The day will come where all the APIs offered by Titanium won't be able to fulfill one specific need. Specific as it may be, it might prove vital for your business. Titanium allows more experienced developers to develop extension modules. The name says it all; extension modules extend the capabilities of Titanium while keeping the compatibility with the existing JavaScript code.

This is interesting because some platforms would require you to rewrite the entire application in their respective language (objective C or Java), just to have access to one specific feature of the platform.

Module developers can also hope to recoup their investment by distributing their modules on the Appcelerator marketplace, where other developers can download existing modules (for free or for a fee).

Each chapter covers the development of a complete mobile application. At the end of each chapter, you will have a working mobile application whether it's for iOS, Android, Blackberry 10, Tizen, or even Mobile web. There is no better way to learn how to do something than building it yourself. Developers can start from any application that has similarities to the one they wish to produce and extend it from there.

Another goal of this book is to introduce some aspects of Titanium that are probably less known by mobile developers.

Chapter 1, Stopwatch (with Lap Counter), guides the reader in creating a standalone Stopwatch application. This first application is pretty straightforward; it covers interactions between user interface elements and data structures.

Chapter 2, Sili, the assistant that just listens, guides the reader in creating a voice recorder application. While Siri interprets what the user is saying, this application simply listens by storing the recordings on the device for later use. It covers media management as well as file system access on the device.

Chapter 3, The To-do List, guides the reader in creating a To-do items management application. It allows the creation and deletion of items, as well as the possibility to mark them as done. All items are persisted in an SQLite database. It covers the integration with an embedded database.

Chapter 4, Interactive E-book for iPad, guides the reader in creating an interactive electronic book (e-book) application with realistic page flipping (like a real book). This is an iPad-specific application in order to benefit from the large screen resolution. It covers the integration and utilization of a native module as well a rich media presentation.

Chapter 5, You've Got to Know When to Hold 'em, guides the reader in creating a standalone Stock Portfolio application. It allows users to organize stocks (price and quantity). From there, the user selects an amount of money he/she wants to gain through his/her investments. The application will periodically retrieve stock prices from the web and calculate the sum of money earned. It will then indicate how far (or close) he/she is from his/her objective. It covers HTTP API calls, property persistence, and custom UI controls.

Chapter 6, JRPG – Second to Last Fantasy, guides the reader in creating a native mobile game. The game shows how players roam around a map from a top view perspective, much similar to a classic Japanese RPG. It covers graphics manipulation and touch control.

Chapter 7, JRPG – Second to Last Fantasy Online, guides the reader in adding online multiplayer functionality to a game. This chapter re-uses the code from the game created in Chapter 6, JRPG – Second to Last Fantasy. It covers network interaction, intervals, and testing.

Chapter 8, Social Networks, guides the reader in creating a social application that allows them to update their status on Facebook and Twitter with a single click. It covers application preferences, social network authentication, and integration.

Chapter 9, Marvels of the World Around Us, guides the reader in creating an application that shows online pictures that were taken near the device's current location. It covers location services, web API calls, and photo gallery integration.

Chapter 10, Worldwide Marco Polo, guides the reader in creating a social application that allows users to check in at a location based on the device's location and then share this check in with the world using Appcelerator Cloud Services. It covers location services, cloud integration, and map view.

Appendix, References, contains detailed information about the JavaScript frameworks, libraries, and native extension modules used throughout the book, as well as download locations, and where to find the source code (when applicable).

You will need a computer with at least 2 GB of memory and a recent version of Windows, Mac OS X, or Ubuntu in order to use Titanium SDK properly. You will also require the Oracle Java Development Kit as well as an install of Node.js to use the Titanium Command Line Interface (CLI) tools.

If you are developing an iOS application, you will also need to install the Xcode Integrated Development Environment (IDE). For Android development, you will need the Android SDK provided by Google for free (Titanium Studio provides wizards that can automate the installation).

To develop iOS (iPhone, iPad) applications, you absolutely need a Mac. This limitation is enforced by Apple requiring the use of its own tools. This is not related to Titanium.

This book is geared towards developers who already have experience with more modern languages and development environments. It is for those who are also familiar with concepts such as Object Oriented Programming (OOP), reusable components, AJAX closures, and so on. This book is also geared for those who are not yet familiar with mobile development, but have a keen interest in this topic.

The book is geared towards existing Titanium developers, who have some (or more) experience with the SDK and the toolset; it is also for those who wish to know more about Titanium and its broad range of capabilities (many of them are not yet very well known). This book can help developers identify how they can extend Titanium's basic set of features by using the extension modules.

This book begins with the basics in the first chapters and it increases throughout the course of the book. The first few chapters will give very detailed step-by-step procedures.

In this book, you will find a number of styles of text that distinguish between different kinds of information. Here are some examples of these styles, and an explanation of their meaning.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: " We create the window using the Ti.Ui.createWindow function."

A block of code is set as follows:

var win = Ti.UI.createWindow({
  backgroundColor: '#ffffff',
  layout: 'vertical'
});

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

var buttonStartLap = Ti.UI.createButton({
  title: 'GO!',
  color: '#C0BFBF',
  width: '50%',
  height: Ti.UI.FILL,
  backgroundColor: '#727F7F',
  font: {
    fontSize: '25sp',
    fontWeight: 'bold'
  }
});

Any command-line input or output is written as follows:

[INFO] 00:01:17:37
[INFO] 00:02:53:19
[INFO] 00:04:06:93
[INFO] 00:06:11:52

New terms and important words are shown in bold. Words that you see on the screen, in menus or dialog boxes for example, appear in the text like this: "In the Classic section, select the Default Project template, and then click on Next >."

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