Theming DialogPreferences

Question

I'm using a theme to customize the look and feel of a settings dialog. The preferences are defined in XML and inflated by a PreferenceFragment. The way of attaching the fragment is basically as described in the developer guide.

It works totally fine customizing the first screen via a custom theme applied to the hosting activity:

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setTheme(R.style.Theme_Preferences_Dialog);
    ...

With the style:

<style name="Theme.Preferences.Dialog" parent="@android:style/Theme.Holo.Light.Dialog">
    <item name="android:colorBackground">#fff0f0f0</item>
    <item name="android:background">#fff0f0f0</item>
    <item name="android:divider">#ffe0e0e0</item>
    <item name="android:textColorPrimary">#ff555555</item>
    <item name="android:textColorSecondary">#ff808080</item>
    <item name="android:textAppearanceLarge">@style/preferences_large_text</item>
    <item name="android:textAppearanceMedium">@style/preferences_medium_text</item>
</style>

And some preferences defined like:

<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
android:title="@string/pref_title" >
...
<ListPreference
    android:enabled="false"
    android:key="@string/pref_change_workspace_key"
    android:persistent="true"
    android:summary="@string/pref_change_workspace_summary_singel"
    android:title="@string/pref_change_workspace_title" />
...
</PreferenceScreen>

The trouble is that all preferences that are opening up a dialog (like a ListPreference), have a different style than the rest of the dialog.

The first level of the settings fragment looks ok:

But clicking on one of the elements produces the wrong result:

Answer 1

The problem seen above results from the line

<item name="android:background">#fff0f0f0</item>

in the defined style. Apparently this setting is used for the spawned dialog as well. Deleting this line yields the expected result.