return SCNetworkReachabilityFlags() } var flags = SCNetworkReachabilityFlags() let gotFlags = withUnsafeMutablePointer(&flags) { SCNetworkReachabilityGetFlags(reachabilityRef, UnsafeMutablePointer($0)) } if gotFlags { return flags } else { return SCNetworkReachabilityFlags() } } override public var description: String { var W: String if isRunningOnDevice { W = isOnWWAN(reachabilityFlags) ? "W" : "-" } else { W = "X" } let R = isReachable(reachabilityFlags) ? "R" : "-" let c = isConnectionRequired(reachabilityFlags) ? "c" : "-" let t = isTransientConnection(reachabilityFlags) ? "t" : "-" let i = isInterventionRequired(reachabilityFlags) ? "i" : "-" let C = isConnectionOnTraffic(reachabilityFlags) ? "C" : "-" let D = isConnectionOnDemand(reachabilityFlags) ? "D" : "-" let l = isLocalAddress(reachabilityFlags) ? "l" : "-" let d = isDirect(reachabilityFlags) ? "d" : "-" return "\(W)\(R) \(c)\(t)\(i)\(C)\(D)\(l)\(d)" } deinit { stopNotifier() reachabilityRef = nil whenReachable = nil whenUnreachable = nil } } 

अगर कोई पहले से ही अलामॉफ़र का प्रयोग कर रहा है –

 struct Connectivity { static let sharedInstance = NetworkReachabilityManager()! static var isConnectedToInternet:Bool { return self.sharedInstance.isReachable } 

}

उपयोग:

  if Connectivity.isConnectedToInternet { print("Connected") } else{ print("No Internet") } 

मैंने NSTimer और Alamofire का उपयोग कर अपना खुद का समाधान बना लिया है:

 import Alamofire public class ConnectionHelper: NSObject { var request: Alamofire.Request? func isInternetConnected(completionHandler: Bool -> Void) { NSTimer.scheduledTimerWithTimeInterval(5.0, target: self, selector: "requestTimeout", userInfo: nil, repeats: false) request = Alamofire .request( Method.HEAD, "http://www.testurl.com" ) .response { response in if response.3?.code == -999 { completionHandler( false ) } else { completionHandler( true ) } } } func requestTimeout() { request!.cancel() } } 

The NSTimer is used as a timeout, and was used due to unreliable results using the Alamofire timeout. The request should be made to a URL you trust to be reliable, such as your own server or the server that is hosting the services you depend on.

When the timer expires, the request is cancelled and the results are returned using a completion handler.

उपयोग:

 ConnectionHelper().isInternetConnected() { internetConnected in if internetConnected { // Connected } else { // Not connected } } 

If you are using Alamofire, you can do something like this:

 let configuration = NSURLSessionConfiguration.defaultSessionConfiguration() configuration.timeoutIntervalForRequest = 15 //Set timeouts in sec configuration.timeoutIntervalForResource = 15 let alamoFireManager = Alamofire.Manager(configuration:configuration) alamoFireManager?.request(.GET, "https://yourURL.com", parameters: headers, encoding: .URL) .validate() .responseJSON { response in if let error = response.result.error { switch error.code{ case -1001: print("Slow connection") return case -1009: print("No Connection!") return default: break } } 

here my solution for swift 2.3 with the lib ( Reachability.swift )

Go into your Podfile and add :

 pod 'ReachabilitySwift', '~> 2.4' // swift 2.3 

Then into your terminal :

 pod install 

Then create a new file ReachabilityManager and add code below :

 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 } } 

How use it:

go into your AppDelegate.swift and add the code below :

 func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool { ReachabilityManager.sharedInstance } 

Then when you want to check if the device is connected to internet do :

 if ReachabilityManager.sharedInstance.isConnectedToNetwork() { // Connected } else { // Not connected } 

With the help of below code you can check for internet Connection for both cellular network as well as for wifi. language – 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 } } } 

For swift 3, I couldn't use just reachability from RAJAMOHAN-S solutions since it returns "true" if there is WiFi but no Internet. Thus, I implemented second validation via URLSession class and completion handler.

Here is the whole class.

 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(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 = SCNetworkReachabilityFlags(rawValue: 0) if SCNetworkReachabilityGetFlags(defaultRouteReachability!, &flags) == false { return false } // Working for Cellular and WIFI let isReachable = (flags.rawValue & UInt32(kSCNetworkFlagsReachable)) != 0 let needsConnection = (flags.rawValue & UInt32(kSCNetworkFlagsConnectionRequired)) != 0 let ret = (isReachable && !needsConnection) return ret } class func isInternetAvailable(webSiteToPing: String?, completionHandler: @escaping (Bool) -> Void) { // 1. Check the WiFi Connection guard isConnectedToNetwork() else { completionHandler(false) return } // 2. Check the Internet Connection var webAddress = "https://www.google.com" // Default Web Site if let _ = webSiteToPing { webAddress = webSiteToPing! } guard let url = URL(string: webAddress) else { completionHandler(false) print("could not create url from: \(webAddress)") return } let urlRequest = URLRequest(url: url) let session = URLSession.shared let task = session.dataTask(with: urlRequest, completionHandler: { (data, response, error) in if error != nil || response == nil { completionHandler(false) } else { completionHandler(true) } }) task.resume() } } 

And you call this like this, for example:

 Reachability.isInternetAvailable(webSiteToPing: nil) { (isInternetAvailable) in guard isInternetAvailable else { // Inform user for example return } // Do some action if there is Internet }