Problems with positioning textView under another textView in relative layout

Question

I want to position my textview with numbers under the textview that contains text. I use this layout and the textviews overlap:

<?xml version="1.0" encoding="utf-8"?>

  <LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:background="@drawable/back"
xmlns:android="http://schemas.android.com/apk/res/android">

<!--  we include header  -->
<include
    layout="@layout/header"/>

<Spinner
    android:id="@+id/spinner"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="center_horizontal"
    android:layout_marginTop="15dip"
    android:layout_marginLeft="5dip"
    android:layout_marginRight="5dip"
    android:textColor="#ffffff"
    android:background="@drawable/spin" />

    <RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content" 
android:background="#000000">

<TextView
    android:id="@+id/tv1"
    android:text="Some text to display:"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:layout_marginTop="10dip"
    android:textColor="#ffffff" />

    <TextView
    android:id="@+id/number"
    android:text="123 456 789"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:textSize="30dip"
    android:layout_marginTop="10dip"
    android:textColor="#ffffcc"/>   

    </RelativeLayout>

   </LinearLayout>

What i get with this is:

Answer 1

you need android:layout_below="@id/tv1" in your TextView for numbers