Push Notifications (Legacy)

Legacy Notice: This extension is already included as part of the core messaging experience and is scheduled for deprecation in the near future.Please note: Legacy extensions are no longer actively maintained and will not receive feature updates or enhancements.

Learn how to send push notifications to mobile apps and desktop browsers. Push notifications will work in iOS and Android apps as well as desktop browsers that support Push API. These browsers include:

Chrome 50+
Firefox 44+
Edge 17+
Opera 42+

Implementation

If you are new and want to implement Token-based Push Notifications in your app, follow our platform-specific guides:
1. JavaScript (Web)
2. Android
3. iOS
4. Flutter
5. React Native
6. Capacitor, Cordova & Ionic
For Android and iOS we also have setup that allows the usage of Native calling screens:
1. Android - Connection Service
2. iOS - APNs
Token management to manage FCM and APNs tokens for the logged-in user.
Mute functionality to mute certain conversations or implement DND.

Web

The Push Notification extension allows you to send push notifications to mobile apps and desktop browsers. Push notifications will work in all desktop browsers which support Push API. These include:

Chrome 50+
Firefox 44+
Edge 17+
Opera 42+

I want to checkout the sample app

Push notifications sample app for Web (React)View on Github

Firebase Project Setup

Visit Firebase Console and login/signup using your Gmail ID.

Step 1: Create a new Firebase Project

This is a simple 3 step process where:

You give a name to your project
Add Google Analytics to your project (Optional)
Configure Google Analytics account (Optional)

Click on Create and you are ready to go.

Step 2: Add Firebase to your Web App

Click on the Web icon on the below screen and Register your app with a nickname.
Once done, click on Continue to Console.

Step 3: Download the service account file

Extension settings

Step 1: Enable the extension

Login to CometChat and select your app.
Go to the Extensions section and Enable the Push Notifications.
Open the settings for the extension and add all the mentioned settings and hit save.

Step 2: Save your settings

On the Settings page you need to enter the following:

Set extension version

If you are setting it for the first time, Select V2 to start using the token-based version of the Push Notification extension.
If you already have an app using V1 and want to migrate your app to use V2, then Select V1 & V2 option. This ensures that the users viewing the older version of your app also receive Push Notifications.
Eventually, when all your users are on the latest version of your app, you can change this option to V2, thus turning off V1 (Topic-based) Push Notifications completely.

Select the platforms that you want to support

Select from Web, Android, Ionic (Deprecated), React Native, Flutter & iOS.

Notification payload settings

You can control if the notification key should be in the Payload or not. Learn more about the FCM Messages here.

Push payload message options

The maximum payload size supported by FCM and APNs for push notifications is approximately 4 KB. Due to the inclusion of CometChat’s message object, the payload size may exceed this limit, potentially leading to non-delivery of push notifications for certain messages. The options provided allow you to remove the sender’s metadata, receiver’s metadata, message metadata and trim the content of the text field.
The message metadata includes the outputs of the Thumbnail Generation, Image Moderation, and Smart Replies extensions. You may want to retain this metadata if you need to customize the notification displayed to the end user based on these outputs.

Notification Triggers

Select the triggers for sending Push Notifications. These triggers can be classified into 3 main categories:
1. Message Notifications
2. Call Notifications
3. Group Notifications
These are pretty self-explanatory and you can toggle them as per your requirement.

Web App Setup

Step 1: Folder and files setup

Create a folder with the following three files:

Files	Description
index.html	Displays a simple User Login Form.
PushNotification.js	File with the logic to initialize CometChat and Firebase.
firebase-messaging-sw.js	Service worker shows Push Notifications when the tab is either in the background or closed.

Step 2: Add the Firebase Config to the HTML File

Go to the Firebase Console and click on the Web app and open up the Settings page.
Go to the “General” tab on the Settings page.
Scroll down and copy the Firebase SDK snippet and paste in the <head> tag of your index.html file.

Step 3: Setup index.html file

Include the latest CometChat library using CDN.
Register the service worker file.
Also, include the PushNotification.js.
The <body> has a simple form:
1. Text input for UID.
2. Login button.
3. Logout button.

Once done, your index.html file should look like this:

HTML

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Push Notification Sample</title>

  <!-- The core Firebase JS SDK is always required and must be listed first -->
  <script src="https://www.gstatic.com/firebasejs/7.21.0/firebase-app.js"></script>
  <script src="https://www.gstatic.com/firebasejs/7.21.0/firebase-messaging.js"></script>

  <!-- Firebase config and initialization -->
  <script>
    const FIREBASE_CONFIG = {
      // Your Config
    };
    // Initialize Firebase only once
    firebase.initializeApp(FIREBASE_CONFIG);
  </script>

  <!-- Register the service worker. -->
  <script>
    if ('serviceWorker' in navigator) {
      window.addEventListener('load', () => {
        navigator.serviceWorker.register('/firebase-messaging-sw.js');
      });
    }
  </script>

  <!-- CometChat import -->
  <script type="text/javascript" src="https://unpkg.com/@cometchat/chat-sdk-javascript/CometChat.js"></script>

  <!-- Our app file with the CometChat and Firebase logic -->
  <script src="PushNotification.js" defer></script>
</head>

<body>
  Push Notifications (Legacy)</br>
  <input type="text" id='uid'></input></br>
  <button id='loginButton'>Login</button>
  <button id='logoutButton'>Logout</button>
</body>

</html>

Step 4: Setup the service worker file

Use importScripts to include the firebase-app.js and firebase-messaging.js files in the service worker.
Also paste in the FIREBASE_CONFIG object again in this file.
Initialize the Firebase object using the config.
Call the messaging() on the Firebase object.

Once done, your firebase-messaging-sw.js file should look like this:

JavaScript

importScripts('https://www.gstatic.com/firebasejs/7.21.0/firebase-app.js');
importScripts(
  'https://www.gstatic.com/firebasejs/7.21.0/firebase-messaging.js'
);

const FIREBASE_CONFIG = {
  // Your Config
};

// Initialize firebase in the service worker.
firebase.initializeApp(FIREBASE_CONFIG);

// Start Receiving Push Notifications when
// the browser tab is in the background or closed.
firebase.messaging();

Step 5: Setup the PushNotification.js file

Now our simple web app has the following:

Setup required to start using Firebase SDK.
Service worker registration when the index.html loads for the first time.

Next, we can focus on the flow to setup CometChat login process along with the steps required to setup Push Notifications using Firebase Cloud Messaging (or FCM). During login:

Initialize CometChat.
Login using CometChat user.
Ask for the User’s permission to show Push Notifications.
If permission is granted, obtain the FCM_TOKEN.
Register the obtained FCM_TOKEN with the extension.

During logout:

First delete the token using the firebase object.
Logout CometChat user.

The above steps have been implemented in the login and logout functions in the PushNotifications.js file. You can copy paste the below code. Do not forget to replace the APP_ID, REGION, AUTH_KEY of your app in the code below.

JavaScript

const APP_ID = 'APP_ID';
const REGION = 'REGION';
const AUTH_KEY = 'AUTH_KEY';

const APP_SETTING = new CometChat.AppSettingsBuilder()
  .subscribePresenceForAllUsers()
  .setRegion(REGION)
  .build();
let FCM_TOKEN = '';

let loginButton;
let logoutButton;

const login = async () => {
  const UID = document.getElementById('uid').value;
  if (!UID) {
    document.getElementById('uid').focus();
    return;
  }
  loginButton.disabled = true;
  console.log('Initiating login... ');
  try {
    // CC init
    await CometChat.init(APP_ID, APP_SETTING);

    // User login
    const loginResponse = await CometChat.login(UID, AUTH_KEY);
    console.log('1. User login complete', loginResponse);

    CometChat.getLoggedinUser().then((user) => console.log(user.name));
    // Change the page title
    document.title = UID + ' logged in';

    // Fetch the FCM Token
    const messaging = firebase.messaging();
    FCM_TOKEN = await messaging.getToken();
    console.log('2. Received FCM Token', FCM_TOKEN);

    // Register the FCM Token
    await CometChat.registerTokenForPushNotification(FCM_TOKEN);
    console.log('3. Registered FCM Token');

    logoutButton.disabled = false;
  } catch (error) {
    console.error(error);
  }
};

const logout = async () => {
  console.log('Initiating logout...');
  loginButton.disabled = true;
  logoutButton.disabled = true;
  try {
    // Delete the token
    const messaging = firebase.messaging();
    await messaging.deleteToken();

    // Logout the user
    await CometChat.logout();
    console.log('5. Logged out');

    // Refresh the page.
    init();
    window.location.reload();
  } catch (error) {
    console.error(error);
  }
};

const init = () => {
  // Basic initialization
  loginButton = document.getElementById('loginButton');
  logoutButton = document.getElementById('logoutButton');

  loginButton.addEventListener('click', login);
  logoutButton.addEventListener('click', logout);

  logoutButton.disabled = true;
};

window.onload = () => {
  // Call the initialization function on load.
  setTimeout(init, 300);
};

Start receiving Push Notifications

You can now host the project folder using Nginx, Apache web server, or even VSCode Live server extension.
Launch the web app in a browser and open the browser console to see the logs.
Enter the UID of the user and click on login.
When asked for permission to show notifications, click on Allow.
Once you see logs saying that the FCM Token has been registered, either send the browser tab to the background or close it completely.
Send a message to this logged-in user from another device (using our Sample Apps) and you should be able to see the Push Notifications.

Stop receiving Push Notifications

Reopen the previous closed browser tab and click on logout.
The FCM_TOKEN will be deleted on the extension’s end on the CometChat.logout() call.
As a good practice, the FCM_TOKEN should also be deleted using the firebase.messaging().deleteToken().

Custom body for notifications

To send custom body for notifications or to receive notification of CustomMessage, you need to set metadata while sending the CustomMessage.

JavaScript

var receiverID = 'UID';
var customData = {
  latitude: '50.6192171633316',
  longitude: '-72.68182268750002',
};

var customType = 'location';
var receiverType = CometChat.RECEIVER_TYPE.USER;
var metadata = {
  pushNotification: 'Your Notification Message',
};

var customMessage = new CometChat.CustomMessage(
  receiverID,
  receiverType,
  customType,
  customData
);

customMessage.setMetadata(metadata);

CometChat.sendCustomMessage(customMessage).then(
  (message) => {
    // Message sent successfully.
    console.log('custom message sent successfully', message);
  },
  (error) => {
    console.log('custom message sending failed with error', error);
    // Handle exception.
  }
);

Android

The Push Notification extension allows you to send push notifications to mobile apps and desktop browsers. In this section, we will see how to send Push Notifications to your Android app using Firebase Cloud Messaging or FCM.

Use Connection ServiceIf you want to use the System’s native call service to handle calls, please refer to our guide on Android - Connection Service

I want to checkout the sample app

Android Push notifications sample appView on Github

Firebase Project Setup

Visit Firebase Console and login/signup using your Gmail ID.

Step 1: Create a new Firebase Project

On your Firebase Console, create a new project.

This is a simple 3 step process where:

You give a name to your project
Add Google Analytics to your project (Optional)
Configure Google Analytics account (Optional)

Click on Create and you are ready to go.

Step 2: Add Firebase to your Android App

Click on the Android icon as shown on the screen below.

Register your Android app by providing the following details:
1. Android Package name
2. App nickname (optional)
3. Debug signing certificate SHA-1 (optional)

Download the google-services.json file and place it in the required location in your project.

Add Firebase SDK by copying and pasting the snippets in the Project-level build.gradle file.

Add Firebase SDK by copying and pasting the snippets in the App-level build.gradle file.

Click on ‘Continue to Console’ to finish the setup.

Step 3: Download the service account file

Extension settings

Step 1: Enable the extension

Login to CometChat and select your app.
Go to the Extensions section and Enable the Push Notifications extension.
Open the settings for this extension and save the following.

Step 2: Save your settings

On the Settings page you need to enter the following:

Set extension version

If you are setting it for the first time, Select V2 to start using the token-based version of the Push Notification extension.
If you already have an app using V1 and want to migrate your app to use V2, then Select V1 & V2 option. This ensures that the users viewing the older version of your app also receive Push Notifications.
Eventually, when all your users are on the latest version of your app, you can change this option to V2, thus turning off V1 (Topic-based) Push Notifications completely.

Select the platforms that you want to support

Select from Web, Android, Ionic (Deprecated), React Native, Flutter & iOS.

Notification payload settings

You can control if the notification key should be in the Payload or not. Learn more about the FCM Messages here.

Push payload message options

The message metadata includes the outputs of the Thumbnail Generation, Image Moderation, and Smart Replies extensions. You may want to retain this metadata if you need to customize the notification displayed to the end user based on these outputs.

Notification Triggers

Select the triggers for sending Push Notifications. These triggers can be classified into 3 main categories:
1. Message Notifications
2. Call Notifications
3. Group Notifications
These are pretty self-explanatory and you can toggle them as per your requirement.

Android App Setup

In the Firebase Project setup, we did the following things:

Added google-services.json file to the project.
Added the required Firebase SDK snippets to the Project-level build.grade file.
Added the required Firebase SDK snippets to the App-level build.gradle file.

If you want more details, check the Firebase Documentation.

Initialize CometChat and then login your user.
On successful login, you can register the obtained FCM Token using CometChat.registerTokenForPushNotification() function call. (You can see the process of getting the FCM Token in the next step)

Java
Kotlin

CometChat.registerTokenForPushNotification(MyFirebaseMessagingService.token, new CometChat.CallbackListener<String>() {
    @Override
    public void onSuccess(String s) {
        Log.e( "onSuccessPN: ",s );
    }
    @Override
    public void onError(CometChatException e) {
        Log.e("onErrorPN: ",e.getMessage() );
    }
});

CometChat.registerTokenForPushNotification(MyFirebaseMessagingService.token, object : CallbackListener<String?>() {
            override fun onSuccess(s: String?) {
                Log.e("onSuccessPN: ", s)
            }

            override fun onError(e: CometChatException) {
                Log.e("onErrorPN: ", e.message)
            }
        })

To fetch the registered token you can use below Firebase method.

Java
Kotlin

FirebaseInstanceId.getInstance().getInstanceId().addOnCompleteListener(
  new OnCompleteListener<InstanceIdResult>() {
    @Override
    public void onComplete(@NonNull Task<InstanceIdResult> task) {
      	if (!task.isSuccessful()) {
          return;
        }
      token = task.getResult().getToken();
      //CometChat.registerTokenForPushNotification(token, CometChat.CallbackListener<String>());
    }
});

FirebaseInstanceId.getInstance().getInstanceId()
   .addOnCompleteListener(object : OnCompleteListener<InstanceIdResult?>() {
     fun onComplete(task: com.google.android.gms.tasks.Task<InstanceIdResult>) {
       if (!task.isSuccessful()) {
         return
       }
       token = task.getResult().getToken()
       //CometChat.registerTokenForPushNotification(token,CometChat.CallbackListener<String?>())
     }
   })

Step 2: Receive notifications

The FCM Token can be received by overriding the onNewToken() method. This token is stored as a String variable. You can choose to store it in SharedPreferences as well.
To receive messages, you need to override the onMessageReceived(RemoteMessage remoteMessage).
PushNotificationService.java has the code that provides a way you can handle messages received from CometChat users and groups.
CallNotificationAction.class is a BroadcastReceiver which is used to handle call events when your app is in the background state.
Since Android O, there have been certain restrictions added for background tasks and users cannot launch intent directly from the service. More details here.
We suggest you to create notification channel inside your application class. After Android O, it is necessary to register notification channel to allow notifications of your apps.

