title: How to prevent the screen of an android device to turn off during the execution of an Activity?
body: <p>I have an <code>Activity</code> that usually needs some time to watch the screen without interacting with it.</p>
  
  <p>The problem is that the screen turns off, just like with almos any other app.
  I want to prevent that automatic turn off for my <code>Activity</code>, like Dolphin HD does (if you configure it from the settings menu).</p>
  
  <p>I want to let the user to turn off the screen pressing the usual block button, but prevent the automatic block of the device while in my <code>Activity</code>.</p>
  
  <p>How can I achieve this?</p>
  
  <p>Thanx.</p>