Navigation bar similar to LinkedIn on Android
<p>So for Android's LinkedIn app, there is a navigation bar and once you click on the LinkedIn logo, a subnav will drop down. If you click the logo again it will go back up.</p>

<p>What is this referred to as for Android? What steps would I need to take to produce a similar effect?</p>

<p>I'm no so much looking for someone to do it for me, rather point me in the right direction. </p>

<p>Thanks.</p>