Java

private void createNotificationChannel() {
          // Create the NotificationChannel, but only on API 26+ because
          // the NotificationChannel class is new and not in the support library
          if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
              CharSequence name = getString(R.string.app_name);
              String description = getString(R.string.channel_description);
              int importance = NotificationManager.IMPORTANCE_HIGH;
              NotificationChannel channel = new NotificationChannel("2", name, importance);
              channel.setDescription(description);
              channel.enableVibration(true);
              channel.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);
              // Register the channel with the system; you can't change the importance
              // or other notification behaviors after this
              NotificationManager notificationManager = getSystemService(NotificationManager.class);
              notificationManager.createNotificationChannel(channel);
          }
    }

You also need to add both of the above-mentioned files in your AndroidManifest.xml to make Push notification work in the background as well.

<service
    android:name=".MyFirebaseMessagingService"
    android:exported="true"
    android:enabled="true">
    <intent-filter>
         <action android:name="com.google.firebase.MESSAGING_EVENT" />
    </intent-filter>
</service>
<receiver android:name=".CallNotificationAction" />

Advanced

Sending Custom Notification body

Push notification has 2 parts, namely, the notification title and notification body. The title can be: a. Name of the sender in case of one-on-one message. (E.g.: Nancy Grace) b. Name of the sender followed by group name for group messages (E.g.: Nancy Grace @ Hiking Group) The body of the message depends upon the type of message being sent. You can send a custom body by specifying the pushNotification key followed by some user-defined string for the notification body inside metadata while sending the message. The following code shows an example of a Custom body using a message of category=custom. This is however not just limited to a custom category of messages.

Java
Kotlin

String receiverId="cometchat-uid-1";
JSONObject metaData=new JSONObject();
JSONObject customData=new JSONObject();

try {
   metaData.put("pushNotification","Custom Notification body");
   customData.put("yourkey","Your Value");
  } catch (JSONException e) {
   e.printStackTrace();
}

CustomMessage customMessage=new CustomMessage(receiverId,CometChatConstants.RECEIVER_TYPE_USER,customData);
customMessage.setMetadata(metaData);

CometChat.sendCustomMessage(customMessage, new CometChat.CallbackListener<CustomMessage>() {
            @Override
            public void onSuccess(CustomMessage customMessage) {
                Log.d(TAG, "onSuccess: "+customMessage.toString());
            }

            @Override
            public void onError(CometChatException e) {
                Log.d(TAG, "onError: "+e.getMessage());
            }
        });

var receiverId:String="cometchat-uid-1"
var metaData:JSONObject=JSONObject()
var customData:JSONObject= JSONObject()

  try {
       metaData.put("pushNotification","Custom Notification Body")
       customData.put("yourkey","Your Value")
    } catch (e:JSONException) {
       e.printStackTrace()
   }
var customMessage = CustomMessage(receiverId,CometChatConstants.RECEIVER_TYPE_USER,customData)
customMessage.metadata = metaData;

CometChat.sendCustomMessage(customMessage, object :CometChat.CallbackListener<CustomMessage>() {
       override fun onSuccess(p0: CustomMessage?) {
          Log.d(TAG,"onSuccess ${p0?.toString()}")
        }

       override fun onError(p0: CometChatException?) {
          Log.d(TAG,"onError ${p0?.message}")
       }
})

Converting Push Notification Payloads to Message Objects

CometChat provides a method CometChatHelper.processMessage() to convert the message JSON to the corresponding object of TextMessage, MediaMessage, CustomMessage, Action or Call. This code needs to be added to the onMessageReceived() method of the FirebaseMessagingService class.

Java

CometChatHelper.processMessage(new JSONObject(remoteMessage.getData().get("message"));

Type of Attachment can be of the following the type
CometChatConstants.MESSAGE_TYPE_IMAGE
CometChatConstants.MESSAGE_TYPE_VIDEO
CometChatConstants.MESSAGE_TYPE_AUDIO
CometChatConstants.MESSAGE_TYPE_FILE

Push Notification Payload sample for text and media messages-

Text message
Media message

{
  "alert": "Nancy Grace: Text Message",
  "sound": "default",
  "title": "CometChat",
  "message": {
    "receiver": "cometchat-uid-4",
    "data": {
      "entities": {
        "receiver": {
          "entityType": "user",
          "entity": {
            "uid": "cometchat-uid-4",
            "role": "default",
            "name": "Susan Marie",
            "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-4.webp",
            "status": "offline"
          }
        },
        "sender": {
          "entityType": "user",
          "entity": {
            "uid": "cometchat-uid-3",
            "role": "default",
            "name": "Nancy Grace",
            "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-3.webp",
            "status": "offline"
          }
        }
      },
      "text": "Text Message"
    },
    "sender": "cometchat-uid-3",
    "receiverType": "user",
    "id": "142",
    "sentAt": 1555668711,
    "category": "message",
    "type": "text"
  }
}

{
  "alert": "Nancy Grace: has sent an image",
  "sound": "default",
  "title": "CometChat",
  "message": {
    "receiver": "cometchat-uid-4",
    "data": {
      "attachments": [
        {
          "extension": "png",
          "size": 14327,
          "name": "extension_leftpanel.png",
          "mimeType": "image_png",
          "url": "https://s3-eu-west-1.amazonaws.com/data.cometchat.com/1255466c41bd7f/media/1555671238_956450103_extension_leftpanel.png"
        }
      ],
      "entities": {
        "receiver": {
          "entityType": "user",
          "entity": {
            "uid": "cometchat-uid-4",
            "role": "default",
            "name": "Susan Marie",
            "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-4.webp",
            "status": "offline"
          }
        },
        "sender": {
          "entityType": "user",
          "entity": {
            "uid": "cometchat-uid-3",
            "role": "default",
            "name": "Nancy Grace",
            "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-3.webp",
            "status": "offline"
          }
        }
      },
      "url": "https://s3-eu-west-1.amazonaws.com/data.cometchat.com/1255466c41bd7f/media/1555671238_956450103_extension_leftpanel.png"
    },
    "sender": "cometchat-uid-3",
    "receiverType": "user",
    "id": "145",
    "sentAt": 1555671238,
    "category": "message",
    "type": "image"
  }
}

Handle Push Notification Actions.

Step 1. Process push notification payload and grab BaseMessage object To open a chat view, firstly you will need a BaseMessage object. You can grab this from the push notification payload received in onMessageReceived(RemoteMessage message). You need to call CometChat.processMessage() method to process push notification payload.

Java

@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
        try {
            JSONObject messageData = new JSONObject(remoteMessage.getData().get("message"));
            BaseMessage baseMessage = CometChatHelper.processMessage(messageData);

          //Process BaseMessage and show Notification
        } catch (JSONException e) {
            e.printStackTrace();
        }
}

Step 2 . Handle Notification Actions You can launch the chat view after you tap on the Message Notification by creating PendingIntent and set it with NotificationBuilder object.

CometChatMessageListActivity is part of UI Kit Library. You can replace CometChatMessageListActivity with your required class.

Android Connection Service

Learn how to send Push Notifications to your Android app using Firebase Cloud Messaging or FCM.

I want to checkout the sample app

Android Push notifications sample appView on Github

Firebase Project Setup

Visit Firebase Console and login/signup using your Gmail ID.

Step 1: Create a new Firebase Project

On your Firebase Console, create a new project.

This is a simple 3 step process where:

You give a name to your project
Add Google Analytics to your project (Optional)
Configure Google Analytics account (Optional)

Click on Create and you are ready to go.

Step 2: Add Firebase to your Android App

Click on the Android icon as shown on the screen below.

Register your Android app by providing the following details:
1. Android Package name
2. App nickname (optional)
3. Debug signing certificate SHA-1 (optional)

Download the google-services.json file and place it in the required location in your project.

Add Firebase SDK by copying and pasting the snippets in the Project-level build.gradle file.

Add Firebase SDK by copying and pasting the snippets in the App-level build.gradle file.

Click on ‘Continue to Console’ to finish the setup.

Step 3: Download the service account file

Extension settings

Step 1: Enable the extension

Login to CometChat and select your app.
Go to the Extensions section and Enable the Push Notifications extension.
Open the settings for this extension and save the following.

Step 2: Save your settings

On the Settings page you need to enter the following:

Set extension version

If you are setting it for the first time, Select V2 to start using the token-based version of the Push Notification extension.
If you already have an app using V1 and want to migrate your app to use V2, then Select V1 & V2 option. This ensures that the users viewing the older version of your app also receive Push Notifications.
Eventually, when all your users are on the latest version of your app, you can change this option to V2, thus turning off V1 (Topic-based) Push Notifications completely.

Select the platforms that you want to support

Select from Web, Android, Ionic (Deprecated), React Native, Flutter & iOS.

Notification payload settings

You can control if the notification key should be in the Payload or not. Learn more about the FCM Messages here.

Push payload message options

The message metadata includes the outputs of the Thumbnail Generation, Image Moderation, and Smart Replies extensions. You may want to retain this metadata if you need to customize the notification displayed to the end user based on these outputs.

Notification Triggers

Select the triggers for sending Push Notifications. These triggers can be classified into 3 main categories:
1. Message Notifications
2. Call Notifications
3. Group Notifications
These are pretty self-explanatory and you can toggle them as per your requirement.

Android App Setup

In the Firebase Project setup, we did the following things:

Added google-services.json file to the project.
Added the required Firebase SDK snippets to the Project-level build.grade file.
Added the required Firebase SDK snippets to the App-level build.gradle file.

If you want more details, check the Firebase Documentation.

Initialize CometChat and then login your user.
On successful login, you can register the obtained FCM Token using CometChat.registerTokenForPushNotification() function call. (You can see the process of getting the FCM Token in the next step)

Java
Kotlin

CometChat.registerTokenForPushNotification(MyFirebaseMessagingService.token, new CometChat.CallbackListener<String>() {
    @Override
    public void onSuccess(String s) {
        Log.e( "onSuccessPN: ",s );
    }
    @Override
    public void onError(CometChatException e) {
        Log.e("onErrorPN: ",e.getMessage() );
    }
});

CometChat.registerTokenForPushNotification(MyFirebaseMessagingService.token, object : CallbackListener<String?>() {
            override fun onSuccess(s: String?) {
                Log.e("onSuccessPN: ", s)
            }

            override fun onError(e: CometChatException) {
                Log.e("onErrorPN: ", e.message)
            }
        })

To fetch the registered token you can use below Firebase method.

Java
Kotlin

FirebaseInstanceId.getInstance().getInstanceId().addOnCompleteListener(
  new OnCompleteListener<InstanceIdResult>() {
    @Override
    public void onComplete(@NonNull Task<InstanceIdResult> task) {
      	if (!task.isSuccessful()) {
          return;
        }
      token = task.getResult().getToken();
      //CometChat.registerTokenForPushNotification(token, CometChat.CallbackListener<String>());
    }
});

FirebaseInstanceId.getInstance().getInstanceId()
   .addOnCompleteListener(object : OnCompleteListener<InstanceIdResult?>() {
     fun onComplete(task: com.google.android.gms.tasks.Task<InstanceIdResult>) {
       if (!task.isSuccessful()) {
         return
       }
       token = task.getResult().getToken()
       //CometChat.registerTokenForPushNotification(token,CometChat.CallbackListener<String?>())
     }
   })

Step 2: Setup ConnectionService.

ConnectionService is an abstract service used to handle VoIP & other calls. It is part of android.telecom package which helps to handle telecom services. ConnectionService can be used either as System-Managed Service where System defined UI is shown to handle the calls. It can also be used as Self-Managed Service where users can show their own calling UI to handle the calls. Note - Currently the sample app uses system-managed connection service, So the System UI will be displayed to handle incoming calls. Learn more about ConnectionService.

Files	Description
CallConnectionService.java	Custom ConnectionService file which is used to handle incoming & outgoing calls. It is used to manages the ConnectionService with your app. It also handles PhoneAccounts and bind it’s services to Telecom.
CallConnection.java	Custom Connection class which is used to handle the callbacks of ConnectionService. Call backs such as onAnswer(), onReject(), onHold(), etc.
CallManager.java	It is used to manages the ConnectionService with your app. It also handles PhoneAccounts and bind it’s services to Telecom.

Step 3: Receive notifications

The FCM Token can be received by overriding the onNewToken() method. This token is stored as a String variable. You can choose to store it in SharedPreferences as well.
To receive messages, you need to override the onMessageReceived(RemoteMessage remoteMessage).
PushNotificationService.java has the code that provides a way you can handle messages received from CometChat users and groups.
Since Android O, there have been certain restrictions added for background tasks and users cannot launch intent directly from the service. More details here.
You also need to add the above-mentioned MyFirebasMessagingService.java fil in your AndroidManifest.xml to make Push notification work in the background as well.

<service
    android:name=".MyFirebaseMessagingService"
    android:exported="true"
    android:enabled="true">
    <intent-filter>
         <action android:name="com.google.firebase.MESSAGING_EVENT" />
    </intent-filter>
</service>

Converting Push Notification Payloads to Message Objects

Java

CometChatHelper.processMessage(new JSONObject(remoteMessage.getData().get("message"));

Push Notification Payload sample for text and media messages-

Text message
Media message

{
  "alert": "Nancy Grace: Text Message",
  "sound": "default",
  "title": "CometChat",
  "message": {
    "receiver": "cometchat-uid-4",
    "data": {
      "entities": {
        "receiver": {
          "entityType": "user",
          "entity": {
            "uid": "cometchat-uid-4",
            "role": "default",
            "name": "Susan Marie",
            "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-4.webp",
            "status": "offline"
          }
        },
        "sender": {
          "entityType": "user",
          "entity": {
            "uid": "cometchat-uid-3",
            "role": "default",
            "name": "Nancy Grace",
            "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-3.webp",
            "status": "offline"
          }
        }
      },
      "text": "Text Message"
    },
    "sender": "cometchat-uid-3",
    "receiverType": "user",
    "id": "142",
    "sentAt": 1555668711,
    "category": "message",
    "type": "text"
  }
}

{
  "alert": "Nancy Grace: has sent an image",
  "sound": "default",
  "title": "CometChat",
  "message": {
    "receiver": "cometchat-uid-4",
    "data": {
      "attachments": [
        {
          "extension": "png",
          "size": 14327,
          "name": "extension_leftpanel.png",
          "mimeType": "image/png",
          "url": "https://s3-eu-west-1.amazonaws.com/data.cometchat.com/1255466c41bd7f/media/1555671238_956450103_extension_leftpanel.png"
        }
      ],
      "entities": {
        "receiver": {
          "entityType": "user",
          "entity": {
            "uid": "cometchat-uid-4",
            "role": "default",
            "name": "Susan Marie",
            "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-4.webp",
            "status": "offline"
          }
        },
        "sender": {
          "entityType": "user",
          "entity": {
            "uid": "cometchat-uid-3",
            "role": "default",
            "name": "Nancy Grace",
            "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-3.webp",
            "status": "offline"
          }
        }
      },
      "url": "https://s3-eu-west-1.amazonaws.com/data.cometchat.com/1255466c41bd7f/media/1555671238_956450103_extension_leftpanel.png"
    },
    "sender": "cometchat-uid-3",
    "receiverType": "user",
    "id": "145",
    "sentAt": 1555671238,
    "category": "message",
    "type": "image"
  }
}

iOS FCM

Learn how to send out Push Notifications to your iOS using Firebase Cloud Messaging or FCM.

Don’t want to use FCM?You can refer to our setup using the Apple Push Notifications service (APNs).

I want to checkout the sample app

iOS Push notifications sample appView on Github

Firebase Project Setup

Visit Firebase Console and login/signup using your Gmail ID.

Step 1: Create a new Firebase Project

On your Firebase Console, create a new project.

This is a simple 3 step process where:

You give a name to your project
Add Google Analytics to your project (Optional)
Configure Google Analytics account (Optional)

Click on Create and you are ready to go.

Step 2: Add Firebase to your iOS App

Click on the iOS icon as shown on the screen below.

Register your Android app by providing the following details: a. iOS bundle name b. App nickname (optional) c. App Store ID (optional)

Download the GoogleService-Info.plist file and place it in the mentioned location of your project. Move your config file into the root of your Xcode project. If prompted, select to add the config file to all targets as follows.

