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October 12, 2018 13:14
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Reachability in Swift 4
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| // | |
| // Reachability.swift | |
| // | |
| // | |
| // Created by NETBIZ on 12/10/18. | |
| // Copyright © 2018 Netbiz.in. All rights reserved. | |
| // | |
| 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 | |
| } | |
| } |
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| // | |
| // ViewController.swift | |
| // | |
| // | |
| // Created by NETBIZ on 17/09/18. | |
| // Copyright © 2018 Netbiz.in. All rights reserved. | |
| // | |
| import UIKit | |
| class ViewController: UIViewController { | |
| override func viewDidLoad() { | |
| super.viewDidLoad() | |
| // Do any additional setup after loading the view, typically from a nib. | |
| //Check for connectivity | |
| if Reachability.isConnectedToNetwork() == true { | |
| // code to execute if internet is available | |
| } else { | |
| let alert = UIAlertController(title: "Connection Issue", message: "Please check your internet connection, you seem to be offline. Offline weather data of a previous location will be shown until you are online again. ", preferredStyle: .alert) | |
| let ok = UIAlertAction(title: "Ok", style: .default, handler: nil) | |
| alert.addAction(ok) | |
| present(alert, animated: true, completion: nil) | |
| } | |
| } | |
| override func didReceiveMemoryWarning() { | |
| super.didReceiveMemoryWarning() | |
| // Dispose of any resources that can be recreated. | |
| } | |
| } |
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