Flash Development for Android Cookbook: Over 90 recipes to build exciting Android applications with Flash, Flex, and AIR
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About this ebook
Flash has now arrived to Android — the fastest growing smartphone platform. This offers massive opportunities for Flash developers who want to get into mobile development. At the same time, working on smartphones will introduce new challenges and issues that Flash developers may not be familiar with.
The Flash Development for Android Cookbook enables Flash developers to branch out into Android mobile applications through a set of essential, easily demonstrable recipes. It takes you through the entire development workflow: from setting up a local development environment, to developing and testing your application, to compiling for distribution to the ever-growing Android Market.
The Flash Development for Android Cookbook starts off with recipes that cover development environment configuration as well as mobile project creation and conversion. It then moves on to exciting topics such as the use of touch and gestures, responding to device movement in 3D space, working with multimedia, and handling application layout. Essential tasks such as tapping into native processes and manipulating the file system are also covered. We then move on to some cool advanced stuff such as Android-specific device permissions, application debugging and optimization techniques, and the packaging and distribution options available on the mobile Android platform.
In a nutshell, this cookbook enables you to get quickly up to speed with mobile Android development using the Flash Platform in ways that are meaningful and immediately applicable to the rapidly growing area of mobile application development.
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Flash Development for Android Cookbook - Joseph Labrecque
Table of Contents
Flash Development for Android Cookbook
Credits
Foreword
Mobile is as HOT as a Habanero Chili!
Android with a dash of Flash
About the Author
About the Reviewers
www.PacktPub.com
Support files, eBooks, discount offers and more
Why Subscribe?
Free Access for Packt account holders
Instant Updates on New Packt Books
Preface
What this book covers
What you need for this book
Who this book is for
Conventions
Reader feedback
Customer support
Downloading the example code
Errata
Piracy
Questions
1. Getting Ready to Work with Android: Development Environment and Project Setup
Introduction
Using Flash Professional CS5.5 to develop Android applications
How to do it…
How it works…
There's more…
Targeting AIR for Android with Flash Professional CS5.5
How to do it…
How it works…
There's more…
See also…
Using Flash Builder 4.5 to develop Android applications
How to do it…
How it works…
See also…
Enabling Flash Builder 4 or Flex Builder to access Flex Mobile SDKs
How to do it…
How it works…
There's more…
See also…
Using Flash Builder 4 and below to develop Android applications
How to do it…
How it works…
See also…
Enabling Powerflasher FDT 4.1 to access Flex Mobile SDKs
How to do it…
How it works…
See also…
Using Powerflasher FDT 4.1 and below to develop Android applications
How to do it…
How it works…
See also…
Converting a standard Flex project to a Flex Mobile project
How to do it…
How it works…
There's more…
Configuring the AIR SDK to package AIR for Android applications on Windows
How to do it…
How it works…
See also…
Configuring the AIR SDK to package AIR for Android applications on Linux or Mac OS
How to do it…
How it works…
See also…
2. Interaction Experience: Multitouch, Gestures, and Other Input
Introduction
Detecting supported device input types
How to do it...
How it works...
Detecting whether or not a device supports multitouch
How to do it...
How it works...
There's more...
Verifying specific gesture support for common interactions
How to do it...
How it works...
There's more...
Using gestures to zoom a display object
How to do it...
How it works...
There's more...
See also...
Using gestures to pan a display object
How to do it...
How it works...
There's more...
See also...
Using gestures to swipe a display object
How to do it...
How it works...
There's more...
See also...
Using gestures to rotate a display object
How to do it...
How it works...
There's more...
See also...
Accessing raw touchpoint data
How to do it...
How it works...
There's more...
Creating a custom gesture based upon touchPoint data
How to do it...
How it works...
There's more...
Emulating the Android long-press interaction
How to do it...
How it works...
There's more...
Invoking the virtual keyboard programmatically
How to do it...
How it works...
There's more...
Responding to Android soft-key interactions
How to do it...
How it works...
There's more...
Responding to trackball and D-Pad events
How to do it...
How it works...
There's more...
3. Movement through Space: Accelerometer and Geolocation Sensors
Introduction
Detecting whether or not an Android device supports the accelerometer
How to do it...
How it works...
Detecting Android device movement in 3D space
How to do it...
How it works...
There's more...
Adjusting the accelerometer sensor update interval
How to do it...
How it works...
There's more...
Updating display object position through accelerometer events
How to do it...
How it works...
Switching between portrait and landscape based upon device tilt
How to do it...
How it works...
There's more...
See also…
Detecting whether or not a device supports a geolocation sensor
How to do it...
How it works...
See also…
How to do it...
How it works...
There's more...
See also…
Retrieving device geolocation sensor data
How to do it...
How it works...
Adjusting the geolocation sensor update interval
How to do it...
How it works...
There's more...
Retrieving map data through geolocation coordinates
Getting ready...
How to do it...
How it works...
There's more...
4. Visual and Audio Input: Camera and Microphone Access
Introduction
Detecting camera and microphone support
How to do it...
How it works...
There's more...
Using the traditional camera API to save a captured image
How to do it...
How it works...
There's more...
See also...
Using the Mobile CameraUI API to save a captured photograph
How to do it...
How it works...
There's more...
See also...
Using the Mobile CameraUI API to save a captured video
How to do it...
How it works...
There's more...
See also...
Using the device microphone to monitor audio sample data
How to do it...
How it works...
What do all these properties mean?
See also...
Recording Microphone Audio Sample Data
How to do it...
How it works...
See also...
5. Rich Media Presentation: Working with Images, Video, and Audio
Introduction
Loading photographs from the device cameraRoll
How to do it…
How it works…
There's more…
Applying Pixel Bender Shader effects to loaded images
Getting ready…
How to do it…
How it works…
There's more…
Playing video files from the local filesystem or over HTTP
Getting ready…
How to do it…
How it works…
There's more…
Playing remote video streams over RTMP
Getting ready…
How to do it…
How it works…
There's more…
Playing audio files from the local filesystem or over HTTP
How to do it…
How it works…
There's more…
Generating an audio spectrum visualizer
How to do it…
How it works…
There's more…
Generating audio tones for your application
How to do it…
How it works…
There's more…
6. Structural Adaptation: Handling Device Layout and Scaling
Introduction
Detecting useable screen bounds and resolution
How to do it…
How it works…
Detecting screen orientation changes
How to do it…
How it works…
There's more…
See also…
Scaling visual elements across devices at runtime
How to do it…
How it works…
Scaling visual elements based on stage resize in Flash Professional CS5.5
How to do it…
How it works…
There's more…
Employing the Project panel in Flash Professional CS5.5
How to do it…
How it works…
There's more…
Freezing a Flex application to landscape or portrait mode
How to do it…
How it works…
There's more…
See also…
Defining a blank Flex mobile application
How to do it…
How it works…
There's more…
Defining a Flex mobile view-based application
How to do it…
How it works…
Defining a Flex mobile tabbed application with multiple sections
How to do it…
How it works…
There's more…
Using a splash screen within a Flex mobile application
How to do it…
How it works…
Configuring the ActionBar within a Flex mobile project for use with ViewNavigator
How to do it…
How it works…
There's more…
Hiding the ActionBar control in a single view for a Flex mobile project
How to do it…
How it works…
There's more…
7. Native Interaction: StageWebView and URI Handlers
Introduction
Opening a website in the default Android browser
How to do it...
How it works...
There's more...
Rendering a website within an application
How to do it...
How it works...
There's more...
Managing the StageWebView history
How to do it...
How it works...
Using StageWebView to load ads using ActionScript
How to do it...
How it works...
There's more...
Using StageWebView to load ads within a Flex mobile project
Getting ready…
How to do it...
Creating the HTML file to display our ads
Creating the MXML files for our ViewNavigatorApplication
Generating the ActionScript code to tie it all together
How it works...
There's more...
Making a phone call from an application
How to do it...
How it works...
Sending a text message from an application
How to do it...
How it works...
Invoking Google maps from an application
How to do it...
How it works...
There's more...
Invoking the Android Market using application URIs
How to do it...
How it works...