We will Add Firebase SDK and Initialisation code later. So, click on ‘Next’, ‘Next’, and ‘Continue to the Console’.

Step 3: Download the service account file

Extension settings

Step 1: Enable the extension

Login to CometChat and select your app.
Go to the Extensions section and Enable the Push Notifications extension.
Open the settings for this extension and save the following settings.

Step 2: Save your settings

On the Settings page you need to enter the following:

Set extension version

If you are setting it for the first time, Select V2 to start using the token-based version of the Push Notification extension.
If you already have an app using V1 and want to migrate your app to use V2, then Select V1 & V2 option. This ensures that the users viewing the older version of your app also receive Push Notifications.
Eventually, when all your users are on the latest version of your app, you can change this option to V2, thus turning off V1 (Topic-based) Push Notifications completely.

Select the platforms that you want to support

Select from Web, Android, Ionic (Deprecated), React Native, Flutter & iOS.

Notification payload settings

You can control if the notification key should be in the Payload or not. Learn more about the FCM Messages here.

Push payload message options

The message metadata includes the outputs of the Thumbnail Generation, Image Moderation, and Smart Replies extensions. You may want to retain this metadata if you need to customize the notification displayed to the end user based on these outputs.

Notification Triggers

Select the triggers for sending Push Notifications. These triggers can be classified into 3 main categories:
1. Message Notifications
2. Call Notifications
3. Group Notifications
These are pretty self-explanatory and you can toggle them as per your requirement.

Get APNS Credentials

The following steps in this section are written on the assumption that you already have an app ID assigned to your client app.

Step 1: Create a Certificate Signing Request

To obtain a signing certificate required to sign apps for installation on iOS devices, you should first create a certificate signing request (CSR) file through Keychain Access on your Mac.

Open the Keychain Access from the utility folder, go to Keychain Access > Certificate Assistant > Request a Certificate From a Certificate Authority, and then click.

The Certificate Information dialog box appears. Enter the email address that you use in your Apple Developer account, and enter a common name for your private key. Don’t enter CA email address, choose Saved to disk, and then click the Continue button.

Specify the name of your CSR to save and choose the location to save the file on your local disk. Then your CSR file is created, which contains a public/private key pair.

Step 2: Create an SSL certificate

Sign in to your account at the Apple Developer Member Center.
Go to Certificates, Identifiers & Profiles. In the Identifiers > App IDs and select the Push Notifications service under Application Services
Click the Edit button.

Under the Push Notifications service, choose which SSL certificate to create either Development or Production.

In the Generate your certificate pane that appears after the selection, under Upload CSR file., upload the CSR file you created through the Choose File… button. To complete the process, choose Continue. When the certificate is ready, choose Download to save it to your Mac.

In order to install the downloaded certificate to the KeyChain Access on your Mac, double-click it. You can find the certificate in the KeyChain Access > login > Certificates.

Step 3: Export and update .p12 file to Firebase

Type a name for the .p12 file and save it to your Mac.
Browse to the location where you saved your key, select it, and click Open. Add the key ID for the key (available in Certificates, Identifiers & Profiles in the Apple Developer Member Center) and export it.

Step 4: Upload your APNs Certificates

Go to Firebase console and open your project.
Inside your iOS project in the Firebase console, select settings and then select the Cloud Messaging tab.
Scroll down to iOS app configuration, click the Upload button for APNS certificate.
Browse to the location where you saved your APNs Certificates, select it, and click Open.

iOS App Setup

Step 1: Initial Firebase Cloud Messaging client setup

Add the Firebase SDK, Add the firebase pods that you want to install. You can include a Pod in your Podfile like this:

Swift

pod 'Firebase_Core'
pod 'Firebase_Messaging'

Import the Firebase module in your ApplicationDelegate:

Swift
Objective C

import Firebase

@import Firebase;

Configure a FirebaseApp shared instance, typically in your application’s application:didFinishLaunchingWithOptions: method:

Swift
Objective C

FirebaseApp.configure()

[FIRApp configure];

Step 2: Register the FCM Token

Get the FCM Token for remote notifications, typically in your application’s application:didFinishLaunchingWithOptions: method:

Swift
Objective C

Messaging.messaging().delegate = self

if #available(iOS 10.0, *) {
  UNUserNotificationCenter.current().delegate = self

  let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound]
  UNUserNotificationCenter.current().requestAuthorization(
    options: authOptions,
    completionHandler: {
      _,
      _ in
    })
} else {
  let settings: UIUserNotificationSettings =
    UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil)
  application.registerUserNotificationSettings(settings)
}

application.registerForRemoteNotifications()

[FIRMessaging messaging].delegate = self;

if ([UNUserNotificationCenter class] != nil) {

  [UNUserNotificationCenter currentNotificationCenter].delegate = self;

  UNAuthorizationOptions authOptions = UNAuthorizationOptionAlert |  UNAuthorizationOptionSound | UNAuthorizationOptionBadge;

  [[UNUserNotificationCenter currentNotificationCenter] requestAuthorizationWithOptions: authOptions completionHandler: ^ (BOOL granted, NSError * _Nullable error) {
      // ...
    }
  ];

} else {
  UIUserNotificationType allNotificationTypes = (UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge);

  UIUserNotificationSettings * settings = [UIUserNotificationSettings settingsForTypes: allNotificationTypes categories: nil];

  [application registerUserNotificationSettings: settings];

}
[application registerForRemoteNotifications];

Swift
Objective C

func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error) {
  print("Unable to register for remote notifications: \\(error.localizedDescription)")
}

func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
  print("APNs token retrieved: \\(deviceToken)")

  Messaging.messaging().apnsToken = deviceToken
}

-(void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error
{
    NSLog(@"Unable to register for remote notifications: %@", error);
}

-(void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken
{
    NSLog(@"APNs device token retrieved: %@", deviceToken);
    [FIRMessaging messaging].APNSToken = deviceToken;
}

Swift

let authKey = "XXXX XXXX XXXXX"

CometChat.login(UID: UID, authKey: authKey, onSuccess: { (user) in
  DispatchQueue.main.async {
   if let token = UserDefaults.standard.value(forKey: "fcmToken") as?  String {
    CometChat.registerTokenForPushNotification(token: token, onSuccess: { (success) in
    print("onSuccess to  registerTokenForPushNotification: \\(success)")
   }) { (error) in
     print("error to registerTokenForPushNotification")
     }
}

This also needs to be done when you refresh your FCM Token

Swift

extension AppDelegate : MessagingDelegate {
    // [START refresh_token]
    func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String) {
        print("Firebase registration token: \\(fcmToken)")

        UserDefaults.standard.set(fcmToken, forKey: "fcmToken")
        CometChat.registerTokenForPushNotification(token: fcmToken, onSuccess: { (sucess) in
            print("token registered \\(sucess)")
        }) { (error) in
            print("token registered error \\(String(describing: error?.errorDescription))")
        }


        let dataDict:[String: String] = ["token": fcmToken]
        NotificationCenter.default.post(name: Notification.Name("FCMToken"), object: nil, userInfo: dataDict)
    }
}

Step 3: Start receiving Push Notifications

Receive remote notification, typically in your application’s App Delegate:

Swift
Objective C

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any]) {

  // Print full message.
  print(userInfo)
}

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any], fetchCompletionHandler completionHandler: @escaping(UIBackgroundFetchResult) -> Void) {

  // Print full message.
  print(userInfo)

  completionHandler(UIBackgroundFetchResult.newData)
}

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {

  // Print full message.
  NSLog(@"%@", userInfo);
}

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
    fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler {

  // Print full message.
  NSLog(@"%@", userInfo);

  completionHandler(UIBackgroundFetchResultNewData);
}

Receive Notification for CustomMessage:

To receive and display notifications for CustomMessage, the developer needs to set metadata while sending the CustomMessage value as follows:

Swift
Objective C

var receiverID = "cometchat-uid-1";
var message = [
  "someRandomKey": "someRandomData"
];

var customMessage = CustomMessage(receiverUid: receiverID, receiverType: ReceiverTypeUser, customData: message);

// to display custom notification banner add this , "pushNotification" key is not to modify, although you can modify banner text as shown beow   //
var customNotificationDisplayText = [
  "pushNotification": "notification_banner_text_here";
];

// set it as metadata of `Custom message`
customMessage.metaData = customNotificationDisplayText;

CometChat.sendCustomMessage(withMessage: customMessage, onSuccess: { sentMessage in

    print("sentMessage \\(sentMessage.stringValue)");

}, onError: { error in

    if let error = error?.errorDescription() {
        print("error sending custom message \\(error)");
    }
});

NSString * receiverID = @ "cometchat-uid-1";
NSDictionary * message = [NSDictionary dictionaryWithObjectsAndKeys: @ "someRandomData", @ "someRandomKey", nil];

CustomMessage * customMessage = [
  [CustomMessage alloc] initWithReceiverUid: receiverID receiverType: ReceiverTypeUser customData: message
];

// to display custom notification banner add this //
NSDictionary * customNotificationDisplayText = [NSDictionary dictionaryWithObjectsAndKeys: @ "notification_banner_text_here", @ "pushNotification", nil];

[customMessage setMetaData: customNotificationDisplayText];


[CometChat sendCustomMessageWithMessage: customMessage onSuccess: ^ (CustomMessage * _Nonnull sentMessage) {

    NSLog(@ "sentMessage %@", [sentMessage stringValue]);

  }
  onError: ^ (CometChatException * _Nullable error) {

    NSLog(@ "error sending custom message %@", [error errorDescription]);
  }
];

Push Notification Payload sample for text and media messages-

Text message
Media message

{
  "alert": "Nancy Grace: Text Message",
  "sound": "default",
  "title": "CometChat",
  "message": {
    "receiver": "cometchat-uid-4",
    "data": {
      "entities": {
        "receiver": {
          "entityType": "user",
          "entity": {
            "uid": "cometchat-uid-4",
            "role": "default",
            "name": "Susan Marie",
            "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-4.webp",
            "status": "offline"
          }
        },
        "sender": {
          "entityType": "user",
          "entity": {
            "uid": "cometchat-uid-3",
            "role": "default",
            "name": "Nancy Grace",
            "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-3.webp",
            "status": "offline"
          }
        }
      },
      "text": "Text Message"
    },
    "sender": "cometchat-uid-3",
    "receiverType": "user",
    "id": "142",
    "sentAt": 1555668711,
    "category": "message",
    "type": "text"
  }
}

{
  "alert": "Nancy Grace: has sent an image",
  "sound": "default",
  "title": "CometChat",
  "message": {
    "receiver": "cometchat-uid-4",
    "data": {
      "attachments": [
        {
          "extension": "png",
          "size": 14327,
          "name": "extension_leftpanel.png",
          "mimeType": "image/png",
          "url": "https://s3-eu-west-1.amazonaws.com/data.cometchat.com/1255466c41bd7f/media/1555671238_956450103_extension_leftpanel.png"
        }
      ],
      "entities": {
        "receiver": {
          "entityType": "user",
          "entity": {
            "uid": "cometchat-uid-4",
            "role": "default",
            "name": "Susan Marie",
            "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-4.webp",
            "status": "offline"
          }
        },
        "sender": {
          "entityType": "user",
          "entity": {
            "uid": "cometchat-uid-3",
            "role": "default",
            "name": "Nancy Grace",
            "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-3.webp",
            "status": "offline"
          }
        }
      },
      "url": "https://s3-eu-west-1.amazonaws.com/data.cometchat.com/1255466c41bd7f/media/1555671238_956450103_extension_leftpanel.png"
    },
    "sender": "cometchat-uid-3",
    "receiverType": "user",
    "id": "145",
    "sentAt": 1555671238,
    "category": "message",
    "type": "image"
  }
}

Advanced

Convert Push Notification payload to Message object

CometChat SDK provides a method CometChat.CometChatHelper.processMessage() which will take the JSON received in The push notification as input, and return the corresponding TextMessage, MediaMessage,CustomMessage or Call object in return. Once the message object is received, you can use the entity as per your requirements. This code needs to be added to the willPresent notification method of the UNUserNotificationCenterDelegate delegate.

Swift

func userNotificationCenter(_ center: UNUserNotificationCenter,
                                willPresent notification: UNNotification,
                                withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
        if let userInfo = notification.request.content.userInfo as? [String : Any], let messageObject = userInfo["message"], let str = messageObject as? String, let dict = str.stringTodictionary() {

   if let baseMessage = CometChat.processMessage(dict).0 {
     switch baseMessage.messageCategory {
      case .message:
        if let message = baseMessage as? BaseMessage {
          switch message.messageType {
             case .text:
                print("text Messagge is: \\((message as?TextMessage)?.stringValue())")
             case .image:
                 print("image Messagge is: \\((message as? MediaMessage)?.stringValue())")
             case .video:
                 print("video Messagge is: \\((message as? MediaMessage)?.stringValue())")
              case .audio:
                 print("audio Messagge is: \\((message as? MediaMessage)?.stringValue())")
              case .file:
                  print("file Messagge is: \\((message as? MediaMessage)?.stringValue())")
               case .custom:
                   print("custom Messagge is: \\((message as? MediaMessage)?.stringValue())")
               case .groupMember: break
               @unknown default:break}
              }
            case .action: break
             case .call:
               if let call = baseMessage as? Call {
                  print("call is: \\(call.stringValue())")
                }
               case .custom:
                  if let customMessage = baseMessage as? CustomMessage {
                    print("customMessage is: \\(customMessage.stringValue())")
                 }
                 @unknown default: break
              }
             }
            }
        completionHandler([.alert, .badge, .sound])
 }

extension String {
  func stringTodictionary() -> [String:Any]? {
		var dictonary:[String:Any]?
				if let data = self.data(using: .utf8) {
					do {
        dictonary = try JSONSerialization.jsonObject(with: data, options: []) as? [String : Any]
				if let myDictionary = dictonary
        {
          return myDictionary;
        }
      } catch let error as NSError {
        print(error)
      }
			}
    return dictonary;
  }
}

Miscellaneous

iOS APNs

Apple Push Notification service or APNs is used to send notifications to iOS devices. With this, you can also use Apple’s CallKit for showing the call screen.

I want to checkout the sample app

iOS Push notifications sample appView on Github

Get APNS Credentials

The following steps in this section are written on the assumption that you already have an app ID assigned to your client app.

Step 1: Create a Certificate Signing Request

To obtain a signing certificate required to sign apps for installation on iOS devices, you should first create a certificate signing request (CSR) file through Keychain Access on your Mac.

Open the Keychain Access from the utility folder, go to Keychain Access > Certificate Assistant > Request a Certificate From a Certificate Authority, and then click.

The Certificate Information dialog box appears. Enter the email address that you use in your Apple Developer account, and enter a common name for your private key. Don’t enter CA email address, choose Saved to disk, and then click the Continue button.

Specify the name of your CSR to save and choose the location to save the file on your local disk. Then your CSR file is created, which contains a public/private key pair.

Step 2: Create an SSL certificate

Sign in to your account at the Apple Developer Member Center.
Go to Certificates, Identifiers & Profiles.

Create new Certificate by clicking on the + icon.

Under Services, select - Apple Push Notification services SSL (Sandbox & Production)

Select your App ID from the dropdown.

Upload CSR file., upload the CSR file you created through the Choose File button. To complete the process, choose Continue. When the certificate is ready, choose Download to save it to your Mac.

Step 3: Export and update .p8 certificate

To generate a .p8 key file, go to Apple Developer Account, then select Certificates, IDs & Profiles.
Select Keys and click on the ”+” button to add a new key.
In the new key page, type in your key name and check the Apple Push Notification service (APNs) box, then click “Continue” and click “Register”.
Then proceed to download the key file by clicking Download.
Make note of the Key ID, Team ID and your Bundle ID for saving in the Extension’s settings.

