how do you remove the navigation bar on Android?
<p>When I listen to a YouTube video fullscreen in landscape on my Galaxy Nexus, the navigation bar on the right disapear after a few seconds (the bar which contains the "back", "home" and "recent apps" buttons ). </p>

<p>I want to do the same thing when a user watch a video in my app. What is the code to hide the navigation bar?</p>

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<p>[UPDATE] Here is the bar I want to hide. Not the title bar, nor the action bar. The navigation bar. (the bar which contains the "back", "home" and "recent apps" buttons ). I also don't want to "dim" the buttons. I'm looking into removing the bar entirely (like the YouTube app does when you plan a video fullscreen in landscape mode)</p>

<p><img src="http://i.stack.imgur.com/uv34G.png" alt="enter image description here"></p>
