Service Call With NsUrlSession

func loginWS(parameters:[String:String], completionHandler: @escaping (Any?) -> Swift.Void) {

    guard let gitUrl = URL(string: BASE_URL+ACTION_URL) else { return }
    print(gitUrl)

    let request = NSMutableURLRequest(url: gitUrl)
    //  uncomment this and add auth token, if your project needs.
    //  let config = URLSessionConfiguration.default
    //  let authString = "Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VyX2lkIjoxMywiUGFzc3dvcmQiOiIkMmEkMTAkYVhpVm9wU3JSLjBPYmdMMUk2RU5zdU9LQzlFR0ZqNzEzay5ta1pDcENpMTI3MG1VLzR3SUsiLCJpYXQiOjE1MTczOTc5MjV9.JaSh3FvpAxFxbq8z_aZ_4OhrWO-ytBQNu6A-Fw4pZBY"
    //  config.httpAdditionalHeaders = ["Authorization" : authString]

    let session = URLSession.shared
    request.httpMethod = "POST"
    request.addValue("application/json", forHTTPHeaderField: "Content-Type")
    request.addValue("application/json", forHTTPHeaderField: "Accept")
    request.httpBody = try! JSONSerialization.data(withJSONObject: parameters, options: [])

    let task = session.dataTask(with: request as URLRequest) { data, response, error in

        guard let data = data else { return }
        do {
        //  let decoder = JSONDecoder()
        //  here replace LoginData with your codable structure.
            let gitData = try JSONDecoder().decode(LoginData.self, from: data)
            print("response data:", gitData) 
            completionHandler(gitData)
        } catch let err {
            print("Err", err)
        }
        }.resume()
}

Height Label Swift

extension UILabel

{

// SwifterSwift: Initialize a UILabel with text

    public convenience init(text: String?)

    {

self.init()

self.text = text

}

// SwifterSwift: Required height for a label

    public var requiredHeight: CGFloat

    {

let label = UILabel(frame: CGRect(x: 0, y: 0, width: frame.width, height: CGFloat.greatestFiniteMagnitude))

label.numberOfLines = 0

label.lineBreakMode = NSLineBreakMode.byWordWrapping

label.font = font

label.text = text

label.attributedText = attributedText

label.sizeToFit()

return label.frame.height

}

    

    // SwifterSwift: Required height for a label

    public var requiredWidth: CGFloat

    {

        let label = UILabel(frame: CGRect(x: 0, y: 0, width: CGFloat.greatestFiniteMagnitude, height: frame.height))

        label.numberOfLines = 0

        label.lineBreakMode = NSLineBreakMode.byWordWrapping

        label.font = font

        label.text = text

        label.attributedText = attributedText

        label.sizeToFit()

        return label.frame.width

    }

    

    func halfTextColorChange (fullText : String , changeText : String)

    {

        let strNumber: NSString = fullText as NSString

        let range = (strNumber).range(of: changeText)

        let attribute = NSMutableAttributedString.init(string: fullText)

        attribute.addAttribute(NSAttributedString.Key.foregroundColor, value: Theme.redColor , range: range)

        self.attributedText = attribute

    }

}

/*

  let TotalHeight : Int = Int(cell.lblComment.requiredHeight)

        

        return CGFloat(51+TotalHeight)

*/

Pagination Using Swift Language 4.0 Scroll and Tableview

var isDataLoading:Bool=false
var pageNo:Int=0
var limit:Int=20
var offset:Int=0 //pageNo*limit
var didEndReached:Bool=false

func scrollViewWillBeginDragging(_ scrollView: UIScrollView) {

        print("scrollViewWillBeginDragging")
        isDataLoading = false
    }



    func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
        print("scrollViewDidEndDecelerating")
    }
    //Pagination
    func scrollViewDidEndDragging(_ scrollView: UIScrollView, willDecelerate decelerate: Bool) {

            print("scrollViewDidEndDragging")
            if ((tableView.contentOffset.y + tableView.frame.size.height) >= tableView.contentSize.height)
            {
                if !isDataLoading{
                    isDataLoading = true
                    self.pageNo=self.pageNo+1
                    self.limit=self.limit+10
                    self.offset=self.limit * self.pageNo
                    loadCallLogData(offset: self.offset, limit: self.limit)

                }
            }


    }

Check Internet Connection Using Rechablity

First Insert Pod

   

pod 'ReachabilitySwift'

Add This Function In Your View Controller File

//MARK:- Network reachablity

    @objc func reachabilityChanged() -> Bool

    {

        let reachability : Reachability = Reachability()!

        

        switch reachability.connection

        {

        case .wifi:

            print("Reachable via WiFi")

            return true

            

        case .cellular:

            print("Reachable via Cellular")

            return true

            

        case .none:

            print("Network not reachable")

            return false

        }

    }

Check Connection

 let IsConnection = self.reachabilityChanged()

        

        if (IsConnection)

        {

            self.GetUserBankAccountServiceCall()

        }

        else

        {

         self.showAlert(AppName, msg:"no Internet Connection", dismissBtnTitle: OK)

        }

Call Web Service Using Alamofire

Add Pod AlamoFire

pod 'Alamofire'

Import Alamofire

@Service Using Post Method

   let urlString = "\(BASE_URL)"

        

        let param : Parameters = ["username":"\(dictUserDetail.value(forKeyPath: "username") as! String)", "newPassword":txtNewPassword.text!, "oldPassword":txtCurrentPassword.text!]

                

        Alamofire.request(urlString, method: .get, parameters: param as Dictionary ,encoding: JSONEncoding.default, headers: ["authorization":authToken,"Content-Type":"application/json"]).responseJSON

            {

                response in

                switch response.result

                {

                case .success:

          

                    print(response)

                    

                    let result = response.result.value

                    let JSON = result as! NSDictionary

                    let success = JSON.value(forKey: "success") as! String

                    

                    if (success == "1")

                    {       }

                    else

                    {

                    }

                    break

                    

                case .failure(let error):

                    print(error.localizedDescription)

                    break

                }

        }

@Service Using Get Method

let urlString = "\(BASE_URL)"

        

        let param : Parameters = ["username":"\(dictUserDetail.value(forKeyPath: "username") as! String)", "newPassword":txtNewPassword.text!, "oldPassword":txtCurrentPassword.text!]

                

        Alamofire.request(urlString, method: .post, parameters: param as Dictionary ,encoding: JSONEncoding.default, headers: ["authorization":authToken]).responseJSON

            {

                response in

                switch response.result

                {

                case .success:

          

                    print(response)

                    

                    let result = response.result.value

                    let JSON = result as! NSDictionary

                    let success = JSON.value(forKey: "success") as! String

                    

                    if (success == "1")

                    {       }

                    else

                    {

                    }

                    break

                    

                case .failure(let error):

                    print(error.localizedDescription)

                    break

                }

        }

Swift version 5.0