Firebase Android: Google Sign In Failure

8
votes

First of all, I have to say I'm very very new to Android development so forgive me if I overlook something obvious.

For a university project, I have to create an app that first authenticates users via their Google Account using Firebase. I first followed the instructions I found here.

For a start, I copy pasted this code from Firebase Tutorial. Everything seems to be working, except for one thing :

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    Log.d(TAG, "------------------ onActivityResult ------------------");
    super.onActivityResult(requestCode, resultCode, data);

    // Result returned from launching the Intent from GoogleSignInApi.getSignInIntent(...);
    if (requestCode == RC_SIGN_IN) {
        GoogleSignInResult result = Auth.GoogleSignInApi.getSignInResultFromIntent(data);
        if (result.isSuccess()) {
            Log.d(TAG, "------------------ googleSignInSuccess ------------------");
            // Google Sign In was successful, authenticate with Firebase
            GoogleSignInAccount account = result.getSignInAccount();
            firebaseAuthWithGoogle(account);
            // Start menu activity once the user has been logged in
            Intent intent = new Intent(this, MenuActivity.class);
            startActivity(intent);
        } else {
            Log.d(TAG, "------------------ googleSignInFailure ------------------");
            // Google Sign In failed, update UI appropriately
            // [START_EXCLUDE]
            //Log.d(TAG, result.getStatus().getStatusMessage());
            updateUI(null);
            // [END_EXCLUDE]
        }
    }
}

Here, result.isSuccess() == false. So I think the Google authentication fails for some reason I cannot understand. I am sure I entered the right password, I also enabled Google Account authentication in my app's Firebase Console.

Thank you very much in advance if you can help me.

EDIT : To be more precise, the first time I run the program on my emulator (or after each time I wipe data from it), I have to enter my Google credentials in the dedicated Google login activity that pops up. This works fine and the same activity seems to successfully authenticate me. However after that, result.isSuccess() is still false and I don't understand why.

3
androidfirebasefirebase-authenticationgoogle-authentication
Would be helpful to analyse the problem if you can provide the other part of the code - silverFoxA
Which part do you mean ? - Scrashdown
How you are making the client request - silverFoxA
i had the same problem, i had not given the SHA certs for the app, it's a vital step you can do it like this. developers.google.com/android/guides/client-auth - Mightian

3 Answers

12
votes

I finally found the problem, I made a mistake while authenticating my app in the Firebase Console here (section "before you begin"), 4th step. I entered the debug one instead and it works now.

Thanks nonetheless!

2
votes

You can check status of the result with result.getStatus().getStatusMessage(). Log this message or debug your result Status and it should indicate issue. Status has also getResolution() method that provides pending intent that should resolve your failure (firstly check if resolution is available with calling hasResolution(), which returns true if it can handle it for you).

1
votes

Try changing GSO by :

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

Hope this helps !