Google Api and android Oauth INVALID_AUDIENCE error

Question

I am getting a GoogleAuthException: Unknown error, while doing a GoogleAuthUtil.getToken.

Just before the exception I see

Answer 1

Looks like that should work; here's the scope-init code from my app which does work.

private static final String SCOPE = "audience:server:client_id:" + SERVER_CLIENT_ID;

So it smells to me like there's a problem with the client id. Remember that

1. You have to have a project with two client ids
2. One is the one for your android app, with the SHA & package & so on
3. The other is for the server side that you're going to send the token off to

It's the client ID from #3 that goes after ...:client_id: