Google Sign In Failed - Firebase

Question

I followed this tutorial and in this part of the code:

@Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        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()) {
                // Google Sign In was successful, authenticate with Firebase
                GoogleSignInAccount account = result.getSignInAccount();
                firebaseAuthWithGoogle(account);
            } else {
                // Google Sign In failed
                Log.e(TAG, "Google Sign In failed.");
                Toast.makeText(SignInActivity.this,"Google Sign In Failed.",Toast.LENGTH_SHORT).show();
            }
        }
    }

I am getting a google sign in failed. I do not know what is wrong how to fix?

I actually got in working when I tried running app-released.apk instead of running in directly on my phone.

Answer 1

Perhaps you messed up/haven't configured your debug certificate (might happen if you switch to another development machine with different keystore set). Make sure you have added the SHA1 certificate fingerprint in the Firebase Console Settings section of your project, as described here: https://firebase.google.com/docs/auth/android/google-signin#before_you_begin

Answer 2

Google sign-in is automatically configured on your connected iOS and web apps. To set up Google sign-in for your Android apps, you need to add the SHA1 fingerprint for each app on your Project Settings.

See this page for information on using keytool to get the SHA hash of your signing certificate

https://developers.google.com/android/guides/client-auth

Go to Project - Settings - General to add the fingerprint.

To get the SHA1 debug fingerprint (if you are debugging you only need this one):

keytool.exe -list -alias androiddebugkey -keystore C:\Users\<username>\.android\debug.keystore -storepass android -keypass android

To get the SHA1 release fingerprint:

keytool -exportcert -list -v -alias <MYKEYNAME> -keystore C:\mykeylocation\keystore.jks