dilipiOSDeveloper

write this code in method.

let message = messages[indexPath.row] 
if indexPath.row == 0 { 
return NSAttributedString(string: message.date.dateString(), attributes: [NSAttributedStringKey.font : UIFont.systemFont(ofSize: 13.0, weight: .bold)]) 

}else { 
let previousMessage = messages[indexPath.row - 1] 
if Calendar.current.isDate(previousMessage.date, inSameDayAs: message.date) { 
return nil 

dilipiOSDeveloper

import UIKit
import SystemConfiguration
import Foundation
import JSQMessagesViewController
import SDWebImage
import MobileCoreServices
import Alamofire


class ChatViewController: JSQMessagesViewController,UIImagePickerControllerDelegate,UINavigationControllerDelegate {

dilipiOSDeveloper

//  MonthYearPicker.swift


import UIKit

class MonthYearPickerView: UIPickerView, UIPickerViewDelegate, UIPickerViewDataSource {
    
    var months: [String]!
    var years: [Int]!

dilipiOSDeveloper

///
func printItem(_ data: Data, withFilePath filePath: String){
        
        printController = UIPrintInteractionController.shared
        printController?.delegate = self
        let printInfo = UIPrintInfo.printInfo()
        printInfo.outputType = .general
        printInfo.jobName = "QR Code Image"
        printInfo.duplex = .longEdge
        printController?.printInfo = printInfo

dilipiOSDeveloper

// Extension Used for showing Country,City from lat long 

extension UIViewController{

    func fetchCountryAndCity(location: CLLocation, completion: @escaping (String, String) -> ()) {
        CLGeocoder().reverseGeocodeLocation(location) { placemarks, error in
            if let error = error {
                print(error)
            } else if let country = placemarks?.first?.country,
                let city = placemarks?.first?.locality {

dilipiOSDeveloper

import Foundation
import CoreData
 
class DataManager:NSObject{
 
    // MARK: - Core Data stack
    
    lazy var persistentContainer: NSPersistentContainer = {
        
        let container = NSPersistentContainer(name: "MyDownloadCoreData")

dilipiOSDeveloper

    //
//  ChatViewController.swift
//  pukkading
//
//  Created by Vikas Pundora on 23/07/18.
//  Copyright © 2018 Twist. All rights reserved.
//

import UIKit
import SystemConfiguration

dilipiOSDeveloper

//
//  ChatViewController.swift
//  pukkading
//
//  Created by Vikas Pundora on 23/07/18.
//  Copyright © 2018 Twist. All rights reserved.
//

import UIKit
import SystemConfiguration

dilipiOSDeveloper

// Code for checking when cell is selected for CollectionView        

let cell = collectionView.cellForItem(at: indexPath)
        
if cell?.isSelected == true{
            
    // cell is selected
 }
else{
 // cell is not selected

dilipiOSDeveloper

import UIKit   

    struct RequestType {
      static let  POST = "POST"
      static let  GET = "GET"
    }

    enum HtttpType: String {
      case POST = "POST"
      case GET  = "GET"