(Solved) Firebase Google only connects in apps by 4G, no wifi

Question

I’m developing an app that uses Firebase. I had a lot of problems W/System: Ignoring header X-Firebase-Locale because its value was null. Thinking this is the case I’ve invested a lot of time trying to solve this.

I noticed that it even connects if stay the login screen for 30 seconds it ends up logging in firebase. Very slow.

When I did a 4G test and it worked really well and really fast. I took any other application from my phone as in the case Glotify should use google services, to my surprise also got slow and did not connect.

Again I took the wifi , tried again in this app in question and worked very fast several times. It is not my wifi from home not because I went elsewhere and also did not work.
Good was the same Internet operator A NET.

I’ll even put the code here, but how it works for 4G, and all right. And the other application of a large company (glorify) also does not work on login.

The question comes: It is in google, or in the operator?

     @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate( savedInstanceState );
    setContentView( R.layout.activity_login );
    mAuth = FirebaseAuth.getInstance();
    mAuth.getUid ();
    try {
        if ( mAuth != null ) {
           String  uid = mAuth.getUid ();
        }
    } catch ( Exception e ) {
        e.printStackTrace ( );
    }

    // Configure Google Sign In
    gso = new GoogleSignInOptions.Builder( GoogleSignInOptions.DEFAULT_SIGN_IN)
        .requestIdToken(getString(R.string.default_web_client_id))
        .requestEmail()
        .build();
    // Build a GoogleSignInClient with the options specified by gso.
    mGoogleSignInClient = GoogleSignIn.getClient(this, gso);


    editEmail = findViewById( R.id.email );
    editSenha = findViewById( R.id.password );
    btnCancelarLogin = findViewById (R.id.btnCancelarLogin );
    btnCancelarLogin.setOnClickListener (this);
    btnGoogleConection = findViewById (R.id.btnGoogleConection );
    btnGoogleConection.setOnClickListener (this);
    btnForgotPassword = findViewById (R.id.btnEsqueci_Senha );
    progressDialog = new ProgressDialog( this );

    // Create token receiver (for demo purposes only)
    mTokenReceiver = new TokenBroadcastReceiver() {
        @Override
        public void onNewToken(String token) {
            Log.d( TAG, "onNewToken:" + token );
            setCustomToken( token );
        }
    };

}

private void logarUsuario(){
    final String email = editEmail.getEditText().getText().toString().trim();
    String senha = editSenha.getEditText().getText().toString().trim();

    if (!validateForm()) {
        return;
    }
    try {
        progressDialog.setMessage( getString( R.string.iniciando_login) );
        progressDialog.show();

        //Consultar se leader existe
        mAuth.signInWithEmailAndPassword( email, senha )
                .addOnCompleteListener(LoginActivity.this, new OnCompleteListener <AuthResult> () {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {
                        //checando sucesso
                        if(task.isSuccessful()){
                            int pos = email.indexOf("@");
                            String user = email.substring(0,pos);
                            Toast.makeText( LoginActivity.this, getString( R.string.logado_sucesso),Toast.LENGTH_SHORT).show();
                            FirebaseUser currentUser = mAuth.getCurrentUser();
                            updateUI(currentUser);
                            editEmail.getEditText().setText("");
                            editSenha.getEditText().setText("");
                            Intent home = new Intent( LoginActivity.this, HomeActivity.class );
                            startActivity( home );
                          //  startSignIn();
                        }else{  //se houver colisão de mesmo usuário
                            if (task.getException() instanceof FirebaseAuthUserCollisionException){
                                Toast.makeText( LoginActivity.this, getString( R.string.usuario_existe),Toast.LENGTH_SHORT).show();
                                HomeActivity.Logado = false;
                            }else{
                                Toast.makeText( LoginActivity.this,getString( R.string.falha_login), Toast.LENGTH_LONG ).show();
                                HomeActivity.Logado = false;
                            }

                        }
                        progressDialog.dismiss();
                    }

                } );

