title: React Native : How to make a sticky SectionList header when it is surrounded by ScrollView
body: <p>I know that <code>SectionList</code> sticks its header by default in iOS.
  However, when <code>SectionList</code> is surrounded by <code>ScrollView</code>, no longer sticky header working.</p>
  <p>My basic structure is like this.</p>
  <pre><code>&lt;ScrollView&gt;
    &lt;Text style={styles.paragraph}&gt;...&lt;/Text&gt;
    &lt;SectionList /&gt;
  &lt;/ScrollView&gt;
  </code></pre>
  <p>( And live test code is <a href="https://snack.expo.io/H1aSPhp8b" rel="nofollow noreferrer">here</a> )</p>
  <p>If I remove <code>ScrollView</code> and <code>Text</code>, then sticking header works well. But I want to show a Text (or <code>Image</code>, <code>View</code> whatever) before <code>SectionList</code> starts.</p>
  <p>Is there a way to solve?</p>
  <p>Thanks.</p>