# Push Notifications

This page will describes how to enable and receive push notifications trough Mobile SDK for Android using Firebase Cloud Messaging.

# Setup Firebase project and Enable Google Service to Receive Push Notifications

# Step 1. Create Firebase Project and enable Google Services for you app

If you already have a Firebase project with enabled Google Services you can skip this section and continue with the next step. Otherwise go to Firebase Console (opens new window) and create a new project following these steps:

Step 1.1 - Create a new project:

Create a project

Step 1.2 - Go to Messaging and select Android:
Go to Messaging

Step 1.3 - Register your app:

Register your app

# Step 2. Setup your app to receive a push notifications

Step 2.1 - Download the google-services.json configuration file and move it into your module's (app-level) root directory.

Add google-service.json

Step 2.2 - Add Google Services and Firebase Cloud Messaging to your app.

In your root-level (project-level) Gradle file (/build.gradle.kts or /build.gradle), add the Google services plugin as a dependency:

plugins {
  // ...
  id("com.google.gms.google-services") version "4.4.1" apply false

In your module (app-level) Gradle file (usually //build.gradle.kts or //build.gradle), add the Google services plugin:

plugins {
  // ...

In your module (app-level) Gradle file (usually //build.gradle.kts or //build.gradle), add the dependency for the Firebase Cloud Messaging library for Android.

dependencies {

# Step 3. Add your to Smartsupp SDK Android settings

Step 3.1 - Go to Service Accounts in you Firebase project settings and Generate new private key. This will download a .json file.

Generate private key

Step 3.2 - Then Go to Smartsupp Mobile SDK for Android settings (opens new window) and upload your downloaded private key from Firebase to Smartsupp.

Upload private key to Smartsupp

# Using Smartsupp Firebase Cloud Messaging setups

# Option 1. Default implementation

Smartsupp SDK for Android comes with default implementation of FirebaseMessagingService. This solution offers pre-defined implementation for onNewToken and onMessageReceived methods.

# Option 2. Custom FCM Setup

If your application already utilizes FCM (Firebase Cloud Messaging), you'll need to update your implementation of FirebaseMessagingService to correctly receive Smartsupp Push notifications. You need to make two changes. First, in onMessageReceived, after you receive a message, call SmartsuppPushMessageHandler.isSmartsuppPushMessage(RemoteMessage), which decides if the received message is from Smartsupp or not. If the message returns true, then call SmartsuppPushMessageHandler.handlePushMessage(Context, RemoteMessage). To get the SmartsuppPushMessageHandler instance, call SmartsuppPushMessageHandler.instance().

Custom TaskStackBuilder

If you want to create a custom back stack for received notifications, you can pass a TaskStackBuilder into SmartsuppPushMessageHandler.handlePushMessage(Context, RemoteMessage, TaskStackBuilder).

Secondly, in onNewToken, call SmartsuppPushMessageHandler.updateToken(String), which will send the new token to Smartsupp.
The implementation can look like this:

class SampleAppPushNotificationService : FirebaseMessagingService() {

  private val smartsuppPushMessageHandler = SmartsuppPushMessageHandler.instance()

  override fun onMessageReceived(message: RemoteMessage) {

    if (smartsuppPushMessageHandler.isSmartsuppPushMessage(message)) {
      val taskStackBuilder = TaskStackBuilder.create(this)
      taskStackBuilder.addNextIntent(Intent(this, MainActivity::class.java))

      smartsuppPushMessageHandler.handlePushMessage(context = this, message = message, stackBuilder = taskStackBuilder)

  override fun onNewToken(token: String) {

# Set your Push Notification Icon

If you want to change notification icon simply add smartsupp_push_notification_icon.png to your drawable folder for all supported densities (vector drawables cannot be used for notifications icon).


# Push Notification Permission

From Android 13 and above, you should request permission to receive notifications. Firstly, add the permission to AndroidManifest.xml.

<manifest ...>
  <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
  <application ...>

Secondly, ask for permission in the appropriate situation. Create a launcher and then ask for permission. An example code can look like this:

registerForActivityResult(ActivityResultContracts.RequestPermission()) { isGranted ->
  if (isGranted) {
    // Handle granted permission

The following code snippet demonstrates how to request a permission using a request code:

when {
  ContextCompat.checkSelfPermission(this, Manifest.permission.POST_NOTIFICATIONS) != PackageManager.PERMISSION_GRANTED -> {

  shouldShowRequestPermissionRationale(Manifest.permission.POST_NOTIFICATIONS) -> {

  else -> {
    // Permission is granted

Asking for permission guidelines

For asking permission, check the official documentation (opens new window).