ExpandableList getChildView running twice per child
<p>I've got and <code>ExpandableList</code> which I assign to an extended <code>BaseExpandableListAdapter</code>. In here, I implement the <code>getChildView</code> method to setup and return a View for each child:</p>

<pre><code>public View getChildView(int groupIndex, int childIndex, boolean isLastChild, View convertView, ViewGroup parent) {

    LinearLayout layout;
    if (convertView == null) {
            layout = (LinearLayout) LayoutInflater.from(MyApp.getContext()).inflate(R.layout.rooms_room_list_row, parent, false);
        } else {
            layout = (LinearLayout) convertView; 
        }

    // Do some custom stuff with views on the layout
    ...

    return layout;

}
</code></pre>

<p>While debugging, I've noticed that <code>getChildView</code> is executed twice per child. All the values passed in (i.e, groupIndex, childIndex, isLastChild) are the same... so in group 3, if I've got two children, I'll see:</p>

<p><code>groupIndex = 3</code>, <code>childIndex = 0</code></p>

<p>then </p>

<p><code>groupIndex = 3</code>, <code>childIndex = 1</code></p>

<p>then it repeats:</p>

<p><code>groupIndex = 3</code>, <code>childIndex = 0</code></p>

<p>and finally:</p>

<p><code>groupIndex = 3</code>, <code>childIndex = 1</code></p>

<p>My view appears fine, i.e, there are only two children listed for the group, but why is it doing all the extra work?</p>

<p><strong>UPDATE &amp; ANSWER</strong></p>

<p>It seems that if the the listview is set to a height of <code>wrap_content</code> then the <code>getChildView</code> will be called twice per child. Changing the height to <code>fill_parent</code> seems to fix this behavior.</p>
