Test Push Firebase

package pro.izcali.testapptojo;

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.EditText;
import android.widget.TextView;
import android.widget.Toast;

import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import pro.izcali.testapptojo.models.Negocios;
import pro.izcali.testapptojo.models.Sucursal;
import pro.izcali.testapptojo.models.User;
import pro.izcali.testapptojo.models.administrador;


public class MainActivity extends AppCompatActivity {
    TextView txNombre, txCorreo, txFecha, txHora;
    EditText edEntrada, edCorreo;
    Button btEnviar;

    private FirebaseAuth mAuth;
    FirebaseDatabase database;
    DatabaseReference myRef, refUsers;
    DataSnapshot datosUsuario, datosAuthor;

    ArrayList<String> negociosDeEmpresario;

    FirebaseUser user2;


    static final String user = "3nf8nf9n9n";
    static final String TAG = "Dummy Firebase";
    final String UID_Empresario = "9OvtbLbnJAQNeMqcJxPEqSiv6842";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        database = FirebaseDatabase.getInstance();
        mAuth = FirebaseAuth.getInstance();

        edEntrada = findViewById(R.id.edInput);
        edCorreo = findViewById(R.id.edCorreo);
        txNombre = findViewById(R.id.txNombre);
        txCorreo = findViewById(R.id.txCorreo);
        txFecha = findViewById(R.id.txFecha);
        txHora = findViewById(R.id.txHora);


        btEnviar = findViewById(R.id.btSave);

        btEnviar.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                enviar();
            }
        });


        myRef = database.getReference("nodousers/");
        refUsers = database.getReference("populares");

        Log.d(TAG, "Ya jalo esta madre!!");
        setFBListener();
    }

    private void enviar() {
       /* String email = edEntrada.getText().toString();
        String pass = edCorreo.getText().toString();

        mAuth.signInWithEmailAndPassword(email, pass)
                .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, "signInWithEmail:success");
                            callMess("Succes");
                        } else {
                            // If sign in fails, display a message to the user.
                            Log.w(TAG, "signInWithEmail:failure", task.getException());
                            callMess("Error");
                        }

                        // ...
                    }
                }); */
        // Write a message to the database

        //myRef.push().setValue(new administrador(edEntrada.getText().toString(), edCorreo.getText().toString(), "ijklm")); //Envio correo
        //String pushhh = myRef.getKey();
        //txFecha.setText(pushhh);

        //Get the current articles in authors, and save it on ArrayList
/*
        ArrayList<String> id_author = new ArrayList<>();
        //refUsers = database.getReference("authors/ijklm/articles");
        Log.d("IDE_PUSH", datosAuthor.getChildrenCount()+"");
        Log.d("IDE_PUSH", datosAuthor.getRef().toString());
        for (DataSnapshot tmp : datosAuthor.getChildren()){
            String idpush = tmp.getKey();
            Log.d("IDE_PUSH", idpush);
            Log.d("IDE_PUSH", datosAuthor.getChildrenCount()+"");
        }*/
        String uid_nuevo = myRef.push().getKey();


        myRef = database.getReference("nodousers/"+uid_nuevo);
        myRef.child("Nombre").setValue(txNombre.getText().toString());
        myRef.child("Correo").setValue(txCorreo.getText().toString());


        String uid_negocio = myRef.push().getKey();

        myRef = database.getReference("nodousers/"+uid_nuevo+"/Negocios/"+uid_negocio);

        myRef.setValue(new Negocios());

        String uid_sucursal;
        myRef = database.getReference("nodousers/"+uid_nuevo+"/Negocios/"+uid_negocio+"/Sucursales");
        for (int i = 0; i < 4; i++) {
            uid_sucursal = myRef.push().getKey();
            myRef.child(uid_sucursal).setValue(new Sucursal());
        }

        myRef = database.getReference("nodousers");

    }

    private void callMess(String s) {
        Toast.makeText(this, s, Toast.LENGTH_LONG).show();
    }

    private void setFBListener(){
        // Read from the database
        myRef.addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(DataSnapshot dataSnapshot) {
                datosUsuario = dataSnapshot;
                //cambiarDatos();
                Log.d(TAG, "Inicia Llenado, ya leyo, yupi!!");
                llenarArrayNegociosPorID();
            }

            @Override
            public void onCancelled(DatabaseError error) {
                // Failed to read value
                Log.w(TAG, "Failed to read value.", error.toException());
            }
        });


    }

    private void llenarArrayNegociosPorID() {
        negociosDeEmpresario = new ArrayList<>();
        Log.d(TAG, "Ahora hara cosas de comparacion y asi !!");
        String neg = "";


        for (DataSnapshot tmp: datosUsuario.getChildren()){

            if(tmp.child("UID_Empresario").getValue(String.class)!=null){

                if (tmp.child("UID_Empresario").getValue(String.class).equals(UID_Empresario)){
                    negociosDeEmpresario.add(tmp.getKey());
                }

            }


        }

        for (String clave:negociosDeEmpresario){

            Toast.makeText(this, clave, Toast.LENGTH_LONG).show();
            Log.d(TAG, clave);
        }

    }

    private void getArticleDate() {
        //administrador obj = datosAuthor.child("ijklm").child("articles").getValue(administrador.class);

        //txNombre.setText(obj.Nombre_A);
        //txCorreo.setText(obj.Correo_A);

    }

    private void cambiarDatos() {
        txNombre.setText(datosUsuario.child("Nombre_A").getValue(String.class));
        txCorreo.setText(datosUsuario.child("Correo_A").getValue(String.class));
        txFecha.setText(datosUsuario.child("Fecha_Registro_A").getValue(String.class));
        txHora.setText(datosUsuario.child("Hora_Registro_A").getValue(String.class));
    }

}