Book Image

Flash iOS Apps Cookbook

By : Christopher Caleb
Book Image

Flash iOS Apps Cookbook

By: Christopher Caleb

Overview of this book

The latest version of Flash Professional can directly target iOS, allowing Flash developers to write applications that will run natively on Apple's iPhone, iPad, and iPod touch. What's more, with Apple loosening its restrictions on third-party technologies, apps written in Flash can now be sold and distributed within the App Store.Flash iOS Apps Cookbook provides the recipes required to build native iOS apps using your existing knowledge of the Flash platform. Whether you want to create something new or simply convert an existing Flash project, the relevant steps and techniques will be covered, helping you achieve your goal.Learn how to configure and use Flash Professional for iOS development by writing and deploying a simple app to a device. Implement many iOS-specific features such a multi-touch, the virtual keyboard, camera support, screen orientation and the Retina display. Overcome the limitations of mobile development by mastering hardware acceleration and optimization. Whether you're an enthusiast or professional developer, the Flash iOS Apps Cookbook is your toolkit to creating high-quality content for iPhone, iPad and iPod touch.
Table of Contents (21 chapters)
Flash iOS Apps Cookbook
Credits
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
Index

Flattening the display list


Flash's drawing tools and rendering engine makes it convenient to create a deeply nested display list. When examining artwork created in Flash, it is fairly common to have to drill down into the top-level clip for several levels and navigate through a complex hierarchical structure until you find your target display object.

Unfortunately, while a desktop computer will be able to easily render complex scenes, the same content running on an iOS device may degrade performance. Deeply nested display lists also cause long event chains that can further hurt the performance. A touch event, for example, must traverse the display list in order to determine the display objects that are to receive the event.

When porting to iOS, rendering is often the biggest performance bottleneck. Consider flattening your display list in order to keep your application's frame rate as high as possible.

We will see how this is done by completely flattening an example nested display list.

Getting...