Internet connection not available retry option in iOS swift

 Problem:

I want to add retry option in a screen while i call the api method that time network was down. So i want one alert if network not available then retry option wants to be displayed in the screen.

Solution:

Method will be like below

    func showAlert(retryPressed: @escaping() -> Void) {

        let alert = UIAlertController(title: "No Internet Connection", message: "Please check your internet connection and retry", preferredStyle:UIAlertController.Style.alert)

        

        let retryAction = UIAlertAction(title: "Retry" , style: .default) { (action:UIAlertAction!) in

            alert.dismiss(animated: false)

            retryPressed()

        }

        alert.addAction(retryAction)

        

        self.present(alert, animated:true)

    }

You can call the method like below

    func apicall() {

        if InternetConnectionManager.isConnectedToNetwork() {

    } else {

            showAlert(retryPressed: {

                self.apicall()

            })

}

}

Internet connection manager file will be like below

import Foundation

import UIKit

import SystemConfiguration

public class InternetConnectionManager {

    

    

    private init() {

        

    }

    

    public static func isConnectedToNetwork() -> Bool {

        

        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) {

                

                SCNetworkReachabilityCreateWithAddress(nil, $0)

                

            }

            

        }) else {

            

            return false

        }

        var flags = SCNetworkReachabilityFlags()

        if !SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags) {

            return false

        }

        let isReachable = (flags.rawValue & UInt32(kSCNetworkFlagsReachable)) != 0

        let needsConnection = (flags.rawValue & UInt32(kSCNetworkFlagsConnectionRequired)) != 0

        return (isReachable && !needsConnection)

    }

    

}