How to authenticate with Google Accoutnt ?

[YinYanSI]

 

How can we create user authentication with goolge accout with mgwt or gwt-phonegap ? I would like to use purge java api not phonegap javascript api.
I would like to create activity with username and password to login user with google accout

that user already has.

I woruld also get user info email phone number ... from user google account.

Which api librarys should I use? Do anybody have any tutorial link for this?

[Tomek Kańka]

Look at: http://code.google.com/p/gwt-oauth2/

[YinYanSI]

OK thanx for this link. I create gwt app copy/paste this code . compile gwt app. App works OK.

BUT I have some problem with "Client ID Settings". I have mgwt/gwt-phonegap Project.

My finnaly app is android app. or iphone app.  

What should be my "Application type"  -> "Web application"(Accessed by web browsers over a network.) or "Installed aplicatiino"(Runs on a desktop computer or handheld device (like Android or iPhone))

What sould be my "Your site or hostname" ? If I understand it should not be http://localhost or http://127.0.0.1 or my internal ip 192.168.1.10 or similar? 

Must "Your site or hostname" be my external IP for exmaple http://[my external ip]:8080/  (must I specify also port if my 8080 if my server is on 8080 port) ?

Can you give me some example how to register app?