Add a view at a specific position in a list. Original inspiration: https://gist.github.com/iskugor/1485751.

alloy_view_helper.js

Alloy.Globals.insertViewAt = function(parent, element, index) {
  var children = parent.children.slice(0);
	
	for(var i = 0; i < children.length; ++i){
		parent.remove(children[i]);
	}
	
	if(index >= 0) {
		var tmp = children.slice(0, index);
		tmp.push(element);
		children = tmp.concat(children.slice(index));
	}
	
	for (i = 0; i < children.length; ++i) {
		parent.add(children[i]);
	}
}

/**
 * Usage:
 * var view = Ti.UI.createView({backgroundColor: "red"});
 * Alloy.Globals.insertViewAt($.list, view, 1); //where '$.list' is a view in your alloy XML
 */

Note: This is not setup to be failure proof (passing a bad index may be problematic) but when used properly it will work just fine.