title: how to set dropdown arrow in spinner with background?
body: <p>I have dropdown with black Background, blue outline of spinner, How to put arrow image in dropdown?</p>
  
  <p>I am using </p>
  
  <blockquote>
    <p>android:background="@android:drawable/btn_dropdown"</p>
  </blockquote>
  
  <p>but that will remove my current background i.e. black background with blue outline. For that I am using a drawable</p>
  
  <pre><code>&lt;shape
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:shape= "rectangle"  &gt;
      &lt;solid android:color="#000000"/&gt;
      &lt;stroke android:width="2dp"  android:color="#405999"/&gt;
  &lt;/shape&gt;
  </code></pre>