Simple example of sending a notification

Send a notification from one user to another using Firebase.

Screenshots

Installation

Step 1:Add Libraries

Add firebase messaging library:

   implementation 'com.google.firebase:firebase-messaging-ktx:23.0.0'

Add this lines:

biuld.gradle(app)

plugins {
    ...
    id 'com.google.gms.google-services'
}

biuld.gradle(Project)

plugins {
    ...
    id 'com.google.gms.google-services' version '4.3.10' apply false
}

Step 2:

To use Firebase in your Android app, you need to register your app with your Firebase project. Registering your app is often called "adding" your app to your project.

Step 3:

Download and put google-serveces.json into project:

Step 4:

Get your Server key from firebase console and put here.

 interface ApiService {
    @Headers(
            "Content-Type:application/json",
            "Authorization:key=your_Server_key"
    @POST("fcm/send")
    fun sendNotifcation(@Body body: Response?): Call<MyResponse?>?
}