zoom.addEventListener("click", function() {

    myScroll.zoomScale=4;
});
/* where zoom is mybutton and myScroll the scrollView */

3 Answers

• Accepted Answer

  The soomScale property can only be used while you are pinching on a view.

  e.g.

  var scrollView = Titanium.UI.createScrollView({
      contentWidth:'auto',
      contentHeight:'auto',
      top:0,
      showVerticalScrollIndicator:true,
      showHorizontalScrollIndicator:true
     minZoomScale:0,  // your view can not zoom out smaller then 100%
     maxZoomScale:10, // your view can zoom in with a factor 10 (1000% ?)
     zoomScale:5 // default zoomed in stage when view is added on window (500%)
  });
  

  If you want the lavel to be bigger, just modify the fontsize instead, otherwise youw whole view will zoom also.

• Thanks for your help, in fact I figured out that the zoom doesn't work if the max and min zoom properties are not defined.
  I also tried setting the font size but when I set a bigger font size on a text that's too short to scroll, the scrollable state is not fired automatically and I'm not able to scroll the biggertext I get.

• I was struggling to get this working, it would appear I needed to explicitly set the zoomScale property in the scrollView declaration. Then in other parts of the code if I set the zoomScale it changes. Before doing that it was ignoring it.. Weird.. (1.8.0.1)