With Alloy and Hyperloop, you can quickly and easily expose native UI as Custom Alloy tags by leveraging the namespace (ns) attribute and commonjs modules.
Alloy allows you to create your own UI element that can be included into the XML View heirarchy in one of two ways, an Alloy Widget or through the use of Custom Tags.
To create your own custom tag, you link the tag to the commonjs module with the namespace attribute (ns). Here is an example using a custom tag to render a standard Titanium View: