title: Custom dropdown item layout has no effect in Android
body: <p>I tried to create a custom dopdown item layout to make the items have more space between them. 
  Originally I had this code:</p>
  
  <pre><code>MyListAdapter adapter = new MyListAdapter (this, tmpData);
  adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
  </code></pre>
  
  <p>And this was the built-in layout of Android:</p>
  
  <pre><code>&lt;CheckedTextView xmlns:android="http://schemas.android.com/apk/res/android" 
      android:id="@android:id/text1"
      style="?android:attr/spinnerDropDownItemStyle"
      android:singleLine="true"
      android:layout_width="match_parent"
      android:layout_height="?android:attr/dropdownListPreferredItemHeight"
      android:ellipsize="marquee" /&gt;
  </code></pre>
  
  <p>I modified the code to this:</p>
  
  <pre><code>MyListAdapter adapter = new MyListAdapter (this, tmpData);
  adapter.setDropDownViewResource(R.layout.custom_simple_spinner_dropdown_item);
  </code></pre>
  
  <p>And used this layout:</p>
  
  <pre><code>&lt;CheckedTextView xmlns:android="http://schemas.android.com/apk/res/android"
                   android:id="@android:id/text1"
                   android:singleLine="true"
                   android:layout_width="match_parent"
                   android:layout_height="wrap_content"
                   android:ellipsize="marquee"
                   android:layout_marginBottom="24dp"
                   android:layout_marginTop="24dp"
      /&gt;
  </code></pre>
  
  <p>Nothing has changed. </p>
  
  <p>Can you tell me why?</p>