title: How to know pan gesture change direction in ios?
body: <pre><code>- (void)panRecognized:(UIPanGestureRecognizer *)rec
  {
      CGPoint vel = [rec velocityInView:self.view];
      if (vel.x &gt; 0)
      {
          // user dragged towards the right
          counter++;
      }
      else
      {
          // user dragged towards the left
          counter--;
      }
  }
  </code></pre>
  
  <p>When I pan gesture move to left ,then move to right. it will use right .
  I want to How to know pan gesture change direction?</p>