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