title: How to add a drawer and a search icon on my app bar in flutter
body: <p>I'm new to flutter and exploring it. I already have an app bar but I can't seem to figure out how to properly display a drawer icon and a search icon on it. I want it to look like the gmail app bar like the image below. I am working on a company helpdesk mobile app. Thanks.</p>
  
  <p><a href="https://i.stack.imgur.com/QQ3Cw.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/QQ3Cw.jpg" alt="gmail app bar"></a></p>