<?xml version="1.0" encoding="utf-8"?>   
<selector xmlns:android="http://schemas.android.com/apk/res/android">   
    <item   
    android:state_checked="false"   
    android:drawable="@drawable/jm_agree" />   
    <item   
    android:state_checked="true"   
    android:drawable="@drawable/jm_agree_on" />   
</selector>