Setup

Get your Application Keys

Signup for CometChat and then:

1. Create a new app
2. Head over to the API Keys section and note the Auth Key, App ID & Region

Minimum Requirement

• Android API Level 21
• AndroidX Compatibility
• iOS 11 or higher
• Flutter SDK 1.2 or higher

Add the CometChat Dependency

1. Add the following code in your pubspec.yaml file and run pub get command.

Dart

cometchat_sdk: ^4.0.16

2. Add following code to podfile inside iOS section of your app

Ruby

post_install do |installer|

installer.pods_project.targets.each do |target|

flutter_additional_ios_build_settings(target)

//Copy from here------->

target.build_configurations.each do |build_configuration|

build_configuration.build_settings['EXCLUDED_ARCHS[sdk=iphonesimulator*]'] = 'arm64 i386'

end

//Copy TILL here------->

end

end

3. For iOS, change the deployment target to 11 or higher.
4. For iOS, navigate to your iOS folder in terminal or CMD and do pod install . For apple chip system use rosetta terminal.
5. For IOS you can set the Enabled Bitcode settings to NO present in build settings of XCODE project

Import CometChat SDK using following code in dart

Dart

import 'package:cometchat_sdk/cometchat_sdk.dart';

Initialise CometChat

The init() method initialises the settings required for CometChat. The init() method takes the below parameters:

1. appID - You CometChat App ID
2. appSettings - An object of the AppSettings class can be created using the AppSettingsBuilder class. The region field is mandatory and can be set using the setRegion() method.

The AppSettings class allows you to configure three settings:

• Region: The region where you app was created.
• Presence Subscription : Represents the subscription type for user presence (real-time online/offline status)
• autoEstablishSocketConnection(boolean value): This property takes a boolean value which when set to true informs the SDK to manage the web-socket connection internally. If set to false, it informs the SDK that the web-socket connection will be managed manually. The default value for this parameter is true. For more information on this, please check the Connection Behaviour section. The default value for this property is true.
• adminHost(adminHost: string): This method takes the admin URL as input and uses this admin URL instead of the default admin URL. This can be used in case of dedicated deployment of CometChat.
• clientHost(clientHost: string): This method takes the client URL as input and uses this client URL instead of the default client URL. This can be used in case of dedicated deployment of CometChat.

Dart

String region = "REGION";
String appId = "APP_ID";

AppSettings appSettings= (AppSettingsBuilder()
    ..subscriptionType = CometChatSubscriptionType.allUsers
    ..region= region
    ..adminHost = "" //optional
    ..clientHost = "" //optional
    ..autoEstablishSocketConnection =  true
).build();

CometChat.init(appId, appSettings, 
  onSuccess: (String successMessage) {
    debugPrint("Initialization completed successfully  $successMessage");
  }, onError: (CometChatException excep) {
    debugPrint("Initialization failed with exception: ${excep.message}");
  }
); 

We suggest you call the init() method on app startup.

Auto Mode Connection

info

Know more about auto mode connection click here

App State	Behaviour
App in foreground	Connected with WebSocket
App in background	Immediately disconnected with WebSocket

Manual Mode Connection

info

Know more about manual mode connection click here

App State	Behaviour
App in foreground	Call CometChat.connect() to create the WebSocket connection
App in background	Disconnect the WebSocket connection if no ping is received within 30 seconds after the app goes in the background.