title: UIScrollView zooming in a fixed point, and disable the pinch in/out
body: <p>i'm stuck on a problem with UIScrollView</p>
  
  <p>i wanna the scroll view be zoomed when the user tap on a specific point, and prevent the user to zoom in/out using Pinch Zoom Gestures, how can i do it?</p>
  
  <pre><code>[imgScroll setDelegate:self];
  float minimumScale = [imgScroll frame].size.height  / [imageView frame].size.height;
  [imgScroll setMinimumZoomScale:minimumScale];
  [imgScroll setZoomScale:minimumScale];
  
  - (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView {
  return [imageView viewWithTag:ZOOM_VIEW_TAG];}
  
  
  - (void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(float)scale {
  [scrollView setZoomScale:scale+0.01 animated:NO];
  [scrollView setZoomScale:scale animated:NO];}
  </code></pre>
  
  <p>thx in advance.</p>