What is this error "D/TAG: Return...: [Lcom.example.Gustavo.domanda.Consultarpojo;@11c78941"

Question

I have the following code that should return a data list

package com.example.gustavo.domanda;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.Volley;

import java.util.ArrayList;

public class ConsultarActivity extends AppCompatActivity {

private ListView lvReservas;

private int idusuario;
private String nome;
private String sobrenome;
private RequestQueue mVolleyRequest;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_consultar);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    Bundle extra = getIntent().getExtras();

    if(extra != null){
        idusuario = extra.getInt("idusuario");
        nome = extra.getString("nome");
        sobrenome = extra.getString("sobrenome");
    }

    getAgenda(idusuario);

}

private void getAgenda(int idusuario) {
    int opcao = 3; //mostrar agenda do cliente
    final ArrayList<ConsultarPojo> agendaCliente = new ArrayList<>();
    RequestQueue queue = Volley.newRequestQueue(this);
    GsonRequest<ConsultarPojo[]> request = new GsonRequest<>("http://reservacomdomanda.com/areaAdmin/api/admin_estabelecimento/reqScheduleProJson.php?" +
            "idcliente="+idusuario+"&opcao="+opcao, ConsultarPojo[].class, null, new Response.Listener<ConsultarPojo[]>() {
        @Override
        public void onResponse(ConsultarPojo[] response) {
            Log.d("TAG", "Retorno... " + response);
            for (int i = 0; i < response.length; i++) {
                ConsultarPojo agc = new ConsultarPojo();
                agc.dia = response[i].dia;
                agc.hora = response[i].hora;
                agendaCliente.add(agc);
            }

            ArrayAdapter<ConsultarPojo> adapter = new ArrayAdapter<ConsultarPojo>(ConsultarActivity.this, android.R.layout.simple_list_item_1, agendaCliente);
            lvReservas = ((ListView)findViewById(R.id.lvReservas));
            lvReservas.setAdapter(adapter);
            adapter.notifyDataSetChanged();

        }
    }, new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
            Log.d("Error.Response", String.valueOf(error));
        }
    });
    queue.add(request);
}

}

And on the line where I wrote "TAG", "Return... " + Sponse, on the console appears

D/TAG: Return... [Lcom.example.Gustavo.domanda.Consultarpojo;@f6cde00

What mistake or problem is this?

Answer 1

This is not an error, it is the string that represents the object.

When you use an object of this form, implicit conversion to string, the return of the method is used toString() of that object.

The standard implementation of the method toString() returns a string consisting of the class name, of which the object is an instance, the character @ and the hexadecimal representation of the object hash code, the equivalent of

getClass().getName() + '@' + Integer.toHexString(hashCode());

Answer 2

You are trying to concatenate a direct string ("Return...") into the log with an Object Array (Sponse). It’s no mistake, it just took the "header" that describes the Array. If you want to take a specific item from the Array, use the indexers, and as is Object Array of a class of yours, you have to call the getter or the variable you want to display from the object.

Ex: By your code, I saw that your class ConsultarPojo has a variable dia, then it would look something like this:

Log.d("TAG", "Retorno... " + response[0].dia);