RelativeLayout gravity center not working

I answered a similar issue involving three views without using nested ViewGroups.

https://stackoverflow.com/a/13279846/1011746

This is tested in API 11.

For the two view horizontal case:

<RelativeLayout
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  android:gravity="center"
  android:background="@android:color/black"
  >
  <Button
    android:id="@+id/apply"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:text="APPLY"
    android:textSize="20sp"
    />
  <Button
    android:id="@+id/undo"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:text="UNDO"
    android:textSize="20sp"
    android:layout_toRightOf="@id/apply"
    />
</RelativeLayout>

For the two view vertical case:

<RelativeLayout
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  android:gravity="center"
  android:background="@android:color/black"
  >
  <Button
    android:id="@+id/apply"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:text="APPLY"
    android:textSize="20sp"
    />
  <Button
    android:id="@+id/undo"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:text="UNDO"
    android:textSize="20sp"
    android:layout_below="@id/apply"
    />
</RelativeLayout>

You'll need to nest several layouts together. To center something in a RelativeLayout, you use android:layout_centerInParent="true" on the child. If you try to center several childs, they'll end up under/over each other.

Therefore, for example, you could use a LinearLayout with two views as a child to the RelativeLayout, with the LinearLayout having android:orientation="horizontal" and android:layout_centerInParent="true". The LinearLayout should now be centered in the RelativeLayout, with the two children next to each other.

So my fix for this issue turn out just to leverage the compound drawable feature of textview. I just trashed the button and used drawableRight to show the search icon.

Wrap the two views in a LinearLayout and then center the LinearLayout in the RelativeLayout like you did for the single TextView.