HOW TO IMPLEMENT FIREBASE CLOUD MESSAGING IN ANDROID?
Step by Step guide to implementing firebase in native android
What is Firebase Cloud Messaging (FCM) ?
Sending messages in terms of notification from the google server to any device
Benefits by using FCM -> Google Product -> Easy to Integrate -> Fast Service -> Send chat message -> send offer details, discounts etc.
To implement Firebase Cloud Messaging (FCM) in our app add one dependency to your application app.gradle file
create a project to the google firebase console. After that follow few steps to send notifications to our device