title: How to speed up the bootstrap of WebView in my Activity?
body: <p>I am currently developing an app with many HTML pages to render.<br>
  The problem is that Android took about 500ms to start a WebView in my Activity. </p>
  
  <p>i.e.:</p>
  
  <ol>
  <li>I clicked some Button to trigger an WebView to render, in a new Activity.   </li>
  <li>Android opened another Activity, took about 100ms  </li>
  <li>Android opened a WebView control, took about 300~500ms.  </li>
  <li>This WebView starts to load the URL as usual and render the web content.</li>
  </ol>
  
  <p>My question is: how to reduce the bootstrap time for opening a new WebView?  ( the step2, but not step 3)</p>
  
  <p>As a comparison, IOS bootstraps the WebView immediately, i.e.: 10ms</p>