If you wish to use the .p12 certificate instead, do the following:

Type a name for the .p12 file and save it to your Mac.
Browse to the location where you saved your key, select it, and click Open. Add the key ID for the key (available in Certificates, Identifiers & Profiles in the Apple Developer Member Center) and export it.
DO NOT provide an export password when prompted.
The .p12 file will be required in the next step for uploading in the CometChat Dashboard.

Extension settings

Step 1: Enable the extension

Login to CometChat and select your app.
Go to the Extensions section and Enable the Push Notifications extension.
Open the settings for this extension and save the following.

Step 2: Save your settings

On the Settings page you need to enter the following:

Set extension version
1. The extension version has to be set to ‘V2’ or ‘V1 & V2’ in order to use APNs as the provider.
Select Platforms
1. You can select the platforms on which you wish to receive Push Notifications.
APNs Settings
1. You can turn off the Production mode when you create a development build of your application.
2. Upload the .p8 or .p12 certificate exported in the previous step.
Push payload message options

The message metadata includes the outputs of the Thumbnail Generation, Image Moderation, and Smart Replies extensions. You may want to retain this metadata if you need to customize the notification displayed to the end user based on these outputs.

Notification Triggers
1. Select the triggers for sending Push Notifications. These triggers can be classified into 3 main categories:
  1. Message Notifications
  2. Call Notifications
  3. Group Notifications
2. These are pretty self-explanatory and you can toggle them as per your requirement.

iOS App Setup

Initial Setup

Call CometChat.init() method to initialize CometChat in your application. This needs to be called only once.
The user has to be logged in using CometChat.login() method. On the success callback, register the token with the extension. Two tokens need to be registered, out of which one is APNs token and other is CallKit token: a. CometChat.registerTokenForPushNotification(token: apnsToken, settings: ["voip":false])
b. CometChat.registerTokenForPushNotification(token: voipToken, settings: ["voip":true])

Swift

let authKey = "XXXX XXXX XXXXX"

CometChat.login(UID: UID, authKey: authKey, onSuccess: { (current_user) in
        DispatchQueue.main.async {
          if let apnsToken = UserDefaults.standard.value(forKey: "apnsToken") as? String {
            print("APNS token is: \(apnsToken)")
            CometChat.registerTokenForPushNotification(token: apnsToken, settings: ["voip":false]) { (success) in
              print("onSuccess to registerTokenForPushNotification: \(success)")
              DispatchQueue.main.async {self.activityIndicator.stopAnimating()
                print("login success with : \(current_user.stringValue())")
                self.performSegue(withIdentifier: "presentPushNotification", sender: nil)
              }
            } onError: { (error) in
              print("error to registerTokenForPushNotification")
            }
          }
          if let voipToken = UserDefaults.standard.value(forKey: "voipToken") as? String {
            print("VOIP token is: \(voipToken)")
            CometChat.registerTokenForPushNotification(token: voipToken, settings: ["voip":true]) { (success) in
              print("onSuccess to registerTokenForPushNotification: \(success)")
              DispatchQueue.main.async {self.activityIndicator.stopAnimating()
                print("login success with : \(current_user.stringValue())")
                self.performSegue(withIdentifier: "presentPushNotification", sender: nil)
              }
            } onError: { (error) in
              print("error to registerTokenForPushNotification")
            }
          }
          }
        }
      }) { (error) in
        print("error while login", error);
      }
    }

Import PushKit and CallKit in AppDelegate.Swift file.

Swift

import PushKit
import CallKit

Receive Push Notifications

Registering for the APNs notifications

Swift

var window: UIWindow?
var uuid: UUID?
var activeCall: Call?
var cancelCall: Bool = true
var onCall = true
var callController = CXCallController()
let voipRegistry = PKPushRegistry(queue: DispatchQueue.main)
var provider: CXProvider? = nil

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
    self.voipRegistration()
   // [START register_for_notifications]
if #available(iOS 10.0, *) {
UNUserNotificationCenter.current().delegate = self
let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound]
UNUserNotificationCenter.current().requestAuthorization(
options: authOptions,
completionHandler: {_, _ in })
} else {
let settings: UIUserNotificationSettings =
UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil)
application.registerUserNotificationSettings(settings)
}
application.registerForRemoteNotifications()
// [END register_for_notifications]
return true
}
// Register for VoIP notifications
func voipRegistration() {
// Create a push registry object
let mainQueue = DispatchQueue.main
let voipRegistry: PKPushRegistry = PKPushRegistry(queue: mainQueue)
voipRegistry.delegate = self
voipRegistry.desiredPushTypes = [PKPushType.voIP]
}

Add AppDelegate extension for receiving Push Notifications

Swift

extension AppDelegate : UNUserNotificationCenterDelegate {
// Receive displayed notifications for iOS 10 devices.
func userNotificationCenter(_ center: UNUserNotificationCenter,
willPresent notification: UNNotification,
withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
print("willPresent notification: \(notification.request.content.userInfo)")
if let userInfo = notification.request.content.userInfo as? [String : Any], let messageObject =
userInfo["message"], let str = messageObject as? String, let dict = str.stringTodictionary() {
if let baseMessage = CometChat.processMessage(dict).0 {
switch baseMessage.messageCategory {
case .message:
if let message = baseMessage as? BaseMessage {
switch message.messageType {
case .text:
print("text Messagge is: \((message as? TextMessage)?.stringValue())")
case .image:
print("image Messagge is: \((message as? MediaMessage)?.stringValue())")
case .video:
print("video Messagge is: \((message as? MediaMessage)?.stringValue())")
case .audio:
print("audio Messagge is: \((message as? MediaMessage)?.stringValue())")
case .file:
print("file Messagge is: \((message as? MediaMessage)?.stringValue())")
case .custom:
print("custom Messagge is: \((message as? MediaMessage)?.stringValue())")
case .groupMember:
break
@unknown default:
break
}
}
case .action: break
case .call:
if let call = baseMessage as? Call {
print("call is: \(call.stringValue())")
}
case .custom:
if let customMessage = baseMessage as? CustomMessage {
print("customMessage is: \(customMessage.stringValue())")
}
@unknown default: break
}
}
}
completionHandler([.alert, .badge, .sound])
}
func userNotificationCenter(_ center: UNUserNotificationCenter,
didReceive response: UNNotificationResponse,
withCompletionHandler completionHandler: @escaping () -> Void) {
let notification = response.notification.request.content.userInfo
print("notification is 11: \(notification)")
completionHandler()
}
func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
let token = deviceToken.reduce("", {$0 + String(format: "%02X", $1)})
print("Device Token : ",token)
let hexString = deviceToken.map { String(format: "%02.2hhx", $0) }.joined()
print("Device Token 11: ",hexString)
UserDefaults.standard.set(hexString, forKey: "apnsToken")
CometChat.registerTokenForPushNotification(token: hexString, settings: ["voip":false]) { (success) in
print("registerTokenForPushNotification voip: \(success)")
} onError: { (error) in
print("registerTokenForPushNotification error: \(error)")
}
}
}

Add AppDelegate extension for VOIP notifications. Launch CallKit screen when the VOIP notification is received. Once the CallKit screen is displayed, you can Accept or Reject the CometChat call accordingly.

Swift

// MARK: CallKit & PushKit
extension AppDelegate: PKPushRegistryDelegate , CXProviderDelegate {


func pushRegistry(_ registry: PKPushRegistry, didUpdate pushCredentials: PKPushCredentials, for type: PKPushType) {
        let deviceToken = pushCredentials.token.reduce("", {$0 + String(format: "%02X", $1) })
        print("voip token is: \(deviceToken)")
        UserDefaults.standard.set(deviceToken, forKey: "voipToken")
        CometChat.registerTokenForPushNotification(token: deviceToken, settings: ["voip":true]) { (success) in
            print("registerTokenForPushNotification voip: \(success)")
        } onError: { (error) in
            print("registerTokenForPushNotification error: \(error)")
        }
    }

func pushRegistry(_ registry: PKPushRegistry, didReceiveIncomingPushWith payload: PKPushPayload, for type: PKPushType, completion: @escaping () -> Void) {
        if let userInfo = payload.dictionaryPayload as? [String : Any], let messageObject =
            userInfo["message"], let dict = messageObject as? [String : Any] {

            if let baseMessage = CometChat.processMessage(dict).0 {
                switch baseMessage.messageCategory {
                case .message: break
                case .action: break
                case .call:
                    if let call = baseMessage as? Call {
                        switch call.callStatus {
                        case .initiated:
                            self.activeCall = call
                            self.uuid = UUID()
                            if let name = (call.sender)?.name {
                                let config = CXProviderConfiguration(localizedName: "APNS + Callkit")
                                config.iconTemplateImageData = #imageLiteral(resourceName:                                             "your_app_icon").pngData()
                                config.includesCallsInRecents = false
                                config.ringtoneSound = "ringtone.caf"
                                config.supportsVideo = true
                                provider = CXProvider(configuration: config)
                                provider?.setDelegate(self, queue: nil)
                                let update = CXCallUpdate()
                                update.remoteHandle = CXHandle(type: .generic, value: name.capitalized)
                                if call.callType == .video {
                                    update.hasVideo = true
                                }else{
                                    update.hasVideo = false
                                }
                                provider?.reportNewIncomingCall(with: self.uuid!, update: update,                                       completion: { error in
                                    if error == nil {
                                        self.configureAudioSession()
                                    }
                                })
                            }
                        case .ongoing, .unanswered, .rejected, .busy, .cancelled:
                            if self.activeCall != nil {
                                if self.cancelCall {
                                    self.end(uuid: self.uuid!)
                                }
                            }
                        case .ended: break
                            @unknown default: break }
                    }
                case .custom: break
                @unknown default: break
                }
            }
        }
    }

   internal func configureAudioSession() {
        do {
            try AVAudioSession.sharedInstance().setCategory(AVAudioSession.Category.playAndRecord,                 options: [.mixWithOthers, .allowBluetooth, .defaultToSpeaker])
            try AVAudioSession.sharedInstance().setActive(true)

        } catch let error as NSError {
            print(error)
        }
    }

 func providerDidReset(_ provider: CXProvider) {
        if let uuid = self.uuid {
            onCall = true
            provider.reportCall(with: uuid, endedAt: Date(), reason: .unanswered)
        }
    }

func provider(_ provider: CXProvider, perform action: CXAnswerCallAction) {
        if let activeCall = activeCall {
            startCall()
        }
        action.fulfill()
    }

func provider(_ provider: CXProvider, perform action: CXEndCallAction) {
       NotificationCenter.default.post(name: NSNotification.Name(rawValue: "didRejectButtonPressed"), object: nil, userInfo: nil)
        end(uuid: self.uuid!)
        onCall = true
        if let activeCall = activeCall {
            CometChat.rejectCall(sessionID: activeCall.sessionID ?? "", status: .rejected, onSuccess: {(rejectedCall) in
                DispatchQueue.main.async {
                    CometChatSnackBoard.display(message:  "CALL_REJECTED".localized(), mode: .info, duration: .short)
                }
            }) { (error) in
                DispatchQueue.main.async {
                    if let errorMessage = error?.errorDescription {
                        CometChatSnackBoard.display(message:  "CALL_REJECTED".localized(), mode: .info, duration: .short)
                    }
                }
            }
            provider.reportCall(with: self.uuid!, endedAt: Date(), reason: .remoteEnded)
         }
        action.fail()
    }

   func provider(_ provider: CXProvider, didDeactivate audioSession: AVAudioSession) {
        print(#function)
    }

    func provider(_ provider: CXProvider, timedOutPerforming action: CXAction) {
        action.fulfill()
        print(#function)
    }

    func provider(_ provider: CXProvider, perform action: CXSetHeldCallAction) {
        print(#function)
    }

    func provider(_ provider: CXProvider, perform action: CXSetMutedCallAction) {
        print(#function)
    }

  func end(uuid: UUID) {
        print("endUUID",uuid)
        let endCallAction = CXEndCallAction(call: uuid)
        let transaction = CXTransaction()
        transaction.addAction(endCallAction)
        requestTransaction(transaction, action: "")
    }

    func setHeld(uuid: UUID, onHold: Bool) {
        print("setHeld",uuid)
        let setHeldCallAction = CXSetHeldCallAction(call: uuid, onHold: onHold)
        let transaction = CXTransaction()
        transaction.addAction(setHeldCallAction)

        requestTransaction(transaction, action: "")
    }

    internal func requestTransaction(_ transaction: CXTransaction, action: String = "") {
        callController.request(transaction) { error in
            if let error = error {
                print("Error requesting transaction: \(error)")
            } else {
                print("Requested transaction successfully")
            }
        }
    }

   public func startCall(){
        let activeCall = CometChatCall()
       cancelCall = false
        activeCall.modalPresentationStyle = .fullScreen
        if let window = UIApplication.shared.windows.first , let rootViewController = window.rootViewController {
            var currentController = rootViewController
            while let presentedController = currentController.presentedViewController {
                currentController = presentedController
            }
            currentController.present(activeCall, animated: true, completion: nil)
        }
    }
}

Miscellaneous

Create view controller for Calls

Create a viewController which will start the call when the user starts the call.

Swift

import UIKit
import CometChatPro
import CallKit

class CometChatCall: UIViewController {


    override func viewDidLoad() {
        super.viewDidLoad()
        if let appDelegate = UIApplication.shared.delegate as? AppDelegate {
            if let call = appDelegate.activeCall {

                if (call.callInitiator as? User)?.uid != CometChat.getLoggedInUser()?.uid {

                    CometChat.acceptCall(sessionID: call.sessionID ?? "") { acceptedCall in

                        DispatchQueue.main.async {
                            let callSettings = CallSettings.CallSettingsBuilder(callView: self.view, sessionId: acceptedCall?.sessionID ?? "").setMode(mode: .MODE_SINGLE).build()

                            CometChat.startCall(callSettings: callSettings) { userJoined in
                                appDelegate.onCall = true
                            } onUserLeft: { onUserLeft in

                            } onUserListUpdated: { onUserListUpdated in

                            } onAudioModesUpdated: { onAudioModesUpdated in

                            } onUserMuted: { onUserMuted in

                            } onCallSwitchedToVideo: { onCallSwitchedToVideo in

                            } onRecordingStarted: { onRecordingStarted in

                            } onRecordingStopped: { onRecordingStopped in

                            } onError: { error in
                                DispatchQueue.main.async {
                                    self.dismiss(animated: true, completion: nil)
                                }
                            } onCallEnded: { ended in
                                DispatchQueue.main.async {
                                    var str = ""
                                    if let uuuid = appDelegate.uuid {
                                        print("CometChatCalls", uuuid)
                                    }
                                    self.dismiss(animated: true, completion: nil)
                                    self.dismiss(animated: true)
                                }
                            }
                        }
                    } onError: { error in

                    }
                }else{

                    let callSettings = CallSettings.CallSettingsBuilder(callView: self.view, sessionId: call.sessionID ?? "").setMode(mode: .MODE_SINGLE).build()

                    CometChat.startCall(callSettings: callSettings) { userJoined in

                    } onUserLeft: { onUserLeft in

                    } onUserListUpdated: { onUserListUpdated in

                    } onAudioModesUpdated: { onAudioModesUpdated in

                    } onUserMuted: { onUserMuted in

                    } onCallSwitchedToVideo: { onCallSwitchedToVideo in

                    } onRecordingStarted: { onRecordingStarted in

                    } onRecordingStopped: { onRecordingStopped in

                    } onError: { error in
                        DispatchQueue.main.async {
                            self.dismiss(animated: true, completion: nil)
                        }
                    } onCallEnded: { ended in
                        DispatchQueue.main.async {
                            self.dismiss(animated: true, completion: nil)
                        }
                    }
                }
            }
        }
    }
}

Convert Push Notification payload to Message object

Swift

func userNotificationCenter(_ center: UNUserNotificationCenter,
                                willPresent notification: UNNotification,
                                withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
        if let userInfo = notification.request.content.userInfo as? [String : Any], let messageObject = userInfo["message"], let str = messageObject as? String, let dict = str.stringTodictionary() {

   if let baseMessage = CometChat.processMessage(dict).0 {
     switch baseMessage.messageCategory {
      case .message:
        if let message = baseMessage as? BaseMessage {
          switch message.messageType {
             case .text:
                print("text Messagge is: \((message as?TextMessage)?.stringValue())")
             case .image:
                 print("image Messagge is: \((message as? MediaMessage)?.stringValue())")
             case .video:
                 print("video Messagge is: \((message as? MediaMessage)?.stringValue())")
              case .audio:
                 print("audio Messagge is: \((message as? MediaMessage)?.stringValue())")
              case .file:
                  print("file Messagge is: \((message as? MediaMessage)?.stringValue())")
               case .custom:
                   print("custom Messagge is: \((message as? MediaMessage)?.stringValue())")
               case .groupMember: break
               @unknown default:break}
              }
            case .action: break
             case .call:
               if let call = baseMessage as? Call {
                  print("call is: \(call.stringValue())")
                }
               case .custom:
                  if let customMessage = baseMessage as? CustomMessage {
                    print("customMessage is: \(customMessage.stringValue())")
                 }
                 @unknown default: break
              }
             }
            }
        completionHandler([.alert, .badge, .sound])
 }

extension String {
  func stringTodictionary() -> [String:Any]? {
		var dictonary:[String:Any]?
				if let data = self.data(using: .utf8) {
					do {
        dictonary = try JSONSerialization.jsonObject(with: data, options: []) as? [String : Any]
				if let myDictionary = dictonary
        {
          return myDictionary;
        }
      } catch let error as NSError {
        print(error)
      }
			}
    return dictonary;
  }
}

Flutter

Learn how to implement Push notifications for the Flutter platform using FCM as well as APNs. This document guides you to set up Flutter push notifications as follows:

Using FCM to implement push notifications for messaging on Android and iOS.
Using APN to implement push notifications for messaging on iOS.

