I've been trying to find a way to move my buttons to the bottom half in my xml file. Currently they are in the top half.

I am trying to follow this solution found here, but I am afraid that it is inapplicable.
Put buttons at bottom of screen with LinearLayout?
My buttons.xml is:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:id="@+id/layout"
              android:orientation="vertical"
              android:layout_width="fill_parent"
              android:layout_height="fill_parent"
              android:weightSum="1">
    <TableLayout android:id="@+id/tableLayout1"
                 android:layout_height="wrap_content"
                 android:layout_width="fill_parent" />
    <Button
        android:id="@+id/block_button"
        style="?android:attr/borderlessButtonStyle"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="right|center_vertical"
        android:layout_weight="0.09"
        android:background="#ff5ac3ff"
        android:drawableLeft="@drawable/ic_action"
        android:gravity="center_horizontal|center_vertical"
        android:text="@string/block_apps"
        android:textSize="22sp" />
    <Button
        android:id="@+id/security_settings_button"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#ff5ac3ff"
        style="?android:attr/borderlessButtonStyle"
        android:layout_weight="0.09"
        android:drawableLeft="@drawable/ic_settings"
        android:gravity="center_horizontal|center_vertical"
        android:text="@string/security_settings"
        android:textSize="22sp"/>
    <Button
        android:id="@+id/blacklist_whitelist_button"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#ff5ac3ff"
        style="?android:attr/borderlessButtonStyle"
        android:drawableLeft="@drawable/ic_blacklist_red"
        android:gravity="center_horizontal|center_vertical"
        android:text="@string/blacklist_whitelist"
        android:textSize="22sp"
        android:layout_weight="0.09"/>
</LinearLayout>
 
     
     
     
    