Sending e-mail from an application
How to do it...
How it works...
There's more...
8. Abundant Access: File System and Local Database
Introduction
Opening a local file from device storage
How to do it...
How it works...
There's more...
Saving a file to device storage
How to do it...
How it works...
There's more...
Saving data across sessions through local shared object
How to do it...
How it works...
There's more...
Storing application state automatically by using Flex
How to do it...
How it works...
Creating a local SQLite database
How to do it...
How it works...
Providing a default application database
Getting ready...
How to do it...
How it works...
Automating database tasks with FlexORM
Getting ready...
How to do it...
How it works...
There is more...
9. Manifest Assurance: Security and Android Permissions
Introduction
Setting application permissions with the Android Manifest file
How to do it...
Using Flash Professional:
Using Flash Builder:
Using a simple text editor:
How it works...
Preventing the device screen from dimming
How to do it...
How it works...
See also...
Establishing Android custom URI schemes
How to do it...
How it works...
See also...
Anticipating Android Compatibility Filtering
How to do it...
When using features of the Android camera:
When using features of the Android microphone:
When using the Geolocation Sensor:
When using the Accelerometer Sensor:
How it works...
See also...
Instructing an application to be installed to Device SDCard
How to do it...
How it works...
See also...
Encrypting a local SQLite database
Getting ready...
Instructions to include a .SWC package into a Flash Builder project
Instructions to include a .SWC package into a Flash Professional project
How to do it...
How it works...
See also...
10. Avoiding Problems: Debugging and Resource Considerations
Introduction
Debugging an application with Flash Professional
Getting ready…
How to do it...
How it works...
See also...
Debugging an application with Flash Builder
How to do it…
How it works...
See also...
Rendering application elements using the device GPU
How to do it...
How it works...
There's more...
Automating application shutdown upon device interruption events
How to do it...
How it works...
See also…
Exiting your application with the device back button
How to do it...
How it works...
There's more…
See also…
Monitoring memory usage and frame rate in an application
How to do it...
How it works...
There's more...
See also...
11. Final Considerations: Application Compilation and Distribution
Introduction
Generating a code-signing certificate using Flash Professional
How to do it...
How it works...
Generating a code-signing certificate using Flash Builder
How to do it...
How it works...
Generating a code-signing certificate using FDT
How to do it...
How it works...
Generating a code-signing certificate using the AIR Developer Tool
Getting ready…
How to do it...
How it works...
Preparing icon files for distribution
How to do it...
Using Flash Professional CS5.5
Direct modification of the AIR descriptor file
How it works...
There's more...
Compiling an application using Flash Professional
How to do it...
How it works...
Compiling an application using Flash Builder
How to do it...
How it works...
Compiling an application when using FDT
How to do it...
Using a mobile project template
Using ANT
Using ADT through CLI
How it works...
Compiling an application using the AIR Developer Tool
How to do it...
How it works...
See also…
Submitting an application to the Android Market
Getting ready...
How to do it...
How it works...
There's more...
Index
Flash Development for Android Cookbook
Flash Development for Android Cookbook
Copyright © 2011 Packt Publishing
All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews.
Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the Joseph Labrecque, nor Packt Publishing, and its dealers and distributors will be held liable for any damages caused or alleged to be caused directly or indirectly by this book.
Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information.
First published: June 2011
Production Reference: 1100611
Published by Packt Publishing Ltd.
32 Lincoln Road
Olton
Birmingham, B27 6PA, UK.
ISBN 978-1-849691-42-0
www.packtpub.com
Cover Image by Ed Maclean (<[email protected]>)
Credits
Author
Joseph Labrecque
Reviewers
Fabio Biondi
Sean Moore
Leonardo Risuleo
Acquisition Editor
Wilson D'souza
Development Editor
Neha Mallik
Technical Editors
Shreerang Deshpande
Merwine Machado
Project Coordinator
Jovita Pinto
Proofreader
Aaron Nash
Indexer
Monica Ajmera
Production Coordinator
Alwin Roy
Cover Work
Alwin Roy
Foreword
Mobile is as HOT as a Habanero Chili!