Flutter Push notifications supportPush Notifications are supported in Flutter for CometChat SDK v3.0.9 and above.

FCM: Push notifications for messaging on Android and iOS

For Push notifications from FCM to work on both Android and iOS, the push payload has to be of type Notification message. A Notification message is a push payload that has the notification key in it. These push notifications are handled directly by the OS and as a developer, you cannot customize these notifications. This simple setup can be used for apps that only implement messaging feature of CometChat. Learn more about FCM messages.

I want to checkout the sample app

Flutter Push notifications sample appImplementation using FCM for Android and iOS.View on Github

Step 1: Install packages

Add the following to your pubspec.yaml file under dependencies.

pubspec.yaml

firebase_core: ^2.8.0
firebase_messaging: ^14.3.0

Install the packages.

Command

flutter pub get

Step 2: Configure with flutterfire_cli

Use the following command to install flutterfire_cli

Command

dart pub global activate flutterfire_cli

Command

flutterfire configure --project=<FIREBASE_PROJECT_ID>

This will ask you for the platforms. Select android and ios. The CLI tool will add the following files to your directory structure:

google-services.json to the android folder.
GoogleService-Info.plist to the ios folder.
firebase_options.dart to the lib folder.

In the build.gradle file, change:

Groovy

// Change this:
classpath 'com.google.gms:google-services:4.3.10'

// to
classpath 'com.google.gms:google-services:4.3.14'

In your Firebase Console, go to project settings and upload the .p8 file obtained from the Apple Developer dashboard along with the Key ID and Team ID.

Step 3: FCM setup in app

This requires you to first set up a global context. It will help you in opening your app once your notification is tapped. Using this global context, you can write a function to navigate to the screen of choice once the notification is tapped.

Dart

import 'package:flutter/material.dart';
import 'package:flutter_pn/screens/chat_screen.dart';

class NavigationService {
  static final GlobalKey<NavigatorState> navigatorKey =
      GlobalKey<NavigatorState>();

  static void navigateToChat(String text) {
    navigatorKey.currentState?.push(
      MaterialPageRoute(builder: (context) => ChatScreen(chatId: text)),
    );
  }
}

Once the user has logged in to CometChat, do the following to setup firebase:

Write a top-level function that is outside of any call. This function will handle the notifications when the app is not in the foreground.
Initialize firebase with the FirebaseOptions from the previous step.
Get an instance of firebase messaging
Request permissions
Set up listeners once the permission is granted:
1. Background notification listener
2. Refreshed token listener that records the FCM token with the extension.
3. Notification tap listeners for background and terminated states of the app.
Make a call to save the FCM token with the extension.

Step 4: Setup for iOS

Open the project in XCode (ios/Runner.xcworkspace )
Add Push notifications capability.
Add Background execution capability with Background fetch & Remote notification enabled.
Inside the ios folder, execute pod install .

Fore more details refer to the Firebase documentation.

Step 5: Run your application

Running the app in profile mode for iOS enables you to see the working once the app is terminated.

Command on Android

flutter run

Command on iOS

flutter run --profile

Step 6: Extension setup (FCM)

Login to CometChat dashboard.
Go to the extensions section.
Enable the Push notifications extension.
Click on the settings icon to open the settings.
Upload the service account file that is available on the Firebase Console.
Make sure that you are including the notification key in the payload. Otherwise, this won’t work.
Push payload message options

The maximum payload size supported by FCM and APNs for push notifications is approximately 4 KB. Due to the inclusion of CometChat’s message object, the payload size may exceed this limit, potentially leading to non-delivery of push notifications for certain messages. The options provided allow you to remove the sender’s metadata, receiver’s metadata, message metadata and trim the content of the text field. The message metadata includes the outputs of the Thumbnail Generation, Image Moderation, and Smart Replies extensions. You may want to retain this metadata if you need to customize the notification displayed to the end user based on these outputs.

APN: Push notifications for messaging on iOS

Apple Push Notifications service or APNs is only available for Apple devices. This will not work on Android devices. This setup ensures that the Push notifications for CometChat messages is sent using APNs device token.

I want to checkout the sample app

Flutter Push notifications sample appImplementation using APNs for iOS.View on Github

Step 1: Install dependencies

Add the following to your pubspec.yaml file under dependencies.

pubspec.yaml

flutter_apns_only: 1.6.0

Step 2: Add capabilities

Open the project in XCode (ios/Runner.xcworkspace )
Add Push notifications capability.
Add Background modes capability with:
1. Remote notifications

Step 3: Update AppDelegate.swift

Add the below to your AppDeletegate.swift file.

Swift

if #available(iOS 11.0, *) {
  UNUserNotificationCenter.current().delegate = self as? UNUserNotificationCenterDelegate
}

Step 4: APN setup in app

Setup a global context to be able to open your app to a specific screen if the notification is tapped. Using the global context, write a function to navigate to the screen of your choice:

Dart

import 'package:flutter/material.dart';
import 'package:flutter_pn/screens/chat_screen.dart';

class NavigationService {
  static final GlobalKey<NavigatorState> navigatorKey =
      GlobalKey<NavigatorState>();

  static void navigateToChat(String text) {
    navigatorKey.currentState?.push(
      MaterialPageRoute(builder: (context) => ChatScreen(chatId: text)),
    );
  }
}

Once the CometChat has been initialized and the user has logged in, do the required setup for the above packages that handle APNs and VoIP notifications.

Step 5: Run on a device

Run your app on a real device as Push notifications don’t work on emulators. Use the profile mode to see the behavior when the app is in the background or terminated states.

Command on iOS

flutter run --profile

Step 6: Extension setup (APN)

Login to CometChat dashboard.
Go to the extensions section.
Enable the Push notifications extension.
Click on the settings icon to open the settings.
Save the Team ID, Key ID, Bundle ID and upload the p8 certificate obtained from Apple Developer console.
Push payload message options

The message metadata includes the outputs of the Thumbnail Generation, Image Moderation, and Smart Replies extensions. You may want to retain this metadata if you need to customize the notification displayed to the end user based on these outputs.

Save the settings.

React Native

Learn how to set up Push notifications for React Native using Firebase Cloud Messaging or FCM.

I want to checkout the sample app

React Native Push notifications sample appView on Github

Firebase Project Setup

Visit Firebase and login/signup using your Gmail ID.

Step 1: Create a new Firebase Project

Head over to the Firebase Console to create a new project.

This is a simple 3 step process where:

You give a name to your project
Add Google Analytics to your project (Optional)
Configure Google Analytics account (Optional)

Click on Create and you are ready to go.

Step 2: Add Firebase to your App

React native setup will require 2 files for Android and iOS:

For Android, you need to download the google-services.json file from the Firebase console.
For iOS, you need to download the GoogleService-Info.plist file from the Firebase console.

Step 3: Download the service account file

Extension settings

Step 1: Enable the extension

Login to CometChat and select your app.
Go to the Extensions section and Enable the Push Notifications extension.
Open up the settings and save the following settings.

Step 2: Save your settings

On the Settings page you need to enter the following:

Set extension version

If you are setting it for the first time, Select V2 to start using the token-based version of the Push Notification extension.
If you already have an app using V1 and want to migrate your app to use V2, then Select V1 & V2 option. This ensures that the users viewing the older version of your app also receive Push Notifications.
Eventually, when all your users are on the latest version of your app, you can change this option to V2, thus turning off V1 (Topic-based) Push Notifications completely.

Select the platforms that you want to support

Select from Web, Android, Ionic (Deprecated), React Native, Flutter & iOS.

Notification payload settings

You can control if the notification key should be in the Payload or not. Learn more about the FCM Messages here.

Push payload message options

The message metadata includes the outputs of the Thumbnail Generation, Image Moderation, and Smart Replies extensions. You may want to retain this metadata if you need to customize the notification displayed to the end user based on these outputs.

Notification Triggers

Select the triggers for sending Push Notifications. These triggers can be classified into 3 main categories:
1. Message Notifications
2. Call Notifications
3. Group Notifications
These are pretty self-explanatory and you can toggle them as per your requirement.

App Setup

Step 1: Initial plugin setup

For React Native, there are numerous plugins available via NPM which can be used to set up push notifications for your apps. react-native-firebase and react-native-notifications are just the two out of many available.
To setup Push Notification, you need to follow the steps mentioned in the Plugin’s Documentation.

At this point, you will have:

Two separate apps created on the Firebase console. (For Android and iOS).
Plugin setup completed as per the respective documentation and our reference.

Step 2: Register FCM Token

This step assumes that you already have a React Native app setup with CometChat installed. Make sure that the CometChat object is initialized and user has been logged in.
On the success callback of user login, you can fetch the FCM Token and register it with the extension as shown below:

JavaScript

// Pseudo-code with async-await syntax

const APP_ID = 'APP_ID';
const REGION = 'REGION';
const AUTH_KEY = 'AUTH_KEY';

const UID = 'UID';
const APP_SETTINGS = new CometChat.AppSettingsBuilder()
  .subscribePresenceForAllUsers()
  .setRegion(REGION)
  .build();

try {
  // First initialize the app
  await CometChat.init(APP_ID, APP_SETTINGS);

  // Login the user
  await CometChat.login(UID, AUTH_KEY);

  // Get the FCM device token
  // You should have imported the following in the file:
  // import messaging from '@react-native-firebase/messaging';
  const FCM_TOKEN = await messaging().getToken();

  // Register the token with Push Notifications (Legacy)
  await CometChat.registerTokenForPushNotification(FCM_TOKEN);
} catch (error) {
  // Handle errors gracefully
}

Registration also needs to happen in case of token refresh as shown below:

JavaScript

// Pseudo-code

// You should have imported the following in the file:
// import messaging from '@react-native-firebase/messaging';
try {
  // Listen to whether the token changes
	return messaging().onTokenRefresh(FCM_TOKEN => {
  	await CometChat.registerTokenForPushNotification(FCM_TOKEN);
  });
  // ...
} catch(error) {
  // Handle errors gracefully
}

For React Native Firebase reference, visit the link below:

Step 3: Receive Notifications

JavaScript

// Pseudo-code
import messaging from '@react-native-firebase/messaging';
import { Alert } from 'react-native';

// Implementation can be done in a life-cycle method or hook
const unsubscribe = messaging().onMessage(async (remoteMessage) => {
  Alert.alert('A new FCM message arrived!', JSON.stringify(remoteMessage));
});

We send Data Notifications and you need to handle displaying notifications at your end. For eg: Using Notifee

Step 4: Stop receiving Notifications

Simply logout the CometChat user and you will stop receiving notifications.
As a good practice, you can also delete the FCM Token by calling deleteToken on the messaging object.

JavaScript

// Pseudo-code using async-await syntax

logout = async () => {
  // User logs out of the app
  await CometChat.logout();

  // You should have imported the following in the file:
  // import messaging from '@react-native-firebase/messaging';
  // This is a good practice.
  await messaging().deleteToken();
};

Advanced

Handle Custom Messages

To receive notification of CustomMessage, you need to set metadata while sending the CustomMessage.

JavaScript

var receiverID = 'UID';
var customData = {
  latitude: '50.6192171633316',
  longitude: '-72.68182268750002',
};

var customType = 'location';
var receiverType = CometChat.RECEIVER_TYPE.USER;
var metadata = {
  pushNotification: 'Your Notification Message',
};

var customMessage = new CometChat.CustomMessage(
  receiverID,
  receiverType,
  customType,
  customData
);

customMessage.setMetadata(metadata);

CometChat.sendCustomMessage(customMessage).then(
  (message) => {
    // Message sent successfully.
    console.log('custom message sent successfully', message);
  },
  (error) => {
    console.log('custom message sending failed with error', error);
    // Handle exception.
  }
);

Converting push notification payload to message object

CometChat SDK provides a method CometChat.CometChatHelper.processMessage() to convert the message JSON to the corresponding object of TextMessage, MediaMessage,CustomMessage, Action or Call.

JavaScript

var processedMessage = CometChat.CometChatHelper.processMessage(JSON_MESSAGE);

Type of Attachment can be of the following the type
1.CometChatConstants.MESSAGE_TYPE_IMAGE
2.CometChatConstants.MESSAGE_TYPE_VIDEO
3.CometChatConstants.MESSAGE_TYPE_AUDIO
4.CometChatConstants.MESSAGE_TYPE_FILE

Push Notification: Payload Sample for Text Message and Attachment/Media Message

Text message
Media message

{
  "alert": "Nancy Grace: Text Message",
  "sound": "default",
  "title": "CometChat",
  "message": {
    "receiver": "cometchat-uid-4",
    "data": {
      "entities": {
        "receiver": {
          "entityType": "user",
          "entity": {
            "uid": "cometchat-uid-4",
            "role": "default",
            "name": "Susan Marie",
            "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-4.webp",
            "status": "offline"
          }
        },
        "sender": {
          "entityType": "user",
          "entity": {
            "uid": "cometchat-uid-3",
            "role": "default",
            "name": "Nancy Grace",
            "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-3.webp",
            "status": "offline"
          }
        }
      },
      "text": "Text Message"
    },
    "sender": "cometchat-uid-3",
    "receiverType": "user",
    "id": "142",
    "sentAt": 1555668711,
    "category": "message",
    "type": "text"
  }
}

{
  "alert": "Nancy Grace: has sent an image",
  "sound": "default",
  "title": "CometChat",
  "message": {
    "receiver": "cometchat-uid-4",
    "data": {
      "attachments": [
        {
          "extension": "png",
          "size": 14327,
          "name": "extension_leftpanel.png",
          "mimeType": "image/png",
          "url": "https://s3-eu-west-1.amazonaws.com/data.cometchat.com/1255466c41bd7f/media/1555671238_956450103_extension_leftpanel.png"
        }
      ],
      "entities": {
        "receiver": {
          "entityType": "user",
          "entity": {
            "uid": "cometchat-uid-4",
            "role": "default",
            "name": "Susan Marie",
            "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-4.webp",
            "status": "offline"
          }
        },
        "sender": {
          "entityType": "user",
          "entity": {
            "uid": "cometchat-uid-3",
            "role": "default",
            "name": "Nancy Grace",
            "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-3.webp",
            "status": "offline"
          }
        }
      },
      "url": "https://s3-eu-west-1.amazonaws.com/data.cometchat.com/1255466c41bd7f/media/1555671238_956450103_extension_leftpanel.png"
    },
    "sender": "cometchat-uid-3",
    "receiverType": "user",
    "id": "145",
    "sentAt": 1555671238,
    "category": "message",
    "type": "image"
  }
}

Integrating ConnectionService and CallKit Using CometChat Push Notification

Currently we can only handle default calling notification
Whenever the user answers the call we use RNCallKeep.backToForeground(); method to bring the app in to foreground but in some devices you might need to add few more permissions for this to work For example, In MIUI 11 you need to permission for Display pop-up windows while running in the background
When the iOS app is in lock state we are not able to open the app so the call start on callkeep it self and you can hear the audio but if you want a video call then the user has to unlock the phone click on the app icon on call screen.
If you want to use the callkit and connection service in foreground then you might consider turning the callNotifications settings in UI kit settings. For more information in UI kit settings check the documentation.

