<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_selected="true">
        <layer-list>
            <item android:right="4dp"
                android:top="4dp"
                android:left="4dp"
                android:bottom="4dp">
                <shape
                    android:shape="oval">
                    <solid android:color="?colorAccent" />
                </shape>

            </item>
        </layer-list>
    </item>
    <item android:state_selected="false">
        <shape/>
    </item>
</selector>