Android 9 Development Cookbook - Third Edition

How to do it...

After completing the preceding Getting ready section, follow these steps:

1. Copy the google-services.json file you downloaded in the Getting ready section to your app folder (<project folder>\GoogleSignIn\app)
2. Open the app module Gradle build file, build.gradle (Module: app), and add the following statement to the dependencies section:

implementation 'com.google.android.gms:play-services-auth:16.0.0'

3. Open activity_main.xml and replace the existing TextView with the following XML:

<com.google.android.gms.common.SignInButton    android:id="@+id/signInButton"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    app:layout_constraintBottom_toBottomOf="parent"    app:layout_constraintLeft_toLeftOf="parent"    app