Setup push notification

Android

Kindly follow the instruction for setting Firebase Cloud Messaging explained here

For iOS we use Apple Push Notification service or APNs to send push notification and VOIP notification. To configure this we need to follow some additional steps

Step 1: Create a Certificate Signing Request

To obtain a signing certificate required to sign apps for installation on iOS devices, you should first create a certificate signing request (CSR) file through Keychain Access on your Mac.

Open the Keychain Access from the utility folder, go to Keychain Access > Certificate Assistant > Request a Certificate From a Certificate Authority, and then click.

The Certificate Information dialog box appears. Enter the email address that you use in your Apple Developer account, and enter a common name for your private key. Don’t enter CA email address, choose Saved to disk, and then click the Continue button. <img align=“center” src=”./images/step1.2.png”> <br></br>
Specify the name of your CSR to save and choose the location to save the file on your local disk. Then your CSR file is created, which contains a public/private key pair.

Step 2: Create an SSL certificate

Sign in to your account at the Apple Developer Member Center.
Go to Certificates, Identifiers & Profiles.

Create new Certificate by clicking on the + icon.

Under Services, select - Apple Push Notification services SSL (Sandbox & Production)

Select your App ID from the dropdown.

Upload CSR file., upload the CSR file you created through the Choose File button. To complete the process, choose Continue. When the certificate is ready, choose Download to save it to your Mac.

Step 3: Export and update .p8 certificate

To generate a .p8 key file, go to Apple Developer Account, then select Certificates, IDs & Profiles.
Select Keys and click on the ”+” button to add a new key.
In the new key page, type in your key name and check the Apple Push Notification service (APNs) box, then click “Continue” and click “Register”.
Then proceed to download the key file by clicking Download.
Make note of the Key ID, Team ID and your Bundle ID for saving in the Extension’s settings.

If you wish to use the .p12 certificate instead, do the following:

Type a name for the .p12 file and save it to your Mac.
Browse to the location where you saved your key, select it, and click Open. Add the key ID for the key (available in Certificates, Identifiers & Profiles in the Apple Developer Member Center) and export it.
DO NOT provide an export password when prompted.
The .p12 file will be required in the next step for uploading in the CometChat Dashboard.

Extension settings

Step 1: Enable the extension

Login to CometChat and select your app.
Go to the Extensions section and Enable the Push Notifications extension.
Open the settings for this extension and save the following.

Step 2: Save your settings

On the Settings page you need to enter the following:

Set extension version The extension version has to be set to ‘V2’ or ‘V1 & V2’ in order to use APNs as the provider.
Select Platforms You can select the platforms on which you wish to receive Push Notifications.
Firebase Cloud Messaging Settings This includes the FCM Server key that you can fetch from the Firebase Dashboard.
APNs Settings You can turn off the Production mode when you create a development build of your application. Upload the .p12 certificate exported in the previous step.
Push Notifications Title This is usually the name of your app.
Notification Triggers Select the triggers for sending Push Notifications. These triggers can be classified into 3 main categories:
1. Message Notifications
2. Call Notifications
3. Group Notifications
These are pretty self-explanatory and you can toggle them as per your requirement.

Installation

We need to add two packages for this

React-native-CallKeep

This package also require some additional installation steps. Follow this link to install react-native-callkeep

Bash

npm install react-native-callkeep
//or
yarn add react-native-callkeep

React Native VoIP Push Notification

This package also require some additional installation steps. Follow this link to install react-native-voip-push-notification.

Bash

npm install react-native-voip-push-notification
# --- if using pod
cd ios/ && pod install

App Setup

First you need to Setup CallKeep at the start of the app in Index.js

JavaScript

const options = {
  ios: {
    appName: 'My app name',
  },
  android: {
    alertTitle: 'Permissions required',
    alertDescription: 'This application needs to access your phone accounts',
    cancelButton: 'Cancel',
    okButton: 'ok',
    imageName: 'phone_account_icon',

    foregroundService: {
      channelId: 'com.company.my',
      channelName: 'Foreground service for my app',
      notificationTitle: 'My app is running on background',
      notificationIcon: 'Path to the resource icon of the notification',
    },
  },
};
RNCallKeep.setup(options);
RNCallKeep.setAvailable(true);
let callKeep = new CallKeepHelper();

In order to handle connectionService and CallKit we have made a helper call.

JavaScript

import { CometChat } from '@cometchat/chat-sdk-react-native';
import { Platform } from 'react-native';
import uuid from 'react-native-uuid';
import RNCallKeep, { AnswerCallPayload } from 'react-native-callkeep';
import { navigate } from '../StackNavigator';
import messaging from '@react-native-firebase/messaging';
import VoipPushNotification from 'react-native-voip-push-notification';
import invokeApp from 'react-native-invoke-app';
import KeepAwake from 'react-native-keep-awake';
import { AppState } from 'react-native';
import _BackgroundTimer from 'react-native-background-timer';
export default class CallKeepHelper {
  constructor(msg) {
    if (msg) {
      CallKeepHelper.msg = msg;
    }
    this.setupEventListeners();
    this.registerToken();
    this.checkLoggedInUser();
    this.addLoginListener();
    CallKeepHelper.callEndedBySelf = false;
  }
  static FCMToken = null;
  static voipToken = null;
  static msg = null;
  static callEndedBySelf = null;
  static callerId = '';
  static callerId1 = '';
  static isLoggedIn = false;
  checkLoggedInUser = async () => {
    try {
      let user = await CometChat.getLoggedinUser();
      if (user) {
        if (user) {
          CallKeepHelper.isLoggedIn = true;
        }
      }
    } catch (error) {
      console.log('error checkLoggedInUser', error);
    }
  };

  addLoginListener = () => {
    var listenerID = 'UNIQUE_LISTENER_ID';
    CometChat.addLoginListener(
      listenerID,
      new CometChat.LoginListener({
        loginSuccess: (e) => {
          CallKeepHelper.isLoggedIn = true;
          this.registerTokenToCometChat();
        },
      })
    );
  };

  registerTokenToCometChat = async () => {
    if (!CallKeepHelper.isLoggedIn) {
      return false;
    }

    try {
      if (Platform.OS == 'android') {
        if (CallKeepHelper.FCMToken) {
          let response = await CometChat.registerTokenForPushNotification(
            CallKeepHelper.FCMToken
          );
        }
      } else {
        if (CallKeepHelper.FCMToken) {
          let response = await CometChat.registerTokenForPushNotification(
            CallKeepHelper.FCMToken,
            { voip: false }
          );
        }
        if (CallKeepHelper.voipToken) {
          let response = await CometChat.registerTokenForPushNotification(
            CallKeepHelper.voipToken,
            { voip: true }
          );
        }
      }
    } catch (error) {}
  };

  registerToken = async () => {
    try {
      const authStatus = await messaging().requestPermission();
      const enabled =
        authStatus === messaging.AuthorizationStatus.AUTHORIZED ||
        authStatus === messaging.AuthorizationStatus.PROVISIONAL;
      if (enabled) {
        if (Platform.OS == 'android') {
          let FCM = await messaging().getToken();

          CallKeepHelper.FCMToken = FCM;
          this.registerTokenToCometChat();
        } else {
          VoipPushNotification.registerVoipToken();
          let FCM = await messaging().getAPNSToken();
          CallKeepHelper.FCMToken = FCM;
          this.registerTokenToCometChat();
        }
      }
    } catch (error) {}
  };

  endCall = ({ callUUID }) => {
    if (CallKeepHelper.callerId) RNCallKeep.endCall(CallKeepHelper.callerId);
    _BackgroundTimer.start();
    setTimeout(() => {
      this.rejectCall();
    }, 3000);
  };

  rejectCall = async () => {
    if (
      !CallKeepHelper.callEndedBySelf &&
      CallKeepHelper.msg &&
      CallKeepHelper.msg.call?.category !== 'custom'
    ) {
      var sessionID = CallKeepHelper.msg.sessionId;
      var status = CometChat.CALL_STATUS.REJECTED;
      let call = await CometChat.rejectCall(sessionID, status);
      _BackgroundTimer.stop();
    } else {
      _BackgroundTimer.stop();
    }
  };

  static displayCallAndroid = () => {
    this.IsRinging = true;
    CallKeepHelper.callerId = CallKeepHelper.msg.conversationId;
    RNCallKeep.displayIncomingCall(
      CallKeepHelper.msg.conversationId,
      CallKeepHelper.msg.sender.name,
      CallKeepHelper.msg.sender.name,
      'generic'
    );
    setTimeout(() => {
      if (this.IsRinging) {
        this.IsRinging = false;
        RNCallKeep.reportEndCallWithUUID(CallKeepHelper.callerId, 6);
      }
    }, 15000);
  };

  // NOTE: YOU MIGHT HAVE TO MAKE SOME CHANGES OVER HERE AS YOU AS YOUR IMPLEMENTATION OF REACT-NATIVE-UI-KIT MIGHT BE DIFFERENT. YOU JUST NEED TO CALL THE ACCEPT CALL METHOD AND NAVIGATE TO CALL SCREEN.
  answerCall = ({ callUUID }) => {
    this.IsRinging = false;
    CallKeepHelper.callEndedBySelf = true;
    setTimeout(
      () =>
        navigate({
          index: 0,
          routes: [
            { name: 'Conversation', params: { call: CallKeepHelper.msg } },
          ],
        }),
      2000
    );
    // RNCallKeep.endAllCalls();
    RNCallKeep.backToForeground();
    if (Platform.OS == 'ios') {
      if (AppState.currentState == 'active') {
        RNCallKeep.endAllCalls();
        _BackgroundTimer.stop();
      } else {
        this.addAppStateListener();
      }
    } else {
      RNCallKeep.endAllCalls();
      _BackgroundTimer.stop();
    }
  };

  addAppStateListener = () => {
    AppState.addEventListener('change', (newState) => {
      if (newState == 'active') {
        RNCallKeep.endAllCalls();
        _BackgroundTimer.stop();
      }
    });
  };

  didDisplayIncomingCall = (DidDisplayIncomingCallArgs) => {
    if (DidDisplayIncomingCallArgs.callUUID) {
      if (Platform.OS == 'ios') {
        CallKeepHelper.callerId = DidDisplayIncomingCallArgs.callUUID;
      }
    }
    if (DidDisplayIncomingCallArgs.error) {
      console.log({
        message: `Callkeep didDisplayIncomingCall error: ${DidDisplayIncomingCallArgs.error}`,
      });
    }

    this.IsRinging = true;

    setTimeout(() => {
      if (this.IsRinging) {
        this.IsRinging = false;
        // 6 = MissedCall
        // https://github.com/react-native-webrtc/react-native-callkeep#constants
        RNCallKeep.reportEndCallWithUUID(
          DidDisplayIncomingCallArgs.callUUID,
          6
        );
      }
    }, 15000);
  };

  setupEventListeners() {
    if (Platform.OS == 'ios') {
      CometChat.addCallListener(
        'this.callListenerId',
        new CometChat.CallListener({
          onIncomingCallCancelled: (call) => {
            RNCallKeep.endAllCalls();
          },
        })
      );

      RNCallKeep.addEventListener('didLoadWithEvents', (event) => {
        for (let i = 0; i < event.length; i++) {
          if (event[i]?.name == 'RNCallKeepDidDisplayIncomingCall') {
            CallKeepHelper.callerId = event[i]?.data?.callUUID;
          }
        }
      });

      VoipPushNotification.addEventListener('register', async (token) => {
        CallKeepHelper.voipToken = token;
        this.registerTokenToCometChat();
      });
      VoipPushNotification.addEventListener('notification', (notification) => {
        let msg = CometChat.CometChatHelper.processMessage(
          notification.message
        );

        CallKeepHelper.msg = msg;
      });

      VoipPushNotification.addEventListener(
        'didLoadWithEvents',
        async (events) => {
          if (!events || !Array.isArray(events) || events.length < 1) {
            return;
          }
          for (let voipPushEvent of events) {
            let { name, data } = voipPushEvent;
            if (
              name ===
              VoipPushNotification.RNVoipPushRemoteNotificationsRegisteredEvent
            ) {
              CallKeepHelper.voipToken = data;
            } else if (
              name ===
              VoipPushNotification.RNVoipPushRemoteNotificationReceivedEvent
            ) {
              let msg = CometChat.CometChatHelper.processMessage(data.message);

              CallKeepHelper.msg = msg;
            }
          }
        }
      );
    }

    RNCallKeep.addEventListener('endCall', this.endCall);

    RNCallKeep.addEventListener('answerCall', this.answerCall);
  }

  removeEventListeners() {
    RNCallKeep.removeEventListener('endCall');
    RNCallKeep.removeEventListener('didDisplayIncomingCall');
    RNCallKeep.removeEventListener('didLoadWithEvents');
    VoipPushNotification.removeEventListener('didLoadWithEvents');
    VoipPushNotification.removeEventListener('register');
    VoipPushNotification.removeEventListener('notification');
  }
}

Android

In android we are going to use Firebase push notification to display Call notification So basically when ever we receive a push notification for call we display call notification. we need to add a listener to listen to notification when the app is background or foreground state.

JavaScript

messaging().setBackgroundMessageHandler(async (remoteMessage) => {
  RNCallKeep.setup(options);
  RNCallKeep.setAvailable(true);

  try {
    //Converting the message payload into CometChat Message.
    let msg = CometChat.CometChatHelper.processMessage(
      JSON.parse(remoteMessage.data.message)
    );
    if (msg.category == 'call') {
      //need to check if the notification we received for Call initiated or ended
      if (msg.action == 'initiated') {
        CallKeepHelper.msg = msg; //setting the msg object in call keep helper class
        CallKeepHelper.displayCallAndroid(); //this method is used to display incoming calls in android t
      } else {
        //if sender cancels the call before receiver accept or reject call then we also need to stop our notification
        RNCallKeep.endCall(msg.conversationId);
      }
    }
  } catch (e) {
    console.log(e);
  }
});

iOS

In iOS we use APNs push and voip push notification to display push notification and display call CallKit for calls. The notification are handled in Native iOS You need to add the code in AppDelegate.m file to display CallKit

Objective C

//add this import at the top or the file
#import "RNCallKeep.h"
#import "RNFBMessagingModule.h"
#import <PushKit/PushKit.h>
#import "RNVoipPushNotificationManager.h"




_* <------ add this function *_
- (void)pushRegistry:(PKPushRegistry *)registry didUpdatePushCredentials:(PKPushCredentials *)credentials forType:(PKPushType)type {
  // Register VoIP push token (a property of PKPushCredentials) with server

  [RNVoipPushNotificationManager didUpdatePushCredentials:credentials forType:(NSString *)type];
}

- (void)pushRegistry:(PKPushRegistry *)registry didInvalidatePushTokenForType:(PKPushType)type
{
  // --- The system calls this method when a previously provided push token is no longer valid for use. No action is necessary on your part to re-register the push type. Instead, use this method to notify your server not to send push notifications using the matching push token.
}

// --- Handle incoming pushes
- (void)pushRegistry:(PKPushRegistry *)registry didReceiveIncomingPushWithPayload:(PKPushPayload *)payload forType:(PKPushType)type withCompletionHandler:(void (^)(void))completion {

  // --- NOTE: apple forced us to invoke callkit ASAP when we receive voip push
  // --- see: react-native-callkeep

  // --- Retrieve information from your voip push payload
  NSDictionary *content = [payload.dictionaryPayload valueForKey:@"aps"];
  NSDictionary *sender = [content valueForKey:@"alert"];
  NSString *uuid =[[[NSUUID UUID] UUIDString] lowercaseString];
  NSString *callerName=[sender valueForKey:@"title"];
  NSString *handle = [sender valueForKey:@"title"];

  // --- Process the received push
   [RNVoipPushNotificationManager didReceiveIncomingPushWithPayload:payload forType:(NSString *)type];

  [RNCallKeep reportNewIncomingCall: uuid
                               handle: handle
                           handleType: @"generic"
                             hasVideo: NO
                  localizedCallerName: callerName
                      supportsHolding: YES
                         supportsDTMF: YES
                     supportsGrouping: YES
                   supportsUngrouping: YES
                          fromPushKit: YES
                              payload: nil
                withCompletionHandler: completion];

}

Capacitor, Cordova & Ionic (Deprecated)

Deprecated: The Ionic Cordova SDK is deprecated. For new Ionic/Cordova applications, please use the JavaScript SDK which provides full compatibility.