It's taken a few years, but mobile and devices are finally hot. How hot? Like biting into a freshly ripe, raw, Habanero chili kind-a-HOT. Can you taste the virtual heat on your virtual tongue yet?
Yowza! The point I'm trying to get across is this. The broader mobile and device industry has finally gone mainstream. Why else would you be reading this right now? Intellectual curiosity? Well, maybe, but I'm wagering much more likely, because you want to learn about the amazing and wonderful world of mobile, today!
Yes, folks, I think you'll agree almost 100 percent that mobile is finally hip, cool, sleek, and dare I say it: glitzy. Unless you been living in some proverbial cave for the last few years, you know this for a fact! Like it or not, our modern societies now operate in a world dominated with internet connected small-screen pocket-sized Smartphone, e-readers, mid-screen sized Tablets, and large screen digital TVs, and countless other gadgets and gizmos in all their bountiful and lavish form factors. In fact, with all these devices and platforms, recently, it occurs to me as if we're all at some gigantic virtual party, and there's one huge smorgasbord on the dinner table for developers to dig into. Of course, I'm sure you'll agree the Android dish is one of the main courses you are eyeing to gobble down, first, right?
As an early adopter to the mobile industry, and one of the brave souls who pioneered work with Flash and other early mobile technologies on various mobile and device platforms over the years, it gives me great satisfaction to see what I had been advocating has finally come to fruition. Yes! That proverbial egg timer has finally rung, and the apps are flying out of the oven. Careful, boy are they RED HOT!
It strikes me that with all the excitement in developer kitchen these days, it feels a bit like the explosive growth of the early days of the World Wide Web back in the 90's. There are some changes now, though. One of the big changes now, is that we now have all these form factors with various screens instead of those clunky desktop PCs and CRTs!
Smart phones and other devices have turned our cell phones into our pocket sized computers. Yes, I said computers! Like it or not, for much of the modern world, our personal computers of today, now fit in our pockets, and they are part of our daily lives and routines as we move through the world.
Mmmmmm...Yummy! Pocket-sized Android device treats for desert, anyone?!
Android with a dash of Flash
So, how does Adobe fit into all this? Well, Adobe has been hard at work over the past few years refining their suite of tools and products to help with the growing challenge of allowing designers and developers to design, develop, and deploy compelling mobile and device experiences, faster, better, and easier. There is no shortage of exciting and compelling stream of news and innovations coming from Adobe's Engineering 'kitchen' these days as I write this passage!
Adobe Flash, Flex, and AIR have been retooled, retrofitted, and enhanced to make it significantly easier for existing Flash and Flex professionals to start leveraging Adobe Creative Suite and other tools to target not only Android but also OS, BlackBerry Tablet OS, and other mobile and device platforms soon to come. To me, the Flash Platform is like a fork utensil. When it's appropriate, by all means use it to your advantage, especially when trying to get food into your mouth!
The general idea of write once, tweak, and deploy to as many supported targets as possible is a very real; and attainable goal when you look at what Adobe can provide these days. Whether you're a long-time Flash veteran new to the mobile aspects developing for Android, or whether you're a seasoned native Android developer curious about the Flash Platform; you'll find recipes to help quench your thirst and fill your belly. All you have to do is give it a try and see the results!
This book will help you do that! So What's Cooking
in this Book?
As a famous chef might say in his famous cooking shows in the US, BAM
!
In this title, Joseph takes you through some recipes on how to leverage your existing Flash and ActionScript skills to build for Android Platform. I have gotten the unique pleasure of seeing some of the early material. Strap on your coding apron and get ready to bake some code recipes very soon, my fellow readers!
In this title, Joseph will explain more than one hundred examples about how to dealing with things like multi-touch and gesture input, accessing GPS and location features, leveraging the accelerometer, as well as tying into audio and visual inputs such as camera and microphone on mobile devices. He'll also cover working with media such as images, video and audio, and handling device layout and scaling, plus more tasty morsels of mobile development goodness using ActionScript for AIR using Flash and Flex based mobile applications on the Android Platform. Although this 'cookbook' assumes you know at least some ActionScript and Flash basics, most will be able to pick up much of the code and start running with it, given it's in a nice, juicy, step by step, recipe style format. You should be able to apply these code snacks to your favorite designer or developer workflow whether you're using Flash Builder, Flash IDE, or any other piece of popular Flash authoring environment out there.
