Adding Sign-In | Android Developers
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Adding Sign-In

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The Google+ platform for Android lets you authenticate a user with the same credentials they use on Google every day. Once a user signs in with Google, you can create more engaging experiences and drive usage of your app.

The Google+ Android API allows you to integrate sign-in and social features into your app.

Key Developer Features

Trusted authentication

Google+ Sign-In is a simple, trusted, and secure way to let people sign in to your app with their Google credentials and bring along their Google+ info.
Add sign-in.

Access the profile and social graph

Once users have signed in with Google, your app can welcome them by name, display their picture, connect them with friends, and lots more.
Access the social graph.

Stand out in the stream

Interactive posts is a rich way of sharing to Google+. It lets users prompt friends to take specific actions in your app from a Google+ post, like "listen," "RSVP," "check-in," and over 100 more actions.
Post interactive content.

Recommend content

Add a native +1 button so users can recommend content from your app. These endorsements can give your app more credibility and help it grow faster.
Add the +1 button.

Get Started

The Google+ Android APIs are part of the Google Play services platform. To use Google+ features, set up the Google Play services SDK in your app development project. For more information, see the Getting Started guide for the Google+ Platform for Android