android listview에 layout_height="wrap_content" 를 넣어봤자 소용이 없다.
http://stackoverflow.com/questions/11295080/android-wrap-content-is-not-working-with-listview
You should never set the height of a ListView to wrap_content. Either set the height to fill_parent or do something like this:
<ListView
android:layout_height="0dp"
android:layout_weight="1"
/>
Source: http://www.youtube.com/watch?v=wDBM6wVEO70&t=40m45s
라는데, 이걸로 해결 안되는 것 같다.