    } catch ( Exception e ) {
        e.printStackTrace ( );
    }

}

@Override
public void onClick(View v) {

    int id = v.getId ( );
    if ( id == R.id.btnEnviarLogin ) {
        logarUsuario ( );
    } else if ( id == R.id.btnCancelarLogin ) {
        finishAffinity ( );
    }else if ( id == R.id.btnEsqueci_Senha){
        Intent remember = new Intent( LoginActivity.this, RememberActivity.class );
        startActivity( remember );
    }else if (id == R.id.btnRegistro){
        Intent register= new Intent( LoginActivity.this, RegisterActivity.class );
        startActivity( register );
    }else if(id == R.id.btnGoogleConection){
        signIn();
    }
}

    public static void updateUI(FirebaseUser user){
    if (user != null) {
        HomeActivity.Logado = true;
        String name = user.getDisplayName();
        String email = user.getEmail();
        Uri photoUrl = user.getPhotoUrl();

        // Check if user's email is verified
        boolean emailVerified = user.isEmailVerified();

        // The user's ID, unique to the Firebase project. Do NOT use this value to
        // authenticate with your backend server, if you have one. Use
        // FirebaseUser.getIdToken() instead.
        String uid = user.getUid();

    } else {
        HomeActivity.Logado = false;
    }
}

//start google conection
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);
            Log.d(TAG, "firebaseAuthWithGoogle:" + account.getId());
            firebaseAuthWithGoogle(account.getIdToken());
        } catch (ApiException e) {
            // Google Sign In failed, update UI appropriately
            Log.w(TAG, "Google sign in failed", e);
            // ...
        }
    }
}
private void firebaseAuthWithGoogle(String idToken) {
    AuthCredential credential = GoogleAuthProvider.getCredential(idToken, null);
    progressDialog.setMessage( getString( R.string.iniciando_login) );
    progressDialog.show();
    mAuth.signInWithCredential(credential)
        .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
            @Override
            public void onComplete(@NonNull Task<AuthResult> task) {
                if (task.isSuccessful()) {
                    // Sign in success, update UI with the signed-in user's information
                    Log.d(TAG, "signInWithCredential:success");
                    FirebaseUser user = mAuth.getCurrentUser();
                    updateUI(user);
                    Intent home = new Intent( LoginActivity.this, HomeActivity.class );
                    progressDialog.dismiss();
                    startActivity( home );

                } else {
                    // If sign in fails, display a message to the user.
                    Log.w(TAG, "signInWithCredential:failure", task.getException());
                    updateUI(null);
                }

                // ...
            }
        });
}
//finish google connection

@Override
public void onStart() {
    super.onStart();
    // Check if user is signed in (non-null) and update UI accordingly.
    FirebaseUser currentUser = mAuth.getCurrentUser();
    updateUI(currentUser);
}

Answer 1

Good going on the English stackoverflow in the post Couldn’t connect to firebase database via WIFI but Connects fine with 4G mobile network. Strange Issue I saw in a reply

The Solution for me was to replace the internet service Provider SIM card as I’m using 4G access point in my home.

So I kept thinking about my case, and I went to another network, connected on wifi and it worked. Then I realized it could be something on my modem. I restarted my modem and my app returned to connect on Firebase on my wifi.

In the other place that also did not work I believe that it should be restarted the modem from there too. (Obs. remembered that the net of them sometimes hangs).

I do not know why this error in the modem, but for me it solved.

Restart the Modem worked!

For those who have denied my question a hug.

Answer 2

Firstly, there is nothing wrong with your question. I came across the same problem as you using Firebase Realtime Database and Firebaseuth. In my case it did not work with the network 4g , with the wi-fi yes , and when used with the 4g and a VPN, too. In my opinion , it is a problem of Firebase itself with the configuration of some types of routers , which would explain this behavior. When using a VPN , the connection goes through other servers , using other routers , and occurs naturally. Basically, there is nothing that can be done in the application code to circumvent this type of behavior in Firebase.