title: Detecting Touches outside UIView subview
body: <p>I'm modulating an app I'm making.  I want my subview to detect touches at any location on screen either to the left or right.  Now that it is a subview, I'm only able to detect touches within its bounds.  I tried changing the bounds of my subview, but that causes the subview to disappear from the screen completely.  Can my touch location be detected outside my subview?</p>
  
  <pre><code>UITouch *touch = [touches anyObject];
      touchLocation = [touch locationInView:self.superview];
  
      if(touchLocation.x &lt; self.center.x) //touches occur to the left
      {
          right = false;
      }
  
      if(touchLocation.x &gt; self.center.x) //touches occur to the right
      {
          right = true;
      }
  </code></pre>