<?xml version="1.0" encoding="utf-8"?>
<ExpandableListView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/medialist"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" 
    android:groupIndicator="@android:color/transparent">

</ExpandableListView>