iOS Chat UI Kit

The UI Kit library is collection of custom UI Components and UI Screens design to build chat application within few minutes. UI kit is designed to avoid boilerplate code for building UI,it has three different ways to build a chat application with fully customizable UI. It will help developers to build a chat application within using various UI Components.


Before you begin, ensure you have met the following requirements:

  • You have installed the latest version of Xcode. (Above Xcode 12 Recommended)

  • iOS Chat UI Kit works for the iOS devices from iOS 11 and above.

NOTE: Please install the latest pod version on your Mac to avoid integration issues

Please follow the below steps:

sudo gem update cocoapods --pre
pod update

NOTE: If you’re building the new project, the please add below line in AppDelegate.swift

class AppDelegate: UIResponder, UIApplicationDelegate {
 var window: UIWindow?


Installing iOS Chat UI Kit

1. Setup

To install iOS UI Kit, you need to first register on Dashboard. Click here to sign up.

i. Get your Application Keys

  • Create a new app
  • Head over to the Quick Start or API & Auth Keys section and note the App ID, Auth Key, and Region.

ii. Add the CometChat Dependency

We recommend using CocoaPods, as they are the most advanced way of managing iOS project dependencies. Open a terminal window, move to your project directory, and then create a Podfile by running the following command

Create podfile using below command.

$ pod init

Add the following lines to the Podfile.


For Xcode 12 and above:

platform :ios, '11.0'

target 'YourApp' do
     pod 'CometChatPro', '3.0.900'
     pod 'CometChatCalls', '2.1.1-xc'

And then install the CometChatPro framework through CocoaPods.

pod install

If you’re facing any issues while installing pods then use below command.

pod install --repo-update

2. Configure CometChat inside your app

i. Initialize CometChat

The init() method initializes the settings required for CometChat. We suggest calling the init() method on app startup, preferably in the didFinishLaunchingWithOptions() method of the Application class.

import CometChatPro

class AppDelegate: UIResponder, UIApplicationDelegate{

   var window: UIWindow?
   let appId: String = "ENTER APP ID"
   let region: String = "ENTER REGION CODE"
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {

  let mySettings = AppSettings.AppSettingsBuilder().subscribePresenceForAllUsers().setRegion(region: region).build()
  CometChat(appId: appId ,appSettings: mySettings,onSuccess: { (isSuccess) in
                print("CometChat Pro SDK intialise successfully.")

        }) { (error) in
            print("CometChat Pro SDK failed intialise with error: \(error.errorDescription)")
        return true

Note : Make sure you replace the APP_ID with your CometChat appId and region with your app region in the above code.

ii.Log in your User

The login() method returns the User object containing all the information of the logged-in user.

let uid    = "SUPERHERO1"
let authKey = "ENTER AUTH KEY"

CometChat.login(UID: uid, apiKey: authKey, onSuccess: { (user) in

  print("Login successful: " + user.stringValue())

}) { (error) in

  print("Login failed with error: " + error.errorDescription);


Note :

  • Make sure you replace the authKey with your CometChat Auth Key in the above code.

  • We have setup 5 users for testing having UIDs: SUPERHERO1, SUPERHERO2, SUPERHERO3,SUPERHERO4 and SUPERHERO5.

3. Add UI Kit to your project

To integrate CometChat UIKit inside your app. Kindly follow the below steps:

i. Simply clone the UIKit Library from ios-chat-uikit repository.

ii. After cloning the repository, Navigate to Library folder and drag and drop Library folder inside your project’s folder.

Studio Guide

iii. Make sure you’ve selected ✅ Copy items if needed as well as ? Create groups options while adding Library inside your project.

iv. If the Library is added sucessfully, all added folders will be in Yellow color.

4. Launch CometChat UI

Studio Guide

CometChat UI is a way to launch a fully working chat application using the CometChat Kitchen Sink.In CometChat UI all the UI Components working together to give the full experience of a chat application with minimal coding effort.

To use CometChat UI user has to launch CometChatUI class. CometChatUI is a subclass of UITabbarController.

DispatchQueue.main.async {
let cometChatUI = CometChatUI()
cometChatUI.setup(withStyle: .fullScreen)
self.present(cometChatUI, animated: true, completion: nil)

Note: Please run the above code snippet in the main thread.

CometChatUI provides below method to present this activity:

  1. setup(withStyle: .fullScreen) : This will present the window in Full screen.

  2. setup(withStyle: .popover) : This will present the window as a popover.

Checkout our sample apps


Visit our Swift sample app repo to run the swift sample app.


View Github