android – How to centralize the entire layout

Question:

I have the following layout:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <Button>

    <TableLayout>android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingLeft="10dp"
        android:paddingRight="10dp"
        android:layout_gravity="center_horizontal">

        (Aqui tem algumas <TableRows>)

    </TableLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:padding="10dp"
        android:orientation="vertical">

        <Button>

    </LinearLayout>
</LinearLayout>

It is necessary to make it all vertically centered, from the first button to the last, keeping them organized as they are. I tried putting android:layout_centerVertical="true" but it doesn't work. What should I do?

Answer:

Try using the android:gravity="center_vertical" parameter in the parent LinearLayout. If you want to adjust each View separately, you can use the android:layout_gravity parameter on the desired View.