title: How to add line divider for menu item Android
body: <p>My menu item become bigger so that I want group them and make a line divider to separate each group.
  What should I do now ?</p>
  
  <pre><code>    &lt;menu xmlns:android="http://schemas.android.com/apk/res/android"
          xmlns:app="http://schemas.android.com/apk/res-auto"&gt;
  &lt;!--group1--&gt;
              &lt;item
                  android:id="@+id/action_addtag"
                  android:title="@string/add_hashtag_string"
                  app:showAsAction="never" /&gt;
              &lt;item
                  android:id="@+id/action_block_list"
                  android:title="Block"
                  app:showAsAction="never" /&gt;
              &lt;item
                  android:id="@+id/action_report_list"
                  android:title="Report"
                  app:showAsAction="never" /&gt;
  &lt;!--group2--&gt;
              &lt;item
                  android:id="@+id/terms"
                  android:title="Terms"
                  app:showAsAction="never" /&gt;
              &lt;item
                  android:id="@+id/feedback"
                  android:title="FeedBack"
                  app:showAsAction="never" /&gt;
  &lt;!--group3--&gt;
              &lt;item
                  android:id="@+id/action_setting"
                  android:title="Setting"
                  app:showAsAction="never" /&gt;
      &lt;/menu&gt;
  </code></pre>