Learn how to setup Push Notifications for Capacitor, Cordova and Ionic framework using Firebase Cloud Messaging or FCM.

I want to checkout the sample app

Ionic/Cordova Push notifications sample app (Deprecated)View on Github

Firebase Project Setup

Visit Firebase Console and login/signup using your Gmail ID.

Step 1: Create a new Firebase Project

On your Firebase Console, create a new project.

This is a simple 3 step process where:

You give a name to your project
Add Google Analytics to your project (Optional)
Configure Google Analytics account (Optional)

Click on Create and you are ready to go.

Step 2: Add Firebase to your App

React native setup will require 2 files for Android and iOS:

For Android, you need to download the google-services.json file. You can refer to the Android Firebase Project Setup - Step 2 and resume here once done.
For iOS, you need to download the GoogleService-Info.plist file. You can refer to the iOS Firebase Project Setup - Step 2 and resume here once done.
For web, you need to have the Firebase Config object. You can refer to the Web Firebase Project Setup - Step 2 and resume here once done.

Step 3: Download the service account file

Extension settings

Step 1: Enable the extension

Login to CometChat and select your app.
Go to the Extensions section and Enable the Push Notifications extension.
Open the settings for this extension and save the following.

Step 2: Save your settings

On the Settings page you need to enter the following:

Set extension version

If you are setting it for the first time, Select V2 to start using the token-based version of the Push Notification extension.
If you already have an app using V1 and want to migrate your app to use V2, then Select V1 & V2 option. This ensures that the users viewing the older version of your app also receive Push Notifications.
Eventually, when all your users are on the latest version of your app, you can change this option to V2, thus turning off V1 (Topic-based) Push Notifications completely.

Select the platforms that you want to support

Select from Web, Android, Ionic (Deprecated), React Native, Flutter & iOS.

Notification payload settings

You can control if the notification key should be in the Payload or not. Learn more about the FCM Messages here.

Push payload message options

The message metadata includes the outputs of the Thumbnail Generation, Image Moderation, and Smart Replies extensions. You may want to retain this metadata if you need to customize the notification displayed to the end user based on these outputs.

Notification Triggers

Select the triggers for sending Push Notifications. These triggers can be classified into 3 main categories:
1. Message Notifications
2. Call Notifications
3. Group Notifications
These are pretty self-explanatory and you can toggle them as per your requirement.

App Setup

Step 1: Initial plugin setup

For Cordova & Ionic, there are numerous plugins available via NPM which can be used to set up push notifications for your apps like FCM Plugin and Push Plugin.
To setup Push Notification, you need to follow the steps mentioned in the Plugin’s Documentation.

At this point, you will have:

Separate apps created on the Firebase console. (For Web, Android and iOS).
Plugin setup completed as per the respective documentation.

Step 2: Register FCM Token

This step assumes that you already have a React Native app setup with CometChat installed. Make sure that the CometChat object is initialized and user has been logged in.
On the success callback of user login, you can fetch the FCM Token and register it with the extension as shown below:

JavaScript

// Pseudo-code with async-await syntax
// Using the FCM Plugin

const APP_ID = 'APP_ID';
const REGION = 'REGION';
const AUTH_KEY = 'AUTH_KEY';

const UID = 'UID';
const APP_SETTINGS = new CometChat.AppSettingsBuilder()
  .subscribePresenceForAllUsers()
  .setRegion(REGION)
  .build();

try {
  // First initialize the app
  await CometChat.init(APP_ID, APP_SETTINGS);

  // Login the user
  await CometChat.login(UID, AUTH_KEY);

  // Login is successful so next step
  // Get the FCM device token
  // You should have imported the following in the file:
  // import { FCM } from '@ionic-native_fcm';
  const FCM_TOKEN = await fcm.getToken();

  // Register the token for Push Notifications (legacy)
  await CometChat.registerTokenForPushNotification(FCM_TOKEN);
} catch (error) {
  // Handle errors gracefully
}

Registration also needs to happen in case of token refresh as shown below:

JavaScript

// Pseudo-code

// You should have imported the following in the file:
// import { FCM } from '@ionic-native_fcm';
try {
  // Listen to whether the token changes
	return fcm.onTokenRefresh(FCM_TOKEN => {
  	await CometChat.registerTokenForPushNotification(FCM_TOKEN);
  });
  // ...
} catch(error) {
  // Handle errors gracefully
}

For more details, visit documentation.

Step 3: Receive Notifications

JavaScript

// Pseudo-code
import messaging from '@react-native-firebase_messaging';
import { Alert } from 'react-native';

// Implementation can be done in a life-cycle method or hook
const unsubscribe = messaging().onMessage(async (remoteMessage) => {
  Alert.alert('A new FCM message arrived!', JSON.stringify(remoteMessage));
});

Step 4: Stop receiving Notifications

On CometChat.logout will stop receiving notifications.
As a good practice, you can also delete the FCM Token by calling deleteToken on the fcm object.

JavaScript

// Pseudo-code using async-await syntax

logout = async () => {
  // User logs out of the app
  await CometChat.logout();
};

Advanced

Handle Custom Messages

To receive notification of CustomMessage, you need to set metadata while sending the CustomMessage.

JavaScript

var receiverID = 'UID';
var customData = {
  latitude: '50.6192171633316',
  longitude: '-72.68182268750002',
};

var customType = 'location';
var receiverType = CometChat.RECEIVER_TYPE.USER;
var metadata = {
  pushNotification: 'Your Notification Message',
};

var customMessage = new CometChat.CustomMessage(
  receiverID,
  receiverType,
  customType,
  customData
);

customMessage.setMetadata(metadata);

CometChat.sendCustomMessage(customMessage).then(
  (message) => {
    // Message sent successfully.
    console.log('custom message sent successfully', message);
  },
  (error) => {
    console.log('custom message sending failed with error', error);
    // Handle exception.
  }
);

Converting push notification payload to message object

CometChat SDK provides a method CometChat.CometChatHelper.processMessage() to convert the message JSON to the corresponding object of TextMessage, MediaMessage,CustomMessage, Action or Call.

JavaScript

var processedMessage = CometChat.CometChatHelper.processMessage(JSON_MESSAGE);

Type of Attachment can be of the following the type:
CometChatConstants.MESSAGE_TYPE_IMAGE
CometChatConstants.MESSAGE_TYPE_VIDEO
CometChatConstants.MESSAGE_TYPE_AUDIO
CometChatConstants.MESSAGE_TYPE_FILE

Push Notification: Payload Sample for Text Message and Attachment/Media Message

Text message
Media message

{
  "alert": "Nancy Grace: Text Message",
  "sound": "default",
  "title": "CometChat",
  "message": {
    "receiver": "cometchat-uid-4",
    "data": {
      "entities": {
        "receiver": {
          "entityType": "user",
          "entity": {
            "uid": "cometchat-uid-4",
            "role": "default",
            "name": "Susan Marie",
            "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-4.webp",
            "status": "offline"
          }
        },
        "sender": {
          "entityType": "user",
          "entity": {
            "uid": "cometchat-uid-3",
            "role": "default",
            "name": "Nancy Grace",
            "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-3.webp",
            "status": "offline"
          }
        }
      },
      "text": "Text Message"
    },
    "sender": "cometchat-uid-3",
    "receiverType": "user",
    "id": "142",
    "sentAt": 1555668711,
    "category": "message",
    "type": "text"
  }
}

{
  "alert": "Nancy Grace: has sent an image",
  "sound": "default",
  "title": "CometChat",
  "message": {
    "receiver": "cometchat-uid-4",
    "data": {
      "attachments": [
        {
          "extension": "png",
          "size": 14327,
          "name": "extension_leftpanel.png",
          "mimeType": "image/png",
          "url": "https://s3-eu-west-1.amazonaws.com/data.cometchat.com/1255466c41bd7f/media/1555671238_956450103_extension_leftpanel.png"
        }
      ],
      "entities": {
        "receiver": {
          "entityType": "user",
          "entity": {
            "uid": "cometchat-uid-4",
            "role": "default",
            "name": "Susan Marie",
            "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-4.webp",
            "status": "offline"
          }
        },
        "sender": {
          "entityType": "user",
          "entity": {
            "uid": "cometchat-uid-3",
            "role": "default",
            "name": "Nancy Grace",
            "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-3.webp",
            "status": "offline"
          }
        }
      },
      "url": "https://s3-eu-west-1.amazonaws.com/data.cometchat.com/1255466c41bd7f/media/1555671238_956450103_extension_leftpanel.png"
    },
    "sender": "cometchat-uid-3",
    "receiverType": "user",
    "id": "145",
    "sentAt": 1555671238,
    "category": "message",
    "type": "image"
  }
}

Mute Functionality

Learn how to enable your users to mute notifications for certain conversations You can silence one-on-one and/or group conversations for a specific amount of time using the Mute functionality. Aside from that, you can include a Push Notifications section in your apps’ settings. Your users can use this feature to turn off Push Notifications for certain chats or to opt-out of receiving Push Notifications altogether.

Mute or Unmute Chats

Chat comprises anything related to messages like:

New Message (Text, media, or Custom messages like Polls)
Edited Message
Deleted Message
Response in threads

Mute Chats

You can specify the UIDs and/or GUIDs to be muted. You can mute chats for these conversations for a specific amount of time.

Parameters	Value	Description
uids	Array of UIDs	This parameter allows you to mute one-on-one chat for the mentioned UIDs.
guids	Array of GUIDs	This parameter allows you to mute group chat for the mentioned GUIDs.
timeInMS	String consisting of UNIX timestamp	This parameter allows you to mute chats for a specific amount of time for the required UIDs or GUIDs After the mentioned duration, the Push Notifications are received. Eg: “1628425767881”

This functionality uses the callExtension() method provided by CometChat SDK.

JavaScript
Java
Swift

CometChat.callExtension('push-notification', 'POST', 'v2/mute-chat', {
    "uids": ["cometchat-uid-1"],
    "guids": ["cometchat-guid-1"],
    "timeInMS": "1628610749081"
}).then(response => {
    // Success
})
.catch(error => {
    // Error occured
});

import org.json.simple.JSONObject;

JSONObject body=new JSONObject();
JSONArray uids = new JSONArray();
JSONArray guids = new JSONArray();

uids.add("cometchat-uid-1");
guids.add("cometchat-guid-1");

body.put("uids", uids);
body.put("guids", guids);
body.put("timeInMS", "1628425767881");

CometChat.callExtension("push-notification", "POST", "/v2/mute-chat", body,
 new CometChat.CallbackListener < JSONObject > () {
    @Override
    public void onSuccess(JSONObject jsonObject) {
        //On Success
    }
    @Override
    public void onError(CometChatException e) {
        //On Failure
    }
});

CometChat.callExtension(slug: "push-notification", type: .post, endPoint: "v2/mute-chat", body: ["uids":["cometchat-uid-1"], "guids":["cometchat-guid-1"], "timeInMS":"1628610749081"] as [String : Any], onSuccess: { (response) in
         // Success
      }) { (error) in
         // Error occured
      }

Unmute Chats

Used to unmute the chats for certain conversations before the mentioned time during muting.

Parameters	Value	Description
uids	Array of UIDs	This parameter allows you to unmute one-on-one chat for the mentioned UIDs.
guids	Array of GUIDs	This parameter allows you to unmute group chat for the mentioned GUIDs.

This functionality uses the callExtension() method provided by CometChat SDK.

JavaScript
Java
Swift

CometChat.callExtension('push-notification', 'POST', 'v2/unmute-chat', {
    "uids": ["cometchat-uid-1"],
    "guids": ["cometchat-guid-1"]
}).then(response => {
    // Success
})
.catch(error => {
    // Error occured
});

import org.json.simple.JSONObject;

JSONObject body=new JSONObject();
JSONArray uids = new JSONArray();
JSONArray guids = new JSONArray();

uids.add("cometchat-uid-1");
guids.add("cometchat-guid-1");

body.put("uids", uids);
body.put("guids", guids);

CometChat.callExtension("push-notification", "POST", "/v2/unmute-chat", body,
 new CometChat.CallbackListener < JSONObject > () {
    @Override
    public void onSuccess(JSONObject jsonObject) {
        //On Success
    }
    @Override
    public void onError(CometChatException e) {
        //On Failure
    }
});

CometChat.callExtension(slug: "push-notification", type: .post, endPoint: "v2/unmute-chat", body: ["uids":["cometchat-uid-1"], "guids":["cometchat-guid-1"]] as [String : Any], onSuccess: { (response) in
         // Success
      }) { (error) in
         // Error occured
      }

Mute or Unmute Calls

You can mute the notifications for one-on-one or group calls. This works for Default calling (video or audio calls) offered by CometChat.

Mute Calls

You can specify the UIDs and/or GUIDs to be muted. You can mute calls for these conversations for the said amount of time.

Parameters	Value	Description
uids	Array of UIDs	This parameter allows you to mute one-on-one calls for the mentioned UIDs.
guids	Array of GUIDs	This parameter allows you to mute group calls for the mentioned GUIDs.
timeinMS	String consisting of UNIX timestamp	This parameter allows you to mute calls for a specific amount of time for the required UIDs or GUIDs After the mentioned duration, the Push Notifications are received. Eg: “1628425767881”

This functionality uses the callExtension() method provided by CometChat SDK.

JavaScript
Java
Swift

CometChat.callExtension('push-notification', 'POST', 'v2/mute-calls', {
    "uids": ["cometchat-uid-1"],
    "guids": ["cometchat-guid-1"],
    "timeInMS": "1628610749081"
}).then(response => {
    // Success
})
.catch(error => {
    // Error occured
});

import org.json.simple.JSONObject;

JSONObject body=new JSONObject();
JSONArray uids = new JSONArray();
JSONArray guids = new JSONArray();

uids.add("cometchat-uid-1");
guids.add("cometchat-guid-1");

body.put("uids", uids);
body.put("guids", guids);
body.put("timeInMS", "1628425767881");

CometChat.callExtension("push-notification", "POST", "/v2/mute-calls", body,
 new CometChat.CallbackListener < JSONObject > () {
    @Override
    public void onSuccess(JSONObject jsonObject) {
        //On Success
    }
    @Override
    public void onError(CometChatException e) {
        //On Failure
    }
});

CometChat.callExtension(slug: "push-notification", type: .post, endPoint: "v2/mute-calls", body: ["uids":["cometchat-uid-1"], "guids":["cometchat-guid-1"], "timeInMS":"1628610749081"] as [String : Any], onSuccess: { (response) in
         // Success
      }) { (error) in
         // Error occured
      }

Unmute Calls

Used to unmute calls for certain conversations before the mentioned time during muting.

