firebaseAuth.getCurrentUser() return null DisplayName

Question

When I signIn with my google account and get the name with the getDisplayName(), my name appear correctly, but in the AuthStateListener doesn't.

here part of my code:

private void handleSignInResult(GoogleSignInResult result) {

    Alert.dismissProgress();

    if (result.isSuccess()) {
        GoogleSignInAccount acct = result.getSignInAccount();

        if(acct != null) {
            Log.i("NAME", acct.getDisplayName()); <-- RETURN MY NAME CORRECTLY
            credential = GoogleAuthProvider.getCredential(acct.getIdToken(), null);
            fuser.linkWithCredential(credential).addOnCompleteListener(authResult);                    
        } else {
            //ERROR
        }

    } else {
        //ERROR
    }
}

But in my AuthStateListener

@Override
    public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
        FirebaseUser nuser = firebaseAuth.getCurrentUser();

        if (nuser != null) {

            Log.i("NAME", nuser.getDisplayName()); <--- RETURN NULL 
        }
    }

Somebody know why this can happen?

Solution 1

This is a tricky one since it is not so clear in the documentation...

Check the getProviderData()

as defined here: https://firebase.google.com/docs/reference/android/com/google/firebase/auth/FirebaseUser#public-method-summary

You can iterate that List and it will have all the providers associated with that account, included a provider with the providerId = "google.com" with a display Name = YOUR_GOOGLE_USERNAME

let me know if you cannot make it work

Solution 2

Just to add to Ymmanuel's answer (Thank you!) with some example code for anyone else looking for a quick copy and paste:

FirebaseUser user = firebaseAuth.getCurrentUser();
if (user != null) {
    // User is signed in              
    String displayName = user.getDisplayName();
    Uri profileUri = user.getPhotoUrl();

    // If the above were null, iterate the provider data
    // and set with the first non null data
    for (UserInfo userInfo : user.getProviderData()) {
        if (displayName == null && userInfo.getDisplayName() != null) {
            displayName = userInfo.getDisplayName();
        }
        if (profileUri == null && userInfo.getPhotoUrl() != null) {
            profileUri = userInfo.getPhotoUrl();
        }
    }

    accountNameTextView.setText(displayName);
    emailTextView.setText(user.getEmail());
    if (profileUri != null) {
        Glide.with(this)
                .load(profileUri)
                .fitCenter()
                .into(userProfilePicture);
    }
}

The above will try to use the first display name and photo url from the providers if it wasn't initially found in the User object.

Bonus: Using glide for images: https://github.com/bumptech/glide .

Solution 3

Edmund Johnson is right. This issue was introduced in Firebase Auth 9.8.0. A workaround includes downgrading to 9.6.1 or forcing 're-login' as the info is populated after the user logs out and logs back in. The problem is described in the Firebase issue

It has been reported as a bug to Firebase by one of the Firebase UI contributors - Alex Saveau.

Solution 4

I had the same issue, I solved it by signing out the user and resigning them back in.

Call FirebaseAuth.getInstance().signOut(); to sign them out, then try again. As I've discovered, this issue is common with using email/password authentication and Social login (Facebook in my case) at the same time.

Solution 5

I found a solution for this problem, in the Firebase documentation! The solution is to update the user profile using the: UserProfileChangeRequest:

UserProfileChangeRequest profileUpdates = new UserProfileChangeRequest.Builder()
                      .setDisplayName(mUser.getName())
                      .setPhotoUri(Uri.parse("https://example.com/mario-h-user/profile.jpg"))
                      .build();

            firebaseUser.updateProfile(profileUpdates)
                      .addOnCompleteListener(new OnCompleteListener<Void>() {
                          @Override
                          public void onComplete(@NonNull Task<Void> task) {
                              if (task.isSuccessful()) {
                                  Log.d(TAG, "User profile updated.");
                              }
                          }
                      });

The variable mUser is already filled with the content from the fields. I used this piece of code inside the FirebaseAuth.AuthStateListener() -> onAuthStateChanged()

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Comments

[Admin]

Thanks! getProviderData() return me 2 users informations, so I can select the google.com info, but still weird that if I link the new user it should show me just the new user and not both... but still works ;)

[Ymmanuel]

Yea i've noticed a couple of firebase weird stuff.....like for example in iOS the anonymous key returns anonymous = true with custom authentication and with anonymous authentication while in android custom = false and anonymous = true