Copyright (c) 2018 Google Inc. All rights reserved.

This is the Google Sign-In C++ API, for Android and iOS. The intent is to unify the iOS (Objective-C) and Android (Java) native interfaces into a single common C++ interface that abstracts all of the platform specific details, however currently only the Android implementation is supported.

This is intended for projects that require OAuth ID tokens for server auth codes.

See Google Sign-In for Android for information on getting started.

On Android you'll need to add the dependency com.google.android.gms:play-services-auth, based on the setup guide.

To authenticate you need to create credentials on the API console for your application. The steps to do this are available on Google Sign-In for Android. In order to access ID tokens or server auth codes, you also need to configure a web client ID. From the Credentials Page on the API Console select the "Create credentials" dropdown, and choose OAuth Client ID. On the next page choose Web Application, name the client whatever you like, and then click "Create".

First be sure to edit the sample source configuration:

In testapp/src/common_main.cpp, replace "YOUR_WEB_CLIENT_ID_HERE" with your web client id, from the configuration step above.

The android build is setup using gradle.

Navigate to the testapp directory, and build using the "build" target:

cd testapp ./gradlew build