Я настраиваю GoogleSignInOptions и Google Api Client следующим образом.

    GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
            .requestIdToken(getString(R.string.server_client_ID))
            .build();

    mGoogleApiClient = new GoogleApiClient.Builder(this)
            .enableAutoManage(this /* FragmentActivity */, this /* OnConnectionFailedListener */)
            .addApi(Auth.GOOGLE_SIGN_IN_API, gso)
            .addApi(Plus.API)
            .build();

и мой идентификатор клиента веб-приложения Google вот так:

 1020847812450-xxxxxxxxxxxxxxxxxxxxxxx.apps.googleusercontent.com

но всегда на onActivityResult

    if (requestCode == RC_SIGN_IN) {
        GoogleSignInResult result = Auth.GoogleSignInApi.getSignInResultFromIntent(data);
        handleSignInResult(result);
    }

возвращает ложь

где я делаю не так здесь: S

Начальный раздел

    mGoogleApiClient.connect();
    OptionalPendingResult<GoogleSignInResult> opr = Auth.GoogleSignInApi.silentSignIn(mGoogleApiClient);
    if (opr.isDone()) {
        // If the user's cached credentials are valid, the OptionalPendingResult will be "done"
        // and the GoogleSignInResult will be available instantly.
        Log.d(TAG, "Got cached sign-in");
        // GoogleSignInResult result = opr.get();
        // handleSignInResult(result);
    } else {
        // If the user has not previously signed in on this device or the sign-in has expired,
        // this asynchronous branch will attempt to sign in the user silently.  Cross-device
        // single sign-on will occur in this branch.

        opr.setResultCallback(new ResultCallback<GoogleSignInResult>() {
            @Override
            public void onResult(GoogleSignInResult googleSignInResult) {

                handleSignInResult(googleSignInResult);
            }
        });
    }

раздел onStop

protected void onStop() {
    super.onStop();
    if (mGoogleApiClient.isConnected()) {
        mGoogleApiClient.disconnect();
    }
}

onHandleSignInResult

private void handleSignInResult(GoogleSignInResult result) {
    Log.e(TAG, "handleSignInResult:" + result.isSuccess());
    if (result.isSuccess()) {
        // Signed in successfully, show authenticated UI.
        final GoogleSignInAccount acct = result.getSignInAccount();
        Log.e(TAG, acct.getDisplayName());

    }
}