1. Apply for Gmail Email
2. Environmental Requirements:
Physical devices for development and testing because the Google Play service cannot be installed in the emulator.
Your project needs to be compiled using Android 2.2 (Froyo) or later.
Eclipse is configured to use Java 1.6
Need mobile support for Google Play service SDK
3. Background settings:
Backstage URL: https://console.developers.google.com/project
In the Google APIs console, create an API project for your app.
In the Services pane, enable the Google + API and all the other APIs your app needs.
In the API Access pane, click Create OAuth 2.0 Client ID to create an OAUTH 2.0 client ID
1) need to fill in the application package name
2) required to complete the certification fingerprint (shal)
4. Technology realization:
1, need to introduce Google-play-services_lib package, located in Google<android-sdk-folder (that is, the path of the SDK) >/extras/google/google_play_services \libproject\google-play-services_lib
2, Import plussampleactivity Project as a code reference, generally located in <android-sdk-folder (that is, the path of the SDK) >/extras/google/google_play_services\ Samples\plus
5. Reference documents
Google + official website:https://developers.google.com/+/
Reference URL: http://www.baijingapp.com/question/6744
Google Plus Research results