Parameters	Value	Description
uids	Array of UIDs	This parameter allows you to unmute one-on-one calls for the mentioned UIDs.
guids	Array of GUIDs	This parameter allows you to unmute group calls for the mentioned GUIDs.

Used to unmute the calls for certain conversations before the mentioned time during muting.

JavaScript
Java
Swift

CometChat.callExtension('push-notification', 'POST', 'v2/unmute-calls', {
    "uids": ["cometchat-uid-1"],
    "guids": ["cometchat-guid-1"]
}).then(response => {
    // Success
})
.catch(error => {
    // Error occured
});

import org.json.simple.JSONObject;

JSONObject body=new JSONObject();
JSONArray uids = new JSONArray();
JSONArray guids = new JSONArray();

uids.add("cometchat-uid-1");
guids.add("cometchat-guid-1");

body.put("uids", uids);
body.put("guids", guids);

CometChat.callExtension("push-notification", "POST", "/v2/unmute-calls", body,
 new CometChat.CallbackListener < JSONObject > () {
    @Override
    public void onSuccess(JSONObject jsonObject) {
        //On Success
    }
    @Override
    public void onError(CometChatException e) {
        //On Failure
    }
});

CometChat.callExtension(slug: "push-notification", type: .post, endPoint: "v2/unmute-calls", body: ["uids":["cometchat-uid-1"], "guids":["cometchat-guid-1"]] as [String : Any], onSuccess: { (response) in
         // Success
      }) { (error) in
         // Error occured
      }

User Settings

Apart from the feature to mute/unmute a set of UIDs or GUIDs using the above APIs, apps can have push notifications according to the user settings. The following user settings can be set:

Settings	Description
Do Not Disturb	When turned ON, the “Do Not Disturb” parameter disables the Push Notifications entirely for the user. The user stops receiving push notifications until this setting is explicitly turned OFF. This overrides all the following settings.
Allow only Mentions	Until turned OFF, the notifications are only sent for text messages for the mentioned receiver of the message
Mute all one-on-one chat	This parameter can be used to mute chat notifications for all one-on-one conversations. The user will not receive push notifications until this is turned OFF.
Mute all group chat	This parameter can be used to mute chat notifications for all group conversations. The user will not receive push notifications until the parameter is turned OFF.
Mute all one-on-one calls	This preference can be used to mute call notifications for all one-on-one conversations. The user will not receive push notifications until the parameter is turned OFF.
Mute all group calls	This parameter can be used to mute call notifications for all group conversations. The user will not receive push notifications until this is turned OFF.

Save User Settings

The User settings object needs to be submitted as follows. All the fields are mandatory:

User Settings

{
    "user-settings": {
        "dnd": "<boolean>",
        "chat": {
            "allow_only_mentions": "<boolean>",
            "mute_group_actions": "<boolean>",
            "mute_all_guids": "<boolean>",
            "mute_all_uids": "<boolean>"
        },
        "call": {
            "mute_all_guids": "<boolean>",
            "mute_all_uids": "<boolean>"
        }
    }
}

This functionality uses the callExtension() method provided by CometChat SDK.

JavaScript
Java
Swift

const userSettings = {
    "user-settings": {
        "dnd": false,
        "chat": {
            "allow_only_mentions": true,
            "mute_group_actions": false,
            "mute_all_guids": false,
            "mute_all_uids": false
        },
        "call": {
            "mute_all_guids": false,
            "mute_all_uids":false
        }
    }
};
CometChat.callExtension('push-notification', 'POST', 'v2/user-settings', userSettings).then(response => {
    // Success
})
.catch(error => {
    // Error occured
});

JSONObject chatSettings = new JSONObject();
chatSettings.put('allow_only_mentions', false);
chatSettings.put('mute_group_actions', false);
chatSettings.put('mute_all_guids', false);
chatSettings.put('mute_all_uids', false);

JSONObject callSettings = new JSONObject();
callSettings.put('mute_all_guids', false);
callSettings.put('mute_all_uids', false);

JSONObject userSettings = new JSONObject();
userSettings.put('dnd', true);
userSettings.put('chat', chatSettings);
userSettings.put('call', callSettings);

CometChat.callExtension("push-notification", "GET", "/v2/user-settings", null,
 new CometChat.CallbackListener < JSONObject > () {
    @Override
    public void onSuccess(JSONObject jsonObject) {
        //On Success
    }
    @Override
    public void onError(CometChatException e) {
        //On Failure
    }
});

CometChat.callExtension(slug: "push-notification", type: .get, endPoint: "v2/user-settings", body: {
    "user-settings": {
        "dnd": true_false,
        "chat": {
            "allow_only_mentions": true_false,
            "mute_group_actions": true_false,
            "mute_all_guids": true_false,
            "mute_all_uids": true_false
        },
        "call": {
            "mute_all_guids": true_false,
            "mute_all_uids":true_false
        }
    }
}, onSuccess: { (response) in
         // Success
      }) { (error) in
         // Error occured
      }

Fetch User Settings

Fetches all the user settings that are saved by the user. This also returns the list of muted UIDs and GUIDs along with the said time for muting. This functionality uses the callExtension() method provided by CometChat SDK.

JavaScript
Java
Swift

CometChat.callExtension('push-notification', 'GET', 'v2/user-settings', null).then(response => {
    // Success
})
.catch(error => {
    // Error occured
});

CometChat.callExtension("push-notification", "GET", "/v2/user-settings", null,
 new CometChat.CallbackListener < JSONObject > () {
    @Override
    public void onSuccess(JSONObject jsonObject) {
        //On Success
    }
    @Override
    public void onError(CometChatException e) {
        //On Failure
    }
});

CometChat.callExtension(slug: "push-notification", type: .get, endPoint: "v2/user-settings", body: nil, onSuccess: { (response) in
         // Success
      }) { (error) in
         // Error occured
      }

Token Management

Register tokens

Token registration can now be done using the callExtension method provided by the CometChat SDK. The token can be FCM token or APNs token and VoIP token. This can be achieved using the code snippet below: For FCM token:

JavaScript
Java
Swift

// For FCM Token
CometChat.callExtension('push-notification', 'POST', 'v2/tokens', {
	fcmToken: "fcm_token"
})
.then(response => {
	// Success response
})
.catch(error => {
	// Error occured
})

import org.json.simple.JSONObject;

JSONObject body=new JSONObject();

body.put("fcmToken", "fcm_token");

CometChat.callExtension("push-notification", "POST", "/v2/tokens", body,
 new CometChat.CallbackListener < JSONObject > () {
    @Override
    public void onSuccess(JSONObject jsonObject) {
        //On Success
    }
    @Override
    public void onError(CometChatException e) {
        //On Failure
    }
});

CometChat.callExtension(slug: "push-notification", type: .post, endPoint: "v2/tokens", body: ["fcmToken": "fcm_token"] as [String : Any], onSuccess: { (response) in
         // success response
      }) { (error) in
         // Error occured
      }

For APNs tokens:

JavaScript
Java
Swift

// For APNs tokens
CometChat.callExtension('push-notification', 'POST', 'v2/tokens', {
	apnsToken: "apns_token",
  voipToken: "voip_token"
})
.then(response => {
	// Success response
})
.catch(error => {
	// Error occured
})

import org.json.simple.JSONObject;

JSONObject body=new JSONObject();

body.put("apnsToken", "apns_token");
body.put("voipToken", "voip_token");

CometChat.callExtension("push-notification", "POST", "/v2/tokens", body,
 new CometChat.CallbackListener < JSONObject > () {
    @Override
    public void onSuccess(JSONObject jsonObject) {
        //On Success
    }
    @Override
    public void onError(CometChatException e) {
        //On Failure
    }
});

CometChat.callExtension(slug: "push-notification", type: .post, endPoint: "v2/tokens", body: ["apnsToken": "apns_token", "voipToken": "voip_token"] as [String : Any], onSuccess: { (response) in
         // Success response
      }) { (error) in
         // Error occured
      }

Get tokens

This provides a list of all the Push Notifications tokens that have been registered for the current user. The tokens are segregated based on the platform.

JavaScript
Java
Swift

CometChat.callExtension('push-notification', 'GET', 'v2/tokens', null)
.then(response => {
	// Success response
})
.catch(error => {
	// Error occured
})

CometChat.callExtension("push-notification", "GET", "/v2/tokens", null,
 new CometChat.CallbackListener < JSONObject > () {
    @Override
    public void onSuccess(JSONObject jsonObject) {
        //On Success
    }
    @Override
    public void onError(CometChatException e) {
        //On Failure
    }
});

CometChat.callExtension(slug: "push-notification", type: .get, endPoint: "v2/tokens", body: nil, onSuccess: { (response) in
         // Success response
      }) { (error) in
         // Error occured
      }

The response will be as follows:

JSON

{
  "ios": [
    "cLztQGbuPA91bG3rkRcgcQYvlKuTlWGmHC1RnCwrTrbyT0VF"
  ],
  "web": [
    "cLztQGbuPA91bG3rkRcgcQYvlKuTlWGmHC1RnxyzTrbyT0VF"
  ],
  "android": [
    "dLztQGbuPA91bG3rkRckcQYvlKuTlWGmHC1RnxyzTrbyT0VF"
  ]
}

Delete tokens

Token deletion is handled implicitly by the CometChat.logout() method. That is, once the user is logged out of the current CometChat session, his/her registered Push Notification token automatically gets deleted. The same can be achieved explicitly by making a call to the extension using callExtension method as shown below. However, the token that is deleted belongs to the current session of the end-user by passing all=false as a parameter.

JavaScript
Java
Swift

CometChat.callExtension('push-notification', 'DELETE', 'v2/tokens', {
  all: false, // true when ALL the registered tokens for the logged-in user need to be deleted
})
  .then((response) => {
    // Success response
  })
  .catch((error) => {
    // Error occured
  });

import org.json.simple.JSONObject;

JSONObject body=new JSONObject();

body.put("all", false); // true when ALL the registered tokens for the logged-in user need to be deleted

CometChat.callExtension("push-notification", "DELETE", "/v2/tokens", body,
 new CometChat.CallbackListener < JSONObject > () {
    @Override
    public void onSuccess(JSONObject jsonObject) {
        //On Success
    }
    @Override
    public void onError(CometChatException e) {
        //On Failure
    }
});

CometChat.callExtension(slug: "push-notification", type: .delete, endPoint: "v2/tokens", body: ["all": false] as [String : Any], onSuccess: { (response) in // true when ALL the registered tokens for the logged-in user need to be deleted
         // Details about the created poll
      }) { (error) in
         // Error occured
      }

All the tokens for the current user will be deleted if you pass all=true. This needs to be used with care as the other logins of the current user will stop receiving Push Notifications.

​Implementation

​Web

I want to checkout the sample app

​Firebase Project Setup

​Step 1: Create a new Firebase Project

​Step 2: Add Firebase to your Web App

​Step 3: Download the service account file

​Extension settings

​Step 1: Enable the extension

​Step 2: Save your settings

​Web App Setup

​Step 1: Folder and files setup

​Step 2: Add the Firebase Config to the HTML File

​Step 3: Setup index.html file

​Step 4: Setup the service worker file

​Step 5: Setup the PushNotification.js file

​Start receiving Push Notifications

​Stop receiving Push Notifications

​Custom body for notifications

​Android

I want to checkout the sample app

​Firebase Project Setup

​Step 1: Create a new Firebase Project

​Step 2: Add Firebase to your Android App

​Step 3: Download the service account file

​Extension settings

​Step 1: Enable the extension

​Step 2: Save your settings

​Android App Setup

​Step 1: Register the FCM Token on user login

​Step 2: Receive notifications

​Advanced

​Sending Custom Notification body

​Converting Push Notification Payloads to Message Objects

​Handle Push Notification Actions.

​Android Connection Service

I want to checkout the sample app

​Firebase Project Setup

​Step 1: Create a new Firebase Project

​Step 2: Add Firebase to your Android App

​Step 3: Download the service account file

​Extension settings

​Step 1: Enable the extension

​Step 2: Save your settings

​Android App Setup

​Step 1: Register the FCM Token on user login

​Step 2: Setup ConnectionService.

​Step 3: Receive notifications

​Converting Push Notification Payloads to Message Objects

​iOS FCM

I want to checkout the sample app

​Firebase Project Setup

​Step 1: Create a new Firebase Project

​Step 2: Add Firebase to your iOS App

​Step 3: Download the service account file

​Extension settings

​Step 1: Enable the extension

​Step 2: Save your settings

​Get APNS Credentials

​Step 1: Create a Certificate Signing Request

​Step 2: Create an SSL certificate

​Step 3: Export and update .p12 file to Firebase

​Step 4: Upload your APNs Certificates

​iOS App Setup

​Step 1: Initial Firebase Cloud Messaging client setup

​Step 2: Register the FCM Token

​Step 3: Start receiving Push Notifications

​Advanced

​Convert Push Notification payload to Message object

​Miscellaneous

​iOS APNs

I want to checkout the sample app

​Get APNS Credentials

​Step 1: Create a Certificate Signing Request

​Step 2: Create an SSL certificate

​Step 3: Export and update .p8 certificate

​Extension settings

​Step 1: Enable the extension

​Step 2: Save your settings

​iOS App Setup

Implementation

Web

Firebase Project Setup

Step 1: Create a new Firebase Project

Step 2: Add Firebase to your Web App

Step 3: Download the service account file

Extension settings

Step 1: Enable the extension

Step 2: Save your settings

Web App Setup

Step 1: Folder and files setup

Step 2: Add the Firebase Config to the HTML File

Step 3: Setup index.html file

Step 4: Setup the service worker file

Step 5: Setup the PushNotification.js file

Start receiving Push Notifications

Stop receiving Push Notifications

Custom body for notifications

Android

Firebase Project Setup

Step 1: Create a new Firebase Project

Step 2: Add Firebase to your Android App

Step 3: Download the service account file

Extension settings

Step 1: Enable the extension

Step 2: Save your settings

Android App Setup

Step 1: Register the FCM Token on user login

Step 2: Receive notifications

Advanced

Sending Custom Notification body

Converting Push Notification Payloads to Message Objects

Handle Push Notification Actions.

Android Connection Service

Firebase Project Setup

Step 1: Create a new Firebase Project

Step 2: Add Firebase to your Android App

Step 3: Download the service account file

Extension settings

Step 1: Enable the extension

Step 2: Save your settings

Android App Setup

Step 1: Register the FCM Token on user login

Step 2: Setup ConnectionService.

Step 3: Receive notifications

Converting Push Notification Payloads to Message Objects

iOS FCM

Firebase Project Setup

Step 1: Create a new Firebase Project

Step 2: Add Firebase to your iOS App

Step 3: Download the service account file

Extension settings

Step 1: Enable the extension

Step 2: Save your settings

Get APNS Credentials

Step 1: Create a Certificate Signing Request

Step 2: Create an SSL certificate

Step 3: Export and update .p12 file to Firebase

Step 4: Upload your APNs Certificates

iOS App Setup

Step 1: Initial Firebase Cloud Messaging client setup

Step 2: Register the FCM Token

Step 3: Start receiving Push Notifications

Advanced

Convert Push Notification payload to Message object

Miscellaneous

iOS APNs

Get APNS Credentials

Step 1: Create a Certificate Signing Request

Step 2: Create an SSL certificate

Step 3: Export and update .p8 certificate

Extension settings

Step 1: Enable the extension

Step 2: Save your settings

iOS App Setup

Initial Setup

Receive Push Notifications

Miscellaneous

Create view controller for Calls

Convert Push Notification payload to Message object