Making text vertically centered in a button [duplicate]

Question

I have buttons in RelativeLayout. Height and width are not wrap_content. I noticed that the text in Button is not vertically centered. How can I fix this problem in my code?

<Button
    style="?android:attr/buttonStyleSmall"
    android:layout_width="40dp"
    android:layout_height="40dp"
    android:text="&lt;"
    android:id="@+id/buttonPreviousDay"
    android:layout_alignParentTop="true"
    android:layout_toStartOf="@+id/editTextShowDate"
    android:layout_marginEnd="10dp"
    android:textSize="20dp"
    android:background="@drawable/button_shape"
    android:textStyle="bold" />

Answer 1

you need to set padding

    android:padding="5dp"
    android:gravity="center"
    android:textSize="12sp"