How to draw a dot circle inside a square drawable in android? -

i want small dot inside square button , have tried till answered azizbekian:

<?xml version="1.0" encoding="utf-8"?> <layer-list xmlns:android="http://schemas.android.com/apk/res/android">      <item>         <shape android:shape="rectangle">             <size android:width="100dp" android:height="100dp"/>             <solid android:color="#38b0ef"/>         </shape>     </item>      <item         android:bottom="45dp"         android:left="45dp"         android:right="45dp"         android:top="45dp">         <shape android:shape="oval">             <stroke android:width="1dp"  android:color="#0c5069"/>             <size android:width="20dp" android:height="20dp"/>             <solid android:color="#0c5069"/>         </shape>     </item>   </layer-list> 

the first image have tried , second image want excluding text.

and code button have apply drawable there 7 such buttons in horizontal linearlayout weightsum:100 each button has weight 14

<button    android:id="@+id/wed"    android:layout_width="0dp"    android:layout_height="35dp"    android:layout_marginend="1dp"    android:background="@drawable/my_button_dot"    android:text="wed"    android:textallcaps="true"    android:textstyle="bold"    android:textcolor="#ffffff"    android:layout_weight="15"/> 

the dot not appear in background when drawable applied button, maybe because of size of button , drawable tried adjust size of drawable, not understand , did not work, how can adjust such dot appears in button background.