<?xml version="1.0" encoding="UTF-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item 
        android:drawable="@drawable/checkbox_unchecked" 
        android:state_checked="false" 
        android:state_enabled="true"/>
    
    <item 
        android:drawable="@drawable/checkbox_checked" 
        android:state_checked="true" 
        android:state_enabled="true"/>
    
    <item 
        android:drawable="@drawable/checkbox_disable_unchecked" 
        android:state_checked="false" 
        android:state_enabled="false"/>
    
    <item 
        android:drawable="@drawable/checkbox_disable_checked" 
        android:state_checked="true" 
        android:state_enabled="false"/>

</selector>