xml

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

    <item android:state_checked="true" android:drawable="@drawable/ic_monitor_true"/>
    <item android:state_checked="false" android:drawable="@drawable/ic_monitor"/>
    <item android:drawable="@drawable/ic_monitor"/>

</selector>