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This is a presentation I gave at FlashTent.org
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Developing AIR for Mobileusing Flash Professional CS5.5
@ChrisGriffith
These opinions and thoughts are my own, and may or may not reflect the opinions of the company that I work for.
Disclaimer
Mobile is Everywhere
Context
mobile vs. desktop
Orientation
Touch
44px
Touch
The average fingertip is 3x larger than the hand cursor
Make your buttons 3x larger
Then make them even larger
With fingers, come hands…
Ergonomics
How will they touch it?• One Thumb?• Two Thumbs?• Pointer Finger?
Device Resolution PPI Physical
Nexus One/ HTC Incredible 800x480 254 3.7’
HTC EVO/ HTC Desire HD 800x480 217 4.3’
Droid/ Droid 2 854x480 265 3.7’
Droid X 854x480 240 4.3’
Samsung Galaxy S Vibrant 800x480 232 4.0’
iPhone 3GS and lower 480x320 163 3.5’
iPhone 4 / iPhone 4S 960x640 326 3.5’
iPad 1024x768 132 9.7’
Galaxy Tab 1024x600 170 7’
Data based on respective products published technical specifications
Pixels Per Inch (PPI)
Adobe AIR allows designers and developers by providing a consistent and flexible development environment for the delivery of applications across devices and platforms. It supports Android™, BlackBerry Tablet OS, and iOS mobile operating.
What is Adobe AIR?
• GeoLocation• Accelerometer• Camera• Multitouch / Gesture Support• Screen Orientation• Microphone• GPU Acceleration• SQLite DB• And more…
• No Native Widgets• No Access to Contacts• Limited SMS Support
AIR for Mobile Overview
Get the Android SDK: http://developer.android.com/sdk
ADB – Android Device Debugger installs apps on your device
DDMS - Dalvik Debug Monitor for desktop simulation.
Download AIR 3.1 sdk http://www.adobe.com/products/air/
Get AIR for Android runtime .apk installed via Android Market
Creating an Android App: Setup
Get the iOS SDK: http://developer.apple.com/programs/ios/
Allows you to create and install apps on your device
$99 per year
Download AIR 3.1 sdk http://www.adobe.com/products/air/
Creating an iOS App: Setup
Updating AIR SDK
www.swfgeek.net/2011/09/26/targeting-flash-player-11-rc1-air-3-rc1-in-flash-professional-cs5-5/
Emulator Device
Development Environments
Accelerometer
var accel:Accelerometer = new Accelerometer();accel.addEventListener(AccelerometerEvent.UPDATE, update);
function update(e:AccelerometerEvent):void{
e.accelerationX;e.accelerationY;e.accelerationZ;
}
Gestures
cell.addEventListener(TransformGestureEvent.GESTURE_ZOOM, onZoom);function onZoom(e:TransformGestureEvent):void{
cell.scaleX *= e.scaleX;cell.scaleY = cell.scaleX;
}
cell.addEventListener(TransformGestureEvent.GESTURE_ROTATE, onRotate);function onRotate(e:TransformGestureEvent):void{
cell.rotation += e.rotation;}
Geolocation
var geo: Geolocation;
if (Geolocation.isSupported) { geo = new Geolocation(); geo.addEventListener(GeolocationEvent.UPDATE, updateHandler); geo.setRequestedUpdateInterval(10000);} else { log.text = "Geolocation feature not supported"; }
Hardware Keys
stage.addEventListener(KeyboardEvent.KEY_DOWN, onKeyDown, false, 0, true);
function onKeyDown(event:KeyboardEvent):void { //Back Key if (event.keyCode == Keyboard.BACK) { event.preventDefault(); // to kill event from running default behavior //do your own back stuff }
//Menu Key if (event.keyCode == Keyboard.MENU) { event.preventDefault(); // to kill event from running default behavior //do your own back stuff }}
Orientation
stage.scaleMode = StageScaleMode.NO_SCALE;
stage.align = StageAlign.TOP_LEFT;
function setPosition():void
{
vidHolder.x = stageWidth/2 - vidHolder.width/2;
vidHolder.y = stageHeight/2 - vidHolder.height/2;
//If the layout is vertical
if (stage.stageWidth < stage.stageHeight)
{
//Adjust graphics
}
}
setPosition();
stage.addEventListener(Event.RESIZE, resizeLayout);
function resizeLayout(e:Event):void
{
setPosition();
}
SQLite Support
http://www.dehats.com/drupal/?q=node/58
StageWebView
• You get a browser in your Flash app!
• Good solution for– Maps– Facebook Connect– Remote Content
StageText
StageVideo
Captive Runtime
Developers now have more flexibility with their app packaging options and can automatically package AIR 3 with their Android™, iOS app into a single installation file that includes the app and a bundled version of the AIR runtime.
ANEs
Use native code to take advantage of the same platform- and device-specific native capabilities and APIs available to native apps, with easy integration into AIR applications.
Limitations
No Native Controls
http://blog.kevinhoyt.com/2010/05/some-flash-android-components/
No Access to Contacts
Building Applications
Don’t Fear the Timeline
Publishing - Android
Publishing - Android
Publishing - iOS
Publishing - iOS
To the Market…
Development Guidelines
Graphics
• Consider bitmaps over vectors• Keep bitmaps as small as possible• Minimize number of vectors• Test your animations with different qualities of Stage
Avoid, if possible:• Filters• Blend modes• Transparency• Perspective distortion
GPU Acceleration
Set rendering mode to GPU
Make sure cacheAsBitmap is set to true on your DisplayObject like this:square.cacheAsBitmap = true;
http://blogs.adobe.com/cantrell/archives/2010/10/gpu-rendering-in-adobe-air-for-android.html
GPU Acceleration
cacheAsBitmapMatrix property
http://blog.theflashblog.com/?p=2386
Make sure to assign a Matrix to the cacheAsBitmapMatrix property on your DisplayObject like this:square.cacheAsBitmapMatrix = new Matrix();
Text
Use opaque background over transparency
Avoid TLF Test different anti-aliasing techniques
(animation, bitmap text...) Avoid frequently-updated text Use appendText vs. text +=
Display Objects
Use the appropriate type of display object
Objects that aren’t interactive, use Shape();trace(getSize(new Shape()));// output: 216
Interactive but no timeline? Use Sprite();trace(getSize(new Sprite()));// output: 396
Need animation? Use Movieclip();trace(getSize(new MovieClip()));// output: 416
Freeing Movieclips
Alpha? RemoveChild? Visible?
Even when removed from the display list, the movie clip still dispatches the Event.ENTER_FRAME event.
runningBoy.addEventListener(Event.REMOVED_FROM_STAGE, deactivate);
function deactivate(e:Event):void{
e.currentTarget.removeEventListener(Event.ENTER_FRAME, handleMovement);
e.currentTarget.stop();
}
Resources
Thanks!
@chrisgriffith
http://chrisgriffith.wordpress.com/