hcp-pad/mmse/src/main/res/drawable/selector_questions_radio.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" tools:ignore="ResourceName">
    <item android:drawable="@drawable/bg_selected_item" android:state_checked="true" />
    <item android:drawable="@drawable/bg_selected_item" android:state_selected="true" />
    <item android:drawable="@drawable/bg_unselected_item" />
</selector>