Adding Firebase Configuration (google-services.json) File to Your Android App

Step 1: Create a Firebase Project

If you already have a Firebase Project, jump to Step 2. Otherwise follow the steps at Creating a Firebase Project.

Step 2: Register your app with Firebase

• Go to the Firebase console of the project.
• In the center of the project overview page, click the Android icon.

  

• Enter your app's package name in the Android package name field.
  (Optional) Enter other app information: App nickname and Debug signing certificate SHA-1.

  

• Click Register App.

Step 3: Add a Firebase configuration file

• Add the Firebase Android configuration file (google-services.json) to your app:

  

  1. Click Download google-services.json to obtain your Firebase Android config file.
  2. Move the downloaded config file into the module (app-level) root directory of your app (usually <project>/app).
• To make the values in your google-services.json config file accessible, you need the Google services Gradle plugin (google-services).
  1. In your root-level (project-level) Gradle file (<project>/build.gradle), add the Google services plugin as a buildscript dependency:
     build.gradle

     buildscript {
     
         repositories {
             // Make sure that you have the following two repositories
             google()  // Google's Maven repository
             mavenCentral()  // Maven Central repository
         }
         
         dependencies {
             ...
             // Add the dependency for the Google services Gradle plugin
             classpath 'com.google.gms:google-services:4.3.14'
         }
     }

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  2. In your module (app-level) Gradle file (usually <project>/app/build.gradle), add the Google services plugin:
     app/build.gradle

     plugins {
         id 'com.android.application'
         
         // Add the Google services Gradle plugin
         id 'com.google.gms.google-services' apply true
         ...
     }

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  3. Click Sync Now
  .