Paste Description for Henke37
The workaround for embedding swf files in flex.
- Henke37
- Tuesday, July 1st, 2008 at 4:04:02pm MDT
- package HTools {
- import flash.display.Sprite;
- import flash.display.MovieClip;
- import flash.display.Loader;
- import flash.events.Event;
- import flash.utils.ByteArray;
- import mx.core.ByteArrayAsset;
- public class SwfLoader extends Sprite {
- /**
- * Swf loader class, wraps the loading of a bytearray from an embeded symbol
- * Copyright Henke37 2008
- * Just give credit when it's due.
- */
- /*
- Here is how to use this class:
- # Create the fla
- # Set the publish settings of the fla to NOT automaticaly declare instances
- # Set and write the document class for the FLA. It must be declared public!
- # Publish the fla to get the swf
- # Embed the swf, but mark it as having the mimeType "application/octet-stream".
- # Create an asset ByteArray by calling new on the asset property
- # Create an instance of the Swfloader class (that's this class),
- passing the ByteArray from the previous step
- # Write an even handler for the Event.COMPLETE event that is fired from the loader.
- In that, you can access the content property of this class.
- Do not forget to cast the object to the document class
- # Add the event listener to the loader. DO NOT idle with this,
- do it ASAP, like directly after creating it.
- Otherwise you might miss the event.
- The gotcha list:
- * Not waiting for the Event.COMPLETE event before using the content property
- * Not declaring the document class to be public
- * Not marking the embed tag with the proper mimeType
- * Forgeting to store the content object in a variable with type of the Document class
- * Not declaring the instances explitly in the document class,
- preventing Flex from finding the properties for them
- Also, try to keep the documet class small since it will be embeded twice.
- */
- private var loader:Loader;
- private var data:ByteArray;
- public function SwfLoader(data:ByteArray) {
- super();
- loader=new Loader();
- loader.loadBytes(data);
- addEventListener(Event.ENTER_FRAME,onEnterFrame,false,0,true);
- }
- public function get content ():MovieClip {
- if(loader.content) {
- return MovieClip(loader.content);
- } else {
- return null;
- }
- }
- private function onEnterFrame(e:Event):void {
- if(loader.content) {
- dispatchEvent(new Event(Event.COMPLETE));
- removeEventListener(Event.ENTER_FRAME,onEnterFrame);
- }
- }
- }
- }
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