<?xml version="1.0" encoding="utf-8"?>
<selector android:id="@+id/picture_selector" xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:drawable="@drawable/num_oval" android:state_selected="true" />
  <item android:drawable="@drawable/picture_not_selected" android:state_selected="false" />
</selector>