Android Listview RuntimeException - Your content must have a ListView whose id attribute is android.R.id.list

"Your content must have a listview whose id is android.r.id.list"

Just make sure your listview's id is @android:id/list.

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