How to send notifications using Android Firebase

This post covers how to send push notification using Android Firebase.

If you want to add on_click_action or any payload to notification (not only title/body) following link will be useful: https://firebase.google.com/docs/cloud-messaging/http-server-ref#data

N?ote: firebase console will not give you to add any payload - so for test use postman or any other app to make POST request https://fcm.googleapis.com/fcm/send.

Example with notification title , body and payload:

Headers:

Content-Type:application/json

Authorization:key=CloudMessagingKeyFromFirebaseConsole

Body:

{ 

 "to" : "UserTokenThatArrived OnTokenRefresh()",

 "notification" : {

   "body" : "great match!",

   "title" : "Portugal vs. Denmark"

  },

  "data": {

  "key": "value"

 }

}

Note2:

If app is open payload will arrive to FirebaseMessagingService -> onMessageReceived.

If app is closed payload will arrive as extra to launch activity.

Note 3:

Another more updated article