webservice to hit the url and the result

webService.swift

//
//  WebService.swift
//  ArtCaller
//
//  Created by Twistfuture on 6/9/15.
//  Copyright (c) 2015 Twist. All rights reserved.
//

import Foundation
import UIKit

@objc protocol WebServiceDelegate {
    @objc optional func CompleteDownloading ( _ service :WebService ,result : AnyObject)
}

class WebService : NSObject {
    
    var delegate : WebServiceDelegate?
    var View : UIView = UIView()
    var Process : UIActivityIndicatorView = UIActivityIndicatorView()
    var task : URLSessionDataTask!
    
    func Start(VC: UIViewController, dic : [String:String]?,url : String, onCompletion : @escaping (AnyObject) -> Void) {
        
       
            
        // print(dic)
        let win:UIWindow = UIApplication.shared.delegate!.window!!
        
        let urlString = "\(url)"
        
        print(urlString)
        
        let url = Foundation.URL(string : urlString )
        let request = NSMutableURLRequest(url : url!)
        request.httpMethod="POST"
        
        
        let boundary = NSString(format: "---------------------------147378355409831466499882746641449")
        let contentType = NSString(format: "multipart/form-data; boundary=%@",boundary)
        request.addValue(contentType as String, forHTTPHeaderField: "Content-Type")
        
        let body = NSMutableData()
        self.View.frame = CGRect(x: 0, y: 0, width: 50, height: 50)
        self.View.backgroundColor = UIColor.gray
        self.View.center = win.center
        self.View.layer.cornerRadius = 5.0
        self.View.clipsToBounds = true
        self.Process.activityIndicatorViewStyle = UIActivityIndicatorViewStyle.white
        self.Process.center = CGPoint(x: 25, y: 25)
        self.View.addSubview(self.Process)
        self.Process.startAnimating()
        VC.view.addSubview(self.View)
        if dic != nil {
            
            print(dic!)
            
            for (key, text) in dic! {
                print("Sending ----\(key)-----\(text)")
                
                body.append(NSString(format: "\r\n--%@\r\n",boundary).data(using: String.Encoding.utf8.rawValue)!)
                body.append(NSString(format:"Content-Disposition: form-data; name=\"\(key)\"\r\n\r\n" as NSString).data(using: String.Encoding.utf8.rawValue)!)
                body.append(text.data(using: String.Encoding.utf8, allowLossyConversion: true)!)
              
            }
        }
        request.httpBody = body as Data
        
        
        task = URLSession.shared.dataTask(with: request as URLRequest, completionHandler: {
            data, response, error in
            DispatchQueue.main.async(execute: {
                
                self.View.removeFromSuperview()
                
                if error != nil
                {
                    
                    let alert = UIAlertController(title: "Error", message: "Server is not responding properly.", preferredStyle: .alert)
                    
                    let cancel = UIAlertAction(title: "Retry", style: .cancel, handler: { action in
                        self.task.resume()
                    })
                    alert.addAction(cancel)
                    VC.present(alert, animated: true, completion: nil)
                    
                    
                }else{
                    
                    let srt = NSString(data: data!, encoding: String.Encoding.ascii.rawValue)
                    
                    print("Service : \(url) Data: \(srt)")
                    do {
                        let parsedObject = try JSONSerialization.jsonObject(with: data!, options: [])
                        
                        if let object = parsedObject as? NSDictionary{
                            print("Result is a dictionary");
                            onCompletion(object)
                        }else{
                            print("Result is an array");
                        }
                        
                        
                    } catch {
                        print("json error: \(error)")
                    }
                    
                    
                } })
        })
        
        if(Controller.isConnectedToNetwork()){
            print("internet connectivity found ")
            task.resume()
        }else{
            self.View.removeFromSuperview()
            print("internet connectivity not found ")
            
            let alert = UIAlertController(title: "Error", message: "internet connectivity not found", preferredStyle: .alert)
            
            let cancel = UIAlertAction(title: "Retry", style: .cancel, handler: { action in
                self.task.resume()
            })
            alert.addAction(cancel)
            VC.present(alert, animated: true, completion: nil)
            
            
        }
    
       
        
        
    }
    
 
}
var Service : WebService = WebService()