Android listpreference not showing default value

I'm trying to show the default value of a ListPreference in my Preferencescreen, but it is not working, I don't know what I'm missing here, and here is what I tried so far:

  pData = (ListPreference) findPreference("prefData");

            pData.setLayoutResource(R.layout.pref_data);

            pData.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {

                // @Override
                public boolean onPreferenceChange(Preference preference,
                                                  Object newValue) {
                    SharedPreferences customSharedPreference = getSharedPreferences("prefData", Activity.MODE_PRIVATE);
                    SharedPreferences.Editor editor = customSharedPreference.edit();
                    editor.putString("listentries", (String) newValue);
                    editor.commit();

                    SecurePreferences mSessao = new SecurePreferences(getApplicationContext(), "sessao");
                    mSessao.put("filtro_pedidos_data", (String) newValue);

                    TextView textValue = (TextView) findViewById(R.id.escolhaData);

                    int index = pData.findIndexOfValue(newValue.toString());


                    if (index != -1) {
                        textValue.setText(pData.getEntries()[index]);
                    }

                    System.out.println("Escolheu >>> " + mSessao.getString("filtro_pedidos_data"));

                    return true;
                }
            });

XML:

<ListPreference


    android:dialogTitle="@string/fDataTitulo"
    android:summary="@string/fDataSummary"
    android:key="prefData"
    android:entries="@array/listentries"
    android:entryValues="@array/listvalues"
    android:defaultValue="Mais Antiga"/>

String-array:

<string-array name="listentries">

        <item>Mais Recente</item>
        <item>Mais Antiga</item>

    </string-array>

    <string-array name="listvalues">
        <item>Mais Recente</item>
        <item>Mais Antiga</item>

    </string-array>

Pref_data_xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://ift.tt/nIICcg"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:weightSum="2"
        android:gravity="center"
        android:paddingTop="10dp"
        android:paddingBottom="10dp">


        <TextView
            android:id="@+id/filtrarData"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:text="Refinar Data"
            android:textColor="@color/black"
            android:textSize="@dimen/detalhe_cliente"
            android:entries="@array/listentries"
            android:entryValues="@array/listvalues"
            android:layout_weight="1"
            android:padding="10dp"
            android:gravity="left" />

        <TextView
            android:id="@+id/escolhaData"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:text=""
            android:textColor="@color/blue_dark"
            android:textSize="@dimen/detalhe_cliente"
            android:entries="@array/listentries"
            android:entryValues="@array/listvalues"
            android:layout_weight="1"
            android:padding="10dp"
            android:gravity="right" />





    </LinearLayout>



</LinearLayout>