Book Image

Creating Mobile Apps with Appcelerator Titanium

By : Christian Brousseau
Book Image

Creating Mobile Apps with Appcelerator Titanium

By: Christian Brousseau

Overview of this book

Smartphones and tablets have really changed the technological landscape over the last 3-4 years. Much like the web did in the last decade, these powerful tools have changed the way people communicate and access information. Such a wide market creates opportunities for developers who have the skills to develop mobile applications. "Creating Mobile Apps with Appcelerator Titanium" is a practical, step-by-step guide to building iPhone, iPad, and Android applications using JavaScript. This book will give you a solid grounding of the dos and don'ts of mobile development and also covers a lot of the functionalities offered by the Titanium platform. This book begins with a look at what the Titanium platform has to offer. By taking you through clear tutorials on developing each application step-by-step, it helps you to apply your newly acquired knowledge afterwards. The difficulty level gradually increases along the course of the book. Each application from this book covers different aspects of mobile development. Every chapter starts by defining the application's features as well as the user interface structure. Every single code section is then explained and put into context allowing you to gain a clear understanding of their purpose and functionality. The book takes a “small milestone” approach, allowing you to actually run the application and see the progression. Every step is accompanied by many screenshots so you can see the expected result on screen. You will learn everything you need to know to develop your very own mobile applications. The book takes a laid-back approach to Titanium development and provides information in a way designed to never overwhelm the reader with information and also uses clear diagrams, screenshots, and tips throughout.
Table of Contents (18 chapters)
Creating Mobile Apps with Appcelerator Titanium
About the Author
About the Reviewers

Wiring the preference service to the UI

Now that we have our preference service in place, we can now add a functionality to our portfolio window, knowing that the changes done by our user won't be lost.

Adding a new stock to the list

Probably the most important feature in our application is the ability to add new stocks. Let's start with this one. We will add a click event handler on the btnAddStock button. Inside this handler, we will create a new Stock object using the symbol (in upper case), and quantity entered by the user. Once our stock object is created, we will add it to the table view underneath using the addCustomRow function. We will create this function in just a moment, but for now, remember that it takes two parameters, the table view in which to add the new row and the stock object containing the information we will need to display. Finally, we reset the txtSymbol and txtQuantity text field values so that the user can add a new stock if desired: