3 Answers

• Accepted Answer

  Although the Android OS does support the pinch gesture (according to this blog post), it's not widely used afaik.Titanium certainly does not yet support it explicitly.

  However, scrollViews inherently provide pinch zooming via the maxZoomScale / minZoomScale. See this and this example.

  With android you can use canScale, which displays a +/- magnifier control on an imageview. From my limited trials, the image size remains the same, and the view is magnified within those dimensions.

  Be aware that you can change imageView dimensions on the fly to scale images (as the result of a gesture possibly), but currently this only works for all the background*Image properties, and not the image property.

  For android, this ticket may be useful to watch.

  Hal

  PS. Apologies for the double post

• Dear please try this code..

  You can scale your image by double tap on that particular image.

  var imagePhoto11 = Titanium.UI.createImageView({
  image:'social.png',
  backgroundColor:'transparent',
  left:50,
  top:100,
  bottom:50,
  right:50
  });

  magePhoto11.addEventListener('pinch', function(e) {
  var t = Ti.UI.create2DMatrix().scale(e.scale);
  imagePhoto11.transform = t;
  });

• I made a module to support pinch events on TiViews: http://code.google.com/p/titanium-android-pinchview/