<ListPreference
            android:defaultValue="1"
            android:entries="@array/LoadDataArray"
            android:entryValues="@array/LoadDataValues"
            android:key="SourceData"
            android:summary="@string/SourceData_summary"
            android:title="@string/SourceData" />

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <string-array name="LoadDataArray">
        <item>FTP-сервер</item>
        <item>SD-карта</item>
    </string-array>
    <string-array name="LoadDataValues">
        <item>1</item>
        <item>2</item>
    </string-array>

</resources>

SharedPreferences mSettings = PreferenceManager.getDefaultSharedPreferences(this);
int a = mSettings.getInt("LoadDataValues", 1);