title: attribute is missing the android specific namespace
body: <p>Here is the snippet of main.xml.Although android:layout_width is used its giving attribute is missing.</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;LinearLayout xmlns="http://schemas.android.com/apk/res/android"
      xmlns:tools="http://schemas.android.com/tools"
      android:orientation="vertical" 
      android:layout_width="match_parent"
      android:layout_height="match_parent" &gt;
      &lt;TextView android:id="@+id/eventlabel" 
          android:layout_width="fill_parent" 
          android:layout_height="wrap_content" 
          android:layout_marginLeft="10px" 
          android:layout_weight="1" 
          android:paddingBottom="10px"/&gt;
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>Could someone point out the mistake?Thanks</p>