title: How to find out if an android device has back and menu button as part of screen
body: <p>I see in shops now that device (mostly tablets) have the back and menu buttons as part of the actual screen. As I can't afford another device and mine has back and menu buttons not part of the screen, will my app be able to make use of these if it uses the whole screen. I am using</p>
  
  <pre><code>this.requestWindowFeature(Window.FEATURE_NO_TITLE);
  this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
  </code></pre>
  
  <p>to make it full screen. </p>
  
  <p>If these buttons do get lost is there a way of finding this out, so as to put on screen alternatives for such devices. Also note that I am using <code>minSdkVersion="7"</code>, meaning I would like it to work on anything from <code>2.1 upwards.</code></p>