AndroidAPS/app/src/main/res/layout/activity_setupwizard.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".startupwizard.SetupWizardActivity">

    <TextView
        android:id="@+id/sw_content"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:keepScreenOn="true"
        android:textColor="#33b5e5"
        android:textSize="20dp"
        android:textStyle="bold" />

    <LinearLayout
        android:id="@+id/sw_content_fields"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:gravity="center_vertical|center_horizontal"
        android:orientation="vertical">

    </LinearLayout>

    <LinearLayout
        android:id="@+id/sw_content_controls"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|center_horizontal"
        android:background="@color/black_overlay"
        android:orientation="horizontal">

        <Button
            android:id="@+id/previous_button"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:onClick="showPreviousPage"
            android:text="@string/setupwizard_previous" />

        <Button
            android:id="@+id/skip_button"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:onClick="showNextPage"
            android:text="@string/setupwizard_skip"
            android:visibility="invisible" />

        <Button
            android:id="@+id/next_button"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:onClick="showNextPage"
            android:text="@string/setupwizard_next"
            android:visibility="gone" />

        <Button
            android:id="@+id/finish_button"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:onClick="finishSetupWizard"
            android:text="@string/setupwizard_finish"
            android:visibility="gone" />

    </LinearLayout>

</LinearLayout>