tab_indicator_shape.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<!-- tab indicator dot style using the ring shape, design as you wish-->
    <item>
        <shape
            android:innerRadius="0dp"
            android:shape="ring"
            android:thickness="10dp"
            android:useLevel="false">
            <solid android:color="#000000"/>
            <size android:height="30dp" android:width="30dp"/>
        </shape>
    </item>
</layer-list>