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

Making the whole thing more fluid

The application is now fully functional and is now usable as a whole. But there are two little extra things we can do to make the whole user experience more complete and polished.

Updating stocks when the portfolio has changed

When the user changes the content of the portfolio (or the value of the objective), it makes sense to refresh the stock prices. This will then inform the user immediately how close he/she is from his/her objective.

Instead of implementing a lot of code, we can leverage the existing code already in place of the btnRefresh button. To achieve this, we will fire the click event on the button itself. Inside the ApplicationWindow.js file, we will add the following event listener:

Ti.App.addEventListener('app:portfolioChanged', function() {

Updating stocks as the application starts

One very last thing we can add to make the whole application feel more polished would be to update all the stocks' values every...