title: Back navigation icon is not shown in ToolBar with SearchView in android
body: <p>I have updated google play services. Before updating I was using ActionBar and everything was fine. But after updating play services I am using ToolBar. Now when I click on search icon on action bar then SearchView is shown but back navigation icon is not visible. but when I click on the place of navigation button it's still functional i.e. it goes back.</p>
  
  <p>Please see attached screen shot.
  <a href="https://i.stack.imgur.com/hjPbE.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/hjPbE.png" alt="enter image description here"></a></p>
  
  <p>then please suggest how can i display this back navigation button.</p>