How to Create Dynamic Array For ListPreference From Java Side.
I Don't use Below Xml .
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string-array name="listArray">
 <item>Value 1</item>
 <item>Value 2</item>
<item>Value 3</item>
</string-array>
<string-array name="listValues">
 <item>1</item>
 <item>2</item>
 <item>3</item>
</string-array>
</resources>
                Place preferences.xml in res/xml
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
    <PreferenceCategory android:title="Some title">     
        <ListPreference android:key="default_category"
            android:title="Dynamic categories" android:summary="Dynamic categories summary"
            android:defaultValue="0" />
    </PreferenceCategory>
</PreferenceScreen>
In your activity that extends PreferenceActivity you do something like this in onCreate().
ListPreference listPreferenceCategory = (ListPreference) findPreference("default_category");
if (listPreferenceCategory != null) {
    ArrayList<Category> categoryList = getCategories();
    CharSequence entries[] = new String[categoryList.size()];
    CharSequence entryValues[] = new String[categoryList.size()];
    int i = 0;
    for (Category category : categoryList) {
        entries[i] = category.getCategoryName();
        entryValues[i] = Integer.toString(i);
        i++;
    }
    listPreferenceCategory.setEntries(entries);
    listPreferenceCategory.setEntryValues(entryValues);
}
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