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

    <item android:state_window_focused="false" android:state_enabled="true" android:state_checked="true" android:drawable="@drawable/btn_check_on_selected" />
    <item android:state_window_focused="false" android:state_enabled="true" android:state_checked="false" android:drawable="@drawable/btn_check_off" />
    
    <item android:state_enabled="true" android:state_checked="true" android:state_pressed="true" android:drawable="@drawable/btn_check_on_pressed" />
    <item android:state_enabled="true" android:state_checked="false" android:state_pressed="true" android:drawable="@drawable/btn_check_off_pressed" />
    
    <item android:state_focused="true" android:state_enabled="true" android:state_checked="true" android:drawable="@drawable/btn_check_on_selected" />
    <item android:state_focused="true" android:state_enabled="true" android:state_checked="false" android:drawable="@drawable/btn_check_off_selected" />
    
    <item android:state_enabled="true" android:state_checked="false" android:drawable="@drawable/btn_check_off" />
    <item android:state_enabled="true" android:state_checked="true" android:drawable="@drawable/btn_check_on_selected" />
</selector>