A draggable and swipeable 5 stars rating view for Android and iOS

rating.js

var win = Ti.UI.createWindow({
	backgroundColor:'#eeeeee'
});

var isAndroid = Ti.Platform.osname == "android";
var starSelectedImage = '/images/ic_star_black.png';
var starOriginalImage = '/images/ic_star_border_black.png';
//icons from Google Material Design (search for the "star" icon): https://design.google.com/icons/
var starWidth = 28;
var coverView = Ti.UI.createView();

var starsArray = [];
var starsContainer = Ti.UI.createView({
   left: '18dp',
   height:40,
   bubbleParent: false
});
for(var i = 0; i < 5; i++) {
   var star = Ti.UI.createView({
      backgroundImage: starOriginalImage,
      width: starWidth,
      height: starWidth,
      left: i * (starWidth + 10),
      index: i,
      toggle: false
   });
   starsArray.push(star);
   starsContainer.add(star);
}

starsContainer.addEventListener('touchstart',onStar);
starsContainer.addEventListener('touchmove',onStar);
starsContainer.addEventListener('touchend',onStarEnd);
starsContainer.add(coverView);
win.add(starsContainer);

var densityMultiplier = isAndroid ? Ti.Platform.displayCaps.logicalDensityFactor : 1;

function onStar(touch){
   var position = (touch.x / densityMultiplier) - (starWidth * 0.4);
	for (var i = 0; i < starsArray.length; i++) {
		var item = starsArray[i];
		if(position >= item.left){
         item.setBackgroundImage(starSelectedImage);
         item.width = starWidth+3;
         item.height = starWidth+3;
         item.toggle = true;
      }else{
         item.setBackgroundImage(starOriginalImage);
         item.width = starWidth;
         item.height = starWidth;
         item.toggle = false;
      }
	}
};

function onStarEnd(touch){
	var ratingValue = 0;
	for (var i = 0; i < starsArray.length; i++) {
		if(starsArray[i].toggle === true){
			ratingValue = starsArray[i].index + 1;
		}
	}
	//success
	console.log(' **************** rating: ' + ratingValue);
};
win.open();

is funny to see that view.setBackgroundImage('img.png') performs much faster than image.setImage('img.png')