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

</selector>
