how to change button text to small caps in android studio code example

Example: android studio lower case letters on a button

<Button
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/btnLogin"
            android:text="Login for Chat"
            
            //This is how to maintain lower case letters on android buttons :
           
            android:textAllCaps="false"/>