Question

Your content must have a ExpandableView whose id is attribute is
‘android.R.list’

This is the error message I am getting from Logcat. Which is confusing me as my XML is this

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">


        <ExpandableListView
                android:id="@+id/list"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"/>

</LinearLayout>

Answer 1

try this

<ExpandableListView   
     android:id="@id/android:list"
     android:layout_width="fill_parent"
     android:layout_height="fill_parent"/>

ExpandableListView

when you define id like this @+id/list means that you define an id name list in your application namespace and you can refer to it by @id/list , but @android:id/list means that you are referring to an id define in the android namespace
This namespace is the namespace of the framework