Selecting subcategories using ListActivity of PreferenceActivity

Question

I am using PreferenceActivity to save some default values.

I have an array that contains the list of Regions and each region SubArray that contains list of different areas. My Preference List item contains list of all regions but How can I make the listPrefernce show another ListPreference on click so it will list its subAreas?

Answer 1

It sounds like you want to use a subscreen described at http://developer.android.com/guide/topics/ui/settings.html#Subscreens

<PreferenceScreen  xmlns:android="http://schemas.android.com/apk/res/android">
    <!-- opens a subscreen of settings -->
    <PreferenceScreen
        android:key="region1"
        android:title="Region 1"
        android:persistent="false">

        <ListPreference
            android:key="subarray1"
            android:title="SubArray 1" ... />

        <ListPreference
            android:key="subarray2"
            android:title="SubArray 2" ... />
        ....

    </PreferenceScreen>

    <!-- opens another subscreen of settings -->
    <PreferenceScreen
        android:key="region2"
        android:title="Region 2"
        android:persistent="false">

        <ListPreference
            android:key="subarray1"
            android:title="SubArray 1" ... />

        <ListPreference
            android:key="subarray2"
            android:title="SubArray 2" ... />
            ...

    </PreferenceScreen>
    ...
</PreferenceScreen>