Google login get access token with new GoogleSignInOptions

Question

My android app currently uses the GoogleAuthUtil to signin users and fetch an access_token which is passed to the backend (code snippets below which show creating t

Answer 1

After signing in you'll be able to get the token:

final String token = GoogleAuthUtil.getToken(mAppContext, mAccountName, AUTH_TOKEN_TYPE);

dont forget to do it an Asynctask. for more detail have a look at here

EDIT:

Note that, despite the method name:

GoogleAuthUtil.getToken()

it does not give you an OAuth Token, it rather returns a "short-lived authorization code" according to the documentation.

What I should do after getting the Authorization Code by calling the GoogleAuthUtil.getToken() ?

You should transmit the Authorization Code to your backend server over HTTPS. Only from your server you should attempt to receive Access and/or Refresh token, not in your app.