title: Android background with a thin line
body: <p>I would like to create a background for my layouts.</p>
  
  <p>What I used still now is:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;layer-list xmlns:android="http://schemas.android.com/apk/res/android"&gt;
  &lt;item&gt;
      &lt;shape android:shape="rectangle"&gt;
          &lt;solid android:color="@android:color/darker_gray" /&gt;
      &lt;/shape&gt;
  &lt;/item&gt;
  
  &lt;item android:bottom="5dp"&gt;
      &lt;shape android:shape="rectangle"&gt;
          &lt;solid android:color="@android:color/black" /&gt;
     &lt;/shape&gt;
  &lt;/item&gt;
  &lt;/layer-list&gt;
  </code></pre>
  
  <p>It works nice untill the activity background were black... But now I would change my activity background. So not I would use a transparent background and draw a thin(5dp) darker_gray line at button.</p>
  
  <p>Would somebody help me to create it by using items and shapes ... like this example shows?</p>