Google login uses same account everytime users login

Question

I use OAuth to let users sign in to the android app via Google account. When the user taps the Google login button for the first time, it produces a dialog to choose the acc

Answer 1

Those who needs it in kotlin, this worked for me, I do clear current login cache before a new login request is made

/**
 * signInGoogle
 */

private fun signInGoogle() = launch{

    //init google sigin
    val gso = GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
                .requestIdToken(GOOGLE_WEBCLIENT_ID)
                .requestEmail()
                .build()



    val gApiClient = GoogleApiClient.Builder(activity)
            .addApi(Auth.GOOGLE_SIGN_IN_API,gso)
            .build()

    val c = gApiClient.blockingConnect()

     if(c.isSuccess && gApiClient.isConnected){
         gApiClient.clearDefaultAccountAndReconnect().await()
     }

    val mGoogleSignInClient = GoogleSignIn.getClient(activity, gso)
    val signInIntent = mGoogleSignInClient.signInIntent

    //start activit
    startActivityForResult(signInIntent, GOOGLE_SIGNIN)

}//end request google login

You can view the full source here : https://github.com/transcodium/TNSMoney-Android/blob/master/app/src/main/java/com/transcodium/tnsmoney/SocialLoginActivity.kt

Answer 2

Simplely workout for me

1>Activity implements GoogleApiClient.OnConnectionFailedListener {

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

3>In OnButtonClicked

Intent signInIntent = Auth.GoogleSignInApi.getSignInIntent(mGoogleApiClient);
                startActivityForResult(signInIntent, 2);

4>

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == 2) {
            GoogleSignInResult result = Auth.GoogleSignInApi.getSignInResultFromIntent(data);
            if (result.isSuccess()) {
                GoogleSignInAccount acct = result.getSignInAccount();
                if(acct!=null) {            
                    //Take all data You Want
                    String identifier = acct.getId()+"";                 
                    String displayName = acct.getDisplayName()+"";
                    //After You got your data add this to clear the priviously selected mail
                    mGoogleApiClient.clearDefaultAccountAndReconnect();
                }
            }else Log.e("handleSignInResult","Failed ; "+result.getStatus());
        }
    }

Answer 3

You have to just clear pre-signed in accounts. To do so, add the following as first line under signIn() function: mGoogleSignInClient.signOut();

 private void signIn() {
    // clearing previous signin caches
       mGoogleSignInClient.signOut();

    //getting the google signin intent
    Intent signInIntent = mGoogleSignInClient.getSignInIntent();
    //starting the activity for result
    startActivityForResult(signInIntent, RC_SIGN_IN);
}

Answer 4

Just add mGoogleSignInClient.signOut(); After succesfully handling sign in.

private void handleSignInResult(Task<GoogleSignInAccount> completedTask) {
    try {
        GoogleSignInAccount account = completedTask.getResult(ApiException.class);
        AuthCredential credential = GoogleAuthProvider.getCredential(account.getIdToken(), null);
        mAuth.signInWithCredential(credential).addOnCompleteListener(this, task -> {
            if(task.isSuccessful()) {
                mGoogleSignInClient.signOut();
                updateUI();
            } else {
                Toast.makeText(this, "Something went wrong.", Toast.LENGTH_SHORT).show();
            }
        });
    } catch (ApiException e) {
        Log.w("SignIn Failed", "signInResult:failed code=" + e.getStatusCode());
        updateUI(null);
    }
}

Answer 5

I found this question while searching for a solution using the javascript client, but it might be similar with Android.

signIn({ prompt: 'select_account' })

select_account

The authorization server prompts the user to select a Google account. This allows a user who has multiple accounts to select amongst the multiple accounts that they may have current sessions for.

See https://developers.google.com/identity/sign-in/web/reference#googleauthsigninoptions.

Answer 6

I am using the Firebase Auth UI, and For me the fix was;

AuthUI.getInstance().setIsSmartLockEnabled(false)...

When logging in, and then;

AuthUI.signOut(context)

When Signing out