path: root/app/src/main/res/drawable/black_circle.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item>
    <shape android:shape="oval">
        <solid android:color="@color/black800"/>
        <size android:width="250dp" android:height="250dp"/>
    </shape>
</item>
</selector>