title: ClassNotFoundException for android.view.Space when running application
body: <p>I'm having an issue running my application when certain elements exist in the layout of my activity.  I have the following layout, and I have issue when I include the "Space" element:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                android:orientation="vertical" &gt;
  
  &lt;Button
         android:id="@+id/button1"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_alignParentBottom="true"
         android:layout_alignParentLeft="true"
         android:text="@string/foursquare" /&gt;
  
  &lt;Button
        android:id="@+id/button2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_above="@+id/foursquare_button"
        android:layout_alignParentLeft="true"
        android:text="@string/yelp" /&gt;
  
  &lt;Space
      android:layout_width="match_parent"
      android:layout_height="100px"
      android:layout_weight="0.18" /&gt;
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>The error I get is this:</p>
  
  <blockquote>
    <blockquote>
      <p>11-26 11:14:09.875: E/AndroidRuntime(10485): FATAL EXCEPTION: main<br/>
      ...<br/>
      11-26 11:14:09.875: E/AndroidRuntime(10485): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.infoit.nfc.activity/com.infoit.nfc.activity.ViewTag}: android.view.InflateException: Binary XML file line #23: Error inflating class Space<br/>
      ...<br/>
      11-26 11:14:09.875: E/AndroidRuntime(10485): Caused by: android.view.InflateException: Binary XML file line #23: Error inflating class Space<br/>
      ...<br/>
      11-26 11:14:09.875: E/AndroidRuntime(10485): Caused by: java.lang.ClassNotFoundException: android.view.Space in loader dalvik.system.PathClassLoader[/data/app/com.infoit.nfc.activity-2.apk]<br/>
      ...<br/></p>
    </blockquote>
  </blockquote>
  
  <p>If I remove the Space element everything is peachy keen.  Somehow it's not able to find the Space class even though I thought defining the xmlns would solve the issue.  I feel this is something simple, but I am missing it.</p>