Question

My question is very simple.
How do I center the text on a button in android?
I tried to set padding to 0, gravity to center but the result when i run it still that the text is horizontal centred but not vertical. The text is a bit shifted to the bottom.

<Button
    android:id="@+id/btnSame"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:layout_marginBottom="10dip"
    android:layout_marginLeft="10dip"
    android:layout_marginRight="10dip"
    android:background="@drawable/layout_button_different"
    android:gravity="center_vertical|center_horizontal"
    android:height="30dp"
    android:padding="0dip"
    android:text="@string/equals"
    android:textColor="@drawable/layout_button_different"
    android:textSize="50dp"
    android:width="70dp" />

My be also relevant:
In activity I do this:

btnEquals.setCompoundDrawablesWithIntrinsicBounds(null,getResources().getDrawable(R.drawable.up2), null, null);
btnEquals.setPadding(0, 5, 0, 0);
btnEquals.setTextSize(15);

This works but after this I set this:

btnEquals.setCompoundDrawables(null, null, null, null);
btnEquals.setPadding(0, 0, 0, 0);

Result is a bad vertical alignment.

Answer 1

Your existing layout cannot hope to center the text due to the sizes you have selected. You’ve set the button height to 30dp and your textSize is 50dp, and for whatever reason, Android is unable to deal with that and center the text. If you make your button larger or your text smaller you’ll see that the centering works.