Como posso detectar se o usuário pela primeira vez no Firebase [duplicado]
Esta pergunta já tem uma resposta aqui:
Verifique se o usuário está autenticado pela primeira vez no Firebase Google Authentication no Android 7 respostasPreciso verificar se o usuário está entrando pela primeira vez e inicializar sua conta com propriedades extras (pontos, associação, etc.), se verdadeira.
O usuário pode alterar o dispositivo e deseja fazer login novamente em outro dispositivo.
Estou usando o método de login do google. Eu tentei algo assim.
if(FirebaseAuth.getInstance().getCurrentUser() != null){
Toast.makeText(Anamain.this, "Welcome again xyz", Toast.LENGTH_SHORT).show();
}
Faço login com uma nova conta, então pela primeira vez neste aplicativo, mas é exibida a mensagem "Bem-vindo novamente xyz".
Como posso detectar se o usuário existe no banco de dados antes?
Código completo
package com.mertg.testsignin;
import android.content.Intent;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
import com.google.android.gms.auth.api.Auth;
import com.google.android.gms.auth.api.signin.GoogleSignIn;
import com.google.android.gms.auth.api.signin.GoogleSignInAccount;
import com.google.android.gms.auth.api.signin.GoogleSignInClient;
import com.google.android.gms.auth.api.signin.GoogleSignInOptions;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.SignInButton;
import com.google.android.gms.common.api.ApiException;
import com.google.android.gms.common.api.CommonStatusCodes;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.common.api.GoogleApiClient.ConnectionCallbacks;
import com.google.android.gms.common.api.GoogleApiClient.OnConnectionFailedListener;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthCredential;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.auth.GoogleAuthProvider;
import com.google.firebase.database.FirebaseDatabase;
public class Anamain extends AppCompatActivity {
private String TAG = "Anamain";
private SignInButton signIn;
GoogleSignInClient mGoogleSignInClient;
private int RC_SIGN_IN = 1;
private FirebaseAuth mAuth;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_anamain);
signIn = (SignInButton)findViewById(R.id.googleBtn);
mAuth = FirebaseAuth.getInstance();
// Configure sign-in to request the user's ID, email address, and basic
// profile. ID and basic profile are included in DEFAULT_SIGN_IN.
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestIdToken(getString(R.string.default_web_client_id))
.requestEmail()
.build();
mGoogleSignInClient = GoogleSignIn.getClient(this, gso);
signIn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
signIn();
}
});
}
private void signIn() {
Intent signInIntent = mGoogleSignInClient.getSignInIntent();
startActivityForResult(signInIntent, RC_SIGN_IN);
}
@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) {
Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(data);
try {
// Google Sign In was successful, authenticate with Firebase
GoogleSignInAccount account = task.getResult(ApiException.class);
firebaseAuthWithGoogle(account);
} catch (ApiException e) {
// Google Sign In failed, update UI appropriately
Log.w(TAG, "Google sign in failed", e);
// ...
}
}
}
private void firebaseAuthWithGoogle(GoogleSignInAccount acct) {
Log.d("TAG", "signInWithCredential:success" + acct.getId());
AuthCredential credential = GoogleAuthProvider.getCredential(acct.getIdToken(), null);
mAuth.signInWithCredential(credential)
.addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
/* if (!task.isSuccessful()){
Log.d("TAG", "signInWithCredential:success");
FirebaseUser user = mAuth.getCurrentUser();
updateUI(user);
}*/
if(FirebaseAuth.getInstance().getCurrentUser() != null){
Toast.makeText(Anamain.this, "Welcome again xyz", Toast.LENGTH_SHORT).show();
}
else {
//Log.w("TAG", "signInWithCredential:failure", task.getException());
// Toast.makeText(Anamain.this, "Basaramadim", Toast.LENGTH_SHORT).show();
//updateUI(null);
Toast.makeText(Anamain.this, "Register Successful", Toast.LENGTH_SHORT).show();
FirebaseUser user = mAuth.getCurrentUser();
//updateUI(user);
}
}
});
}
private void updateUI(FirebaseUser user) {
GoogleSignInAccount acct = GoogleSignIn.getLastSignedInAccount(getApplicationContext());
if(acct != null) {
String personName = acct.getDisplayName();
Toast.makeText(this, "Sen Girdin" + personName, Toast.LENGTH_SHORT).show();
}
}
}
ATUALIZAR
Eu recebo o erro: ';' esperado para esta linha
mAuth.signInWithCredential(credential)
É assim que eu sou substituído.
private void firebaseAuthWithGoogle(GoogleSignInAccount acct) {
Log.d("TAG", "signInWithCredential:success" + acct.getId());
AuthCredential credential = GoogleAuthProvider.getCredential(acct.getIdToken(), null);
mAuth.signInWithCredential(authCredential).addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
boolean isNewUser = task.getResult().getAdditionalUserInfo().isNewUser();
if (isNewUser) {
Log.d(TAG, "Is New User!");
} else {
Log.d(TAG, "Is Old User!");
}
}
});
}