title: How to remove the separator line in the spinner?
body: <p>How to remove the separator line in the spinner?</p>
  
  <p>For example, how can I remove/control these white separator lines?</p>
  
  <p><img src="https://i.stack.imgur.com/h8esi.jpg" alt="spinner"></p>
  
  <p>P.S. This is the row layout:</p>
  
  <pre><code>&lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:background="@android:color/black"&gt;
  
      &lt;TextView
      android:id="@+id/catalog_spinner_item_textView"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:padding="11dp"
      android:text="@string/CatalogSpinnerItemRowDefaultText"
      android:textSize="18sp"
      android:gravity="center_vertical"/&gt;
  &lt;/LinearLayout&gt;
  </code></pre>