4 Answers

• contentOffset does not help ?

  take care it's an object so you'll need

  the_scroll.contentOffset.x
  
  the_scroll.contentOffset.y
  

• I tried to use this proporties, but it comes an exception: scrollView.contentOffset is not an object

  Here my code:

  var win = Titanium.UI.currentWindow;
  var scrollView = Titanium.UI.createScrollView({
      contentWidth:'auto',
      contentHeight:'auto',
      top:0,
      bottom:50,
      maxZoomScale:30,
      minZoomScale:1
  });
  
  var view = Ti.UI.createView({
      backgroundImage:'../images/swasi.jpg',
      width:'100%',
      height:500,
  });
  
  view.addEventListener('click',function(event){
      var W = 1809; // Dimension of image
      var H = 2187; // ..
      var x = W* (event.x + scrollView.contentOffset.x)/scrollView.width/scrollView.scale;
      var y = H* (event.y + scrollView.contentOffset.y)/scrollView.height/scrollView.scale;
      label.text= 'x='+parseInt(x) + "\ny=" +parseInt(y);
  
  });
  var label = Ti.UI.createLabel({height:50,bottom:0,text:'--'});
  win.add(label);
  scrollView.add(view);
  win.add(scrollView);
  win.open();
  

  In the demo I'am using this proporty in the callback. I dont know why it should be an error.

  Best regards
  Rainer

• For me, contentOffset is undefined. The top and rect.y properties for both the scrollview and it's child objects are not going to help us here either. The solution is to use the scroll event like so:

  var scrollview = Ti.UI.createScrollView();
  
  function scrollview_scroll_handler(e)
  {
      // e.y contains the current top y position of the contents of the scrollview
  
      Ti.API.info('Scrollview contents y offset: '+e.y);
  }
  scrollview.addEventListener('scroll', scrollview_scroll_handler);
  

  Hope this helps someone :)

• I could not get the contentOffset property or the getContentOffset method to work. I ended up creating a variable in which to store the Y value during the scroll event. When the scroll event stops the final value of Y is stored in the variable and accessible when needed. Hope this helps.