app.js

var window = Ti.UI.createWindow({
	backgroundColor:'white'
});

var scroller = Ti.UI.createScrollView({
	top:60,
	contentHeight:'auto'
});
window.add(scroller);

var container = Ti.UI.createView({
	layout:'vertical',
	height:'auto',
	top:0
});
scroller.add(container);

var button = Ti.UI.createButton({
	top:5,
	width:150,
	height:50,
	title:'Add content'
});
window.add(button);

var counter = 0;
function addContent() {
	var dynamicContent = Ti.UI.createView({
		height:50,
		top:5,
		left:5,
		right:5,
		backgroundColor:(counter % 2) ? 'red' : 'green'
	});
	container.add(dynamicContent);
	counter++;
}
button.addEventListener('click', addContent);

window.open();