Importing google user profile to remote db on android

Issue

I'm building an app on android that has the features of Log-in with facebook and Log-in with Google. Assuming the user chooses to login with google, I would like to ask for permission and collect basic information such as name,age,sex,location,email from his profile and save it on my server's database.

Here is the problem: Which api should I actually use to grab these info? I don't think google+ api would be a proper choice since not every google user has one. After checking Google-api-java-client documentation, I still cant find anything useful.
There seem to be no library for this basic operation.

The only thing that seems relevant is Google Apps Profile API but
1. it's outdated.
2. Its not free.

I'm too confused and I hope someone can guide me through this nightmare.

Edit: found some new relevant info but I'm still hoping to find an official java library for this: https://oauthssodemo.appspot.com/step/1

Solution

Found what I was looking for: http://javadoc.google-api-java-client.googlecode.com/hg-history/c35433d3077dc4eb89dccb25618dc70dbd375d65/apis/oauth2/v2/com/google/api/services/oauth2/model/Userinfo.html

Answered By - Nima GT