Changing App Wifi

HotSpot.swift

import Foundation
import NetworkExtension
import SystemConfiguration.CaptiveNetwork

public enum HotSpotError : Error, LocalizedError {
    case featureNotSupported
    
    public var localizedDescription: String {
        return "This feature is available only for iOS 11 or later."
    }
}

public class HotSpot {
    
    private let ssid : String
    private let password : String
    
    public init(ssid:String, password:String) {
        self.ssid = ssid
        self.password = password
    }
    
    public func connect(completionHandler:((Error?)->Void)? = nil) throws {
        if #available(iOS 11.0, *) {
            let configuration = NEHotspotConfiguration(ssid: ssid, passphrase: password, isWEP: false)
            configuration.joinOnce = true
            
            NEHotspotConfigurationManager.shared.apply(configuration) { error in
                completionHandler?(error)
            }
            
            return
        }
        
        throw HotSpotError.featureNotSupported
    }
    
    public static var currentSSID : String? {
        let ssidKey = "SSID"
        var ssid : String?
        
        if let interfaces = CNCopySupportedInterfaces() as? [String] {
            for interface in interfaces {
                let ifaceName = interface as CFString
                if let interfaceInfo = CNCopyCurrentNetworkInfo(ifaceName) as? [String:Any?] {
                    ssid = interfaceInfo[ssidKey] as? String
                }
            }
        }
        
        return ssid
    }
    
}