title: Background for Android Layout
body: <p>How do I add the basic gray/black holo background to a <code>TextView</code> and a <code>SeekBar</code>. Both are overlayed over a camera preview contained by the <code>FrameLayout</code>. Currently both are barely visibile because of the missing background.</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"
      android:orientation="vertical" &gt;
  
      &lt;FrameLayout
          android:id="@+id/scanner_camera_preview"
          android:layout_width="match_parent"
          android:layout_height="match_parent" /&gt;
  
      &lt;TextView
          android:id="@+id/scanner_help_text"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:layout_alignParentBottom="true"
          android:text="Den Zoom-Regler benutzen um den Barcode auszuwählen." /&gt;
  
      &lt;SeekBar
          android:id="@+id/scanner_camera_seek"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:layout_above="@id/scanner_help_text" /&gt;
  
  &lt;/RelativeLayout&gt;
  </code></pre>