title: Android ADT ( 4.3) XML EDitor : Errror parsing XML: not well-formed ( invalid token)
body: <p>I actually don't understand why the editor is raising this error, in my main_activity.xml file for the 
  
  <pre><code> &lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:tools="http://schemas.android.com/tools"
      android:layout_width="fill_parent"
      android:layout_height="fill_parent" &gt;
      &lt;FrameLayout
          android:id="@+id/parentFrameLayout"
          android:layout_width="fill_parent"
          android:layout_height="fill_parent" &gt;
  
          &lt;ImageView
              android:id="@+id/backgroundImageView"
              android:layout_width="fill_parent"
              android:layout_height="fill_parent"
              android:scaleType="fitXY"
              android:src="@drawable/background" &gt;
          &lt;/ImageView&gt;
      &lt;/FrameLayout&gt;
  &lt;/RelativeLayout&gt;
  </code></pre>