title: How to add a line at the bottom of spinner as like edittext in android
body: <p>Hello I am making demo application in which i am using <code>EditText</code> in which a line appears at the bottom that is ok but it is not in case of spinner.</p>
  
  <p>How this is possible to do ?</p>
  
  <p>layout.xml</p>
  
  <pre><code>&lt;EditText
      android:id="@+id/twitterEditText"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:layout_marginTop="15dp"
      android:hint="@string/twitter_account"
      android:inputType="textWebEmailAddress" /&gt;
  
  
  &lt;Spinner
      android:id="@+id/countrySpinner"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:layout_marginTop="15dp"
      android:hint="@string/country" /&gt;
  
  &lt;Spinner
      android:id="@+id/stateSpinner"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:layout_marginTop="15dp"
      android:hint="@string/state" /&gt;
  
  &lt;Spinner
      android:id="@+id/citySpinner"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:layout_marginTop="15dp"
      android:hint="@string/city" /&gt;
  </code></pre>
  
  <p><img src="https://i.stack.imgur.com/ZNry5.png" alt="enter image description here"></p>