1page.title=Adding Sign-In 2page.tags=authentication,signin,social,google+ 3page.article=true 4page.trainingcourse=true 5@jd:body 6 7 8<img src="{@docRoot}images/google/gps-googleplus.png" 9 width="300" 10 style="float:right;margin:0 0 20px 20px" 11 alt="Google maps sample image"> 12 13<p> 14 The Google+ platform for Android lets you authenticate a user with the same credentials they use 15 on Google every day. Once a user signs in with Google, you can create more engaging experiences 16 and drive usage of your app. 17</p> 18 19<p> 20 The <a href="https://developers.google.com/+/mobile/android/">Google+ Android API</a> allows 21 you to integrate sign-in and social features into your app. 22</p> 23 24 25<h2 id="features">Key Developer Features</h2> 26 27<h4>Trusted authentication</h4> 28<p> 29 Google+ Sign-In is a simple, trusted, and secure way to let people sign in to your app with their 30 Google credentials and bring along their Google+ info.<br> 31 <a href="https://developers.google.com/+/mobile/android/sign-in" class="external-link">Add 32 sign-in</a>. 33</p> 34 35<h4>Access the profile and social graph</h4> 36<p> 37 Once users have signed in with Google, your app can welcome them by name, display their picture, 38 connect them with friends, and lots more.<br> 39 <a href="https://developers.google.com/+/mobile/android/people" class="external-link">Access the 40 social graph</a>. 41</p> 42 43<h4>Stand out in the stream</h4> 44<p> 45 Interactive posts is a rich way of sharing to Google+. It lets users prompt friends to take 46 specific actions in your app from a Google+ post, like "listen," "RSVP," "check-in," and over 100 47 more actions.<br> 48 <a class="external-link" href="https://developers.google.com/+/mobile/android/share">Post 49 interactive content</a>. 50</p> 51 52<h4>Recommend content</h4> 53<p> 54 Add a native +1 button so users can recommend content from your app. These endorsements can give 55 your app more credibility and help it grow faster.<br> 56 <a class="external-link" href="https://developers.google.com/+/mobile/android/recommend">Add the 57 +1 button</a>. 58</p> 59 60 61<h2 id="start">Get Started</h2> 62<p> 63 The Google+ Android APIs are part of the Google Play services platform. To use Google+ features, 64 set up the Google Play services SDK in your app development project. For more information, see 65 the <a class="external-link" href= 66 "https://developers.google.com/+/mobile/android/getting-started">Getting Started</a> guide for 67 the Google+ Platform for Android 68</p>