firebase authentication - Why do I get com.google.android.gms.common.api.ApiException: 10:?

Question

private void handleSignInResult(Task<GoogleSignInAccount> completedTask) {
    try {
        GoogleSignInAccount account = completedTask.getResult(ApiException.class); //exception is here

        // Signed in successfully, show authenticated UI.
        System.out.println("google token ---> " + account.getIdToken());
    } catch (ApiException e) {
        // The ApiException status code indicates the detailed failure reason.
        // Please refer to the GoogleSignInStatusCodes class reference for more information about this error.
        e.printStackTrace();
    }
}

Answer 1

Quoting the documentation:

Certain Google Play services (such as Google Sign-in and App Invites) require you to provide the SHA-1 of your signing certificate so we can create an OAuth2 client and API key for your app.

If you are using Firebase and try on the debug app :

1. First, get your SHA-1 debug key :

1. Click on Gradle (From Right Side Panel, you will see Gradle Bar)
2. Click on Tasks
3. Click on Android
4. Double Click on signingReport (You will get SHA-1 and MD5)

2. Add new credentials to API Console

1. Go here https://console.developers.google.com/apis/credentials
2. Create new OAuth Client ID
3. Name : Android client (for debug) (example)
4. Signing-certificate fingerprint : Copy paste you SHA-1 debug key
5. Put your package name then saved

3. Add your key to your Firebase project :

1. Go to Project settings -> SHA certificate fingerprints -> Add SHA-1 key of debug app.

2. Then you can update your google-services.json file in your Android project.

It's works for me.