I have successfully deployed tutorial code from https://firebase.google.com/docs/auth/android/facebook-login for integrating Firebase Auth logins with Facebook. The users successfully created in Firebase Auth console.
However, I noticed that the Email field in the user object is empty (—). Strangely, I successfully retrieved the email information directly from provider result objects using GraphRequest using the acquired token.
Based on the documentation I read (https://firebase.google.com/docs/reference/android/com/google/firebase/auth/FirebaseUser.html#getEmail()), the email field should be populated from login providers.
Some additional strange behaviour:
- After successful login, the onAuthStateChanged is called twice. The value of firebaseAuth.getCurrentUser().getProviderId() is Firebase on both occasion
- I try to list down the providers from the FirebaseUser object, user.getProviderData(). I got two providers: firebase and facebook.com
- When I tried to update email using FirebaseUser.updateEmail(event.getEmail()), I got this error: An internal error has occurred. [ EMAIL_EXISTS ]
Is there something I miss or did I do something wrong?
Here's my code:
public class LoginActivity extends AppCompatActivity {
private static final String TAG = "LOGIN_ACTIVITY";
private static final int RC_SIGN_IN = 777;
private EventBus eventBus;
private SweetAlertDialog pDialog;
private FirebaseAuth mAuth;
private FirebaseAuth.AuthStateListener mAuthListener;
private CallbackManager mCallbackManager;
private ImageView mPasswordVisibilityView;
private TextView txtPassword;
private boolean justEnteredAuthStateChanged = false;
private GoogleApiClient mGoogleApiClient;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
FacebookSdk.sdkInitialize(getApplicationContext());
setContentView(R.layout.login);
// Firebase
mAuth = FirebaseAuth.getInstance();
mAuthListener = new FirebaseAuth.AuthStateListener() {
@Override
public void onAuthStateChanged(@NonNull final FirebaseAuth firebaseAuth) {
final FirebaseUser user = firebaseAuth.getCurrentUser();
if (user != null) {
// User is signed in
Util.logassert("Auth Provider = " + firebaseAuth.getCurrentUser().getProviderId()); // this is called twice, values of Provider = Firebase
Util.logassert("total provider = " + user.getProviderData().size()); // output = 2. "Firebase" and "facebook.com"
for (int i = 0; i < user.getProviderData().size(); i++) {
UserInfo info = user.getProviderData().get(i);
Util.logassert(info.getProviderId() + ", email = " + info.getEmail()); // both empty
Util.logassert("current provider = " + info.getProviderId() + " - " + info);
}
} else {
Util.logassert("onAuthStateChanged user logged out");
}
// ...
}
};
mAuth.addAuthStateListener(mAuthListener);
// Firebase Facebook TapAuth
// Initialize Facebook Login button
mCallbackManager = CallbackManager.Factory.create();
LoginManager.getInstance().registerCallback(mCallbackManager, new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
Util.logassert("facebook:onSuccess:" + loginResult);
handleFacebookAccessToken(loginResult.getAccessToken());
Util.logassert("granted = " + loginResult.getRecentlyGrantedPermissions()); // output [email and public_profile]
Util.logassert("denied = " + loginResult.getRecentlyDeniedPermissions());
}
@Override
public void onCancel() {
Util.logassert("facebook:onCancel");
// ...
}
@Override
public void onError(FacebookException error) {
Util.logassert("facebook:onError" + error.getMessage());
// ...
}
});
FancyButton btnFacebook = (FancyButton) findViewById(R.id.btn_facebook_share);
btnFacebook.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
LoginManager.getInstance().logInWithReadPermissions(LoginActivity.this, Arrays.asList("public_profile", "email"));
Util.logassert("try facebook login");
}
});
txtPassword = (EditText) findViewById(R.id.input_password);
}
private void handleFacebookAccessToken(AccessToken token) {
Util.logassert("handleFacebookAccessToken:" + token);
GraphRequest request = GraphRequest.newMeRequest(
token,
new GraphRequest.GraphJSONObjectCallback() {
@Override
public void onCompleted(
JSONObject object,
GraphResponse response) {
// Application code
Log.v("LoginActivity", response.toString());
Util.logassert("graph res = " + response.getRawResponse());
try {
/* successfully output email address from graph request here */
FbGraphEvent event = new FbGraphEvent(response.getJSONObject().getString("email"), response.getJSONObject().getString("name"));
EventBus.getDefault().postSticky(event);
} catch (Exception e) {
Log.e("MomInvoice", "Error in parsing json fb graph", e);
}
}
});
Bundle parameters = new Bundle();
parameters.putString("fields", "email,name");
request.setParameters(parameters);
request.executeAsync();
AuthCredential credential = FacebookAuthProvider.getCredential(token.getToken());
mAuth.signInWithCredential(credential)
.addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
Util.logassert("signInWithCredential:onComplete:" + task.isSuccessful());
if (!task.isSuccessful()) {
Util.logassert("signInWithCredential failed coz = " + task.getException().getMessage());
Toast.makeText(LoginActivity.this, "Authentication failed :(",
Toast.LENGTH_SHORT).show();
}
}
});
}
@Override
public void onStart() {
super.onStart();
Util.logassert("masuk onStart LoginActivity");
}
@Override
protected void onStop() {
super.onStop();
}
@Override
protected void onDestroy() {
if (mAuthListener != null) {
mAuth.removeAuthStateListener(mAuthListener);
}
super.onDestroy();
}
@Override
protected void onNewIntent(Intent intent) {
super.onNewIntent(intent);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (mCallbackManager != null) {
mCallbackManager.onActivityResult(requestCode, resultCode, data);
Util.logassert("hasilx " + requestCode + " = " + resultCode);
}
}
}
