title: ImageView displaying in layout but not on actual device
body: <p>I have an ImageView that I want to display matching the full width of the device, I realized that like this:</p>
  
  <pre><code>&lt;ImageView
      android:id="@+id/home_bar_newvault"
      android:layout_width="wrap_content"
      android:layout_height="40dp"
      android:scaleType="centerCrop"
      android:layout_alignParentBottom="true"
      android:src="@drawable/home_bar" /&gt;
  </code></pre>
  
  <p>The home_bar is a PNG image file with the following dimensions: 2399x254. When I choose to view the Graphical Layout of the UI it displays the imageview correctly at the bottom of the activity. However, when I start the application on my device it won't display the Imageview at all. </p>