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    <p>I run into this two days ago. Here's my solution:</p> <p>First extend <code>ExpandableListActivity</code> and override the onCreate() method like this:</p> <pre><code>public class ExpandableExample extends ExpandableListActivity { @Override public void onCreate() { super.onCreate(savedInstanceState); setListAdapter(new BaseExpandableListAdapterExample()); } } </code></pre> <p>The definition of <code>BaseExpanableListAdapterExample</code> is (inner class of <code>ExpandableExample</code>):</p> <pre><code>protected class BaseExpandableListAdapterExample extends BaseExpandableListAdapter { } </code></pre> <p>Then you need to implement <code>getChildView</code> and <code>getGroupView</code>. What I did was:</p> <pre><code>public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) { View groupRow = getLayoutInflater().inflate(R.layout.group_row, null); TextView textView = (TextView) groupRow.findViewById(R.id.text_group); textView.setText(getGroup(groupPosition).toString()); return groupRow; } public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) { View childRow = getLayoutInflater().inflate(R.layout.child_row, null); TextView textView = (TextView) childRow.findViewById(R.id.text_child); textView.setText(getChild(groupPosition, childPosition).toString()); return childRow; } </code></pre> <p>Then you need to define both <code>group_row.xml</code> and <code>child_row.xml</code> under <code>/res/layout/</code> directory. For example, my <code>group_row.xml</code> is as follows:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" &gt; &lt;TextView android:id="@+id/text_element" android:layout_width="fill_parent" android:layout_height="48dip" android:textSize="20sp" android:textColor="#fff" android:layout_marginLeft="48dip" android:gravity="center_vertical" /&gt; &lt;/RelativeLayout&gt; </code></pre> <p>Hope it helps. Comment if you have any question.</p>
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    1. COThanks very much. That's great but I need to retrieve content from XML as well. Maybe I should consider parsing my XML manually to data structures suitable to use in SimpleExpandableListAdapter?
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      1. USAlexander Oleynikov
    2. COAleksander, look at http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/view/ExpandableList1.html for an example on how to populate an ExpandableListView manually, without using an Adapter.
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    3. COAre you sure that the link is correct? That code does use a provider. It simply defines it's own one :) But creating own provider which will parse XML data seems to look like a solution.
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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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