title: layout_below doesn't work in RelativeLayout
body: <p>In the below XML layout, I am trying to make each value(accXValue, accYValue,accZValue) appear to the right of their respective label as shown below in the code.</p>
  
  <p>At runtime, all the values are placed over each other to the right of the (tv_accX_label), all the values overlap each other and located in one position despite the fact that I specified the attributes <code>layout_below</code>.</p>
  
  <p>Please let me know what I am missing.</p>
  
  <p><strong>XML</strong>:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;RelativeLayout 
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent"&gt;
  &lt;TextView 
      android:id="@+id/tv_accX_label"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_alignParentStart="true"
      android:text="Acc[X]: "/&gt;
  &lt;TextView 
      android:id="@+id/tv_accX_value"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_toRightOf="@+id/tv_accX_label"/&gt;
  
  &lt;TextView 
      android:id="@+id/tv_accY_label"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_alignParentStart="true"
      android:layout_below="@+id/tv_accX_label"
      android:text="Acc[Y]: "/&gt;
  &lt;TextView 
      android:id="@+id/tv_accY_value"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_toEndOf="@+id/tv_accY_label"/&gt;
  
  &lt;TextView 
      android:id="@+id/tv_accZ_label"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_alignParentStart="true"
      android:layout_below="@+id/tv_accY_label"
      android:text="Acc[Z]: "/&gt;
  &lt;TextView 
      android:id="@+id/tv_accZ_value"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_toEndOf="@+id/tv_accZ_label"/&gt;
  
  &lt;Button 
      android:id="@+id/btn_send"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:layout_below="@+id/tv_accZ_label"
      android:gravity="center_vertical|center_horizontal"
      android:text="send to frag_2"/&gt;
  </code></pre>
  
  <p></p>