From Simple Appcelerator Titanium Alloy App Videos - https://www.youtube.com/watch?v=Sz_V5HAqroU

index.js

//
var peopleService = require('peopleService');

/**
 * called when user clicks on table view. The _event will provide
 * the index of the item clicked in the table
 * 
 * @param {Object} _event
 */
function clickedOnTableView(_event) {
    // display to console log the _event object for debugging
    Ti.API.info(JSON.stringify(_event,null,2));
    
    // get data using index provided, show alert
    alert("clicked on " + sampleTableData[_event.index].title);
}

// Set the sample data, the tableView by default will render what the
// title property is set to
var sampleTableData = [
{"title":"Aaron", }, 
{"title":"Andrea"}, 
{"title":"Bryce"}, 
{"title":"Reina"}
];

// set data
$.myTableView.data = sampleTableData;

// open the view
$.index.open();


peopleService.getPeople(function(_response){
	if (_response.success) {
		
	} else {
		Ti.API.info('ERROR - ' + _response.error);
	}
});

index.tss

".container": {
	backgroundColor:"white"
}

"Label": {
	width: Ti.UI.SIZE,
	height: Ti.UI.SIZE,
	color: "#000"
}

"#label": {
	font: {
		fontSize: 12
	}
}

index.xml

<Alloy>
	<!-- on IOS we add the NavigationWindow to wrap UI,
	this will place the tableView properly in the page -->
	<NavigationWindow>
		<Window class="container">
			<!-- listen for click and call the function specified -->
			<TableView id="myTableView" onClick="clickedOnTableView"></TableView>
		</Window>
	</NavigationWindow>
</Alloy>

peopleService.js

exports.getPeople = function(_callback) {
	// https://randomuser.me/ for information on API

	//http://docs.appcelerator.com/titanium/3.0/#!/api/Titanium.Network.HTTPClient

	// specify the numbers of user you want returned
	var url = 'http://api.randomuser.me/?results=20';
	var client = Ti.Network.createHTTPClient({
		// function called when the response data is available
		onload : function(e) {
			Ti.API.info("Received text: " + this.responseText);

			// API will convert to JSON for you!!
			_callback({
				success : true,
				data : this.responseJSON
			});
		},
		// function called when an error occurs, including a timeout
		onerror : function(e) {
			Ti.API.debug(e.error);
			_callback({
				success : false,
				error : e
			});
		},
		timeout : 5000 // in milliseconds
	});
	// Prepare the connection.
	client.open("GET", url);
	// Send the request.
	client.send();

};