title: Problems with positioning textView under another textView in relative layout
body: <p>I want to position my textview with numbers under the textview that contains text.
  I use this layout and the textviews overlap:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  
    &lt;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"&gt;
  
  &lt;!--  we include header  --&gt;
  &lt;include
      layout="@layout/header"/&gt;
  
  &lt;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" /&gt;
  
      &lt;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"&gt;
  
  &lt;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" /&gt;
  
      &lt;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"/&gt;   
  
      &lt;/RelativeLayout&gt;
  
     &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>What i get with this is:</p>
  
  <p><img src="https://i.stack.imgur.com/u5b8t.png" alt="enter image description here"></p>