Well, are you hungry yet? Yes? Good! Well, time to get your inner-baker on, and cook some flashy applications! After all, you have all those millions of hungry Android consumers to feed with your tasty, finger licking good, creations. The oven is pre-heated, now. Joseph's waiting for you in his coding kitchen. He's got lots of little snacks for you to try out. Let's meet him in his kitchen and start cooking up some Android based recipes using ActionScript, shall we?
P.S. Sorry if I made you physically hungry or thirsty while reading this foreword. Why not grab a beer, or a red bull.
Also, why not put in that phone order in for pizza delivery? Now's the perfect time before you dig in!
Bon Appétit and happy coding!
Scott Janousek,
Mobile and Device Technologist,
Gadget Geek and CEO/Founder of Hooken Mobile
About the Author
Joseph Labrecque is primarily employed by the University of Denver as a senior interactive software developer specializing in the Adobe Flash Platform, where he produces innovative academic toolsets for both traditional desktop environments and emerging mobile spaces. Alongside this principal role, he often serves as adjunct faculty, communicating upon a variety of Flash Platform solutions and general web design and development subjects.
In addition to his accomplishments in higher education, Joseph is the proprietor of Fractured Vision Media, LLC; a digital media production company, technical consultancy, and distribution vehicle for his creative works. He is founder and sole abiding member of the dark ambient recording project 'An Early Morning Letter, Displaced' whose releases have received international award nominations and underground acclaim.
Joseph has contributed to a number of respected community publications as an article writer and video tutorialist. He regularly speaks at user group meetings and industry conferences such as Adobe MAX, FITC, and D2WC. In 2010, he received an Adobe Impact Award in recognition of his outstanding contribution to the education community. He has served as an Adobe Education Leader since 2008 and is also a 2011 Adobe Community Professional.
Visit him on the web at http://memoryspiral.com/.
Special thanks to my wife Leslie, and to our daughters; Paige and Lily, for bearing with me during the production of this work.
About the Reviewers
Fabio Biondi is a freelancer living in the north east of Italy. Since 2003 he deals almost exclusively with the Adobe Flash Platform technologies.
He is an Adobe Certified Instructor (ACI) in Flex, AIR, Flash Professional, Flash Catalyst, and FlashLite (ACE) and lately he has devoted time and resources to the development of mobile and social networking applications.
Fabio runs a blog (www.fabiobiondi.com/blog) and a YouTube Channel (http://www.youtube.com/user/BiondiFabio) where he provides free tutorials, scripts, and news about the latest Adobe Flash Platform technologies.
I would like to thank my girlfriend Lisa, for always supporting and encouraging me, and the Packt Publishing guys, Jovita and Wilson, for the opportunity they have given to me.
Sean Moore has been developing web applications since 1998. He's been passionate about Flash and ActionScript development for over eight years and working with Flex for over four years. He was chosen to be a Flex Developer Community Champion and an Adobe Community Professional by Adobe for his hard work and dedication to the Flash Platform Community. Sean is a certified Flash developer and also a certified Flex developer. Sean specializes in the development of Adobe AIR applications. He is the creator of the ActionScript Cheatsheets. Sean has provided development and consulting services for 2Advanced, Adobe Consulting, and Universal Mind. He's also worked with many small businesses on Flash, Flex, and AIR applications. Sean has written Flex and AIR articles for Adobe, O'Reilly, and Flash Magazine. He's provided technical authoring for Manning Publications, Addison Wesley and O'Reilly. Sean has also given presentations at various user groups on best practices for Flex development. Sean is also very interested in BCI technology and Arduino development.
I'd like to thank the author for doing such a great job and also asking me to be a technical reviewer.
Leonardo Risuleo is a designer and developer with several years experience in mobile, new media and user experience. He's a highly dedicated professional and passionate about what he does. He started back in 2003 and during these