title: Activity in portrait or reverse portrait only
body: <p>I want my activity to be available only in both portrait modes - portrait and reversePortrait. How can I achieve this? When I set <code>android:screenOrientation="portrait"</code> it will force activity to be only in normal portrait - vice versa with reversePortrait. </p>
  
  <p>Please, don't tell me it's a bad approach to force/lock orientation. I know about it, but still client is requesting it. Thanks for understanding and for any ideas.</p>
  
  <p><strong>UPDATE:</strong> API Level 11 and higher</p>