title: How to make whatsapp type of animation for opening the menu from toolbar(actionbar)
body: <h2>Description:</h2>
  
  <ol>
  <li>I recently updated whatsapp and noticed the
  animation for menu item clicked on toolbar. How to achieve this
  effect?</li>
  <li>Are there any opensource projects to achieve this?</li>
  <li>I have not posted any code because. I have no clue how they are doing
  it.</li>
  </ol>
  
  <p><strong><em>Snapshot-1 : Before clicking the attachment button in menu</em></strong>
  <img src="https://i.stack.imgur.com/sDU5U.png" alt="img"></p>
  
  <hr>
  
  <p><strong><em>Snapshot-2 : After clicking the attachment button in menu</em></strong></p>
  
  <p><img src="https://i.stack.imgur.com/ETXfY.png" alt="img2"></p>
  
  <hr>
  
  <h2>How to Achieve this?</h2>