Android: Default preference value not being set from XML

I have a simple Preferences Activity that I populate via XML, defining the values as array resources.

In the MAIN Activity of the application, I get a handle to this via:

mSharedPrefs = PreferenceManager.getDefaultSharedPreferences(this);

In the XML for the only preference I have, which is a display setting, I have the following XML that defines the ListPreference:

<ListPreference
        android:title="@string/pref_title_sort"
        android:summary="@string/pref_summary_sort"
        android:key="@string/pref_key_sort"
        android:defaultValue="modified"
        android:entries="@array/sort_order"
        android:entryValues="@array/sort_order_values" />

You can see I am trying to set the default value to 'modified', which is a value found in @array/sort_order_values:

<string-array name="sort_order_values">
    <item>modified</item>
    <item>created</item>
    <item>name</item>
</string-array>

However, when the Preferences Activity is launched, none of the items are selected by default.

I've tried adding the following line to my Activity, but it开发者_StackOverflow中文版 did not change anything (where pref_main is the XML file that defines the preferences):

PreferenceManager.setDefaultValues(this, R.xml.pref_main, false);

Any help appreciated!

Paul

Maybe You have just set a wrong value (without corresponding item in the value array) at the first time you run application. Now Android remembers your first choice. Try to manually uninstall app (Menu >> Settings >> Applications >> Manage Applications >> >> Uninstall ). This should help.