AS3.0 关于用URLLoader加载外部图片
用URLLoader以二进制的方式加载外部图片,获得URLLoader.data的ByteArray数据,再用Loader去加载,这时Loader.content就是一个bitmap了。
package {
import flash.display.Bitmap;
import flash.display.Loader;
import flash.display.MovieClip;
import flash.display.Sprite;
import flash.events.Event;
import flash.filters.ConvolutionFilter;
import flash.net.URLLoader;
import flash.net.URLRequest;
import flash.net.URLLoaderDataFormat;
import flash.utils.ByteArray;
public class Main extends Sprite{
private var loader:URLLoader;
public function Main():void
{
loadImage("image.jpg");
}
private function loadImage(_path:String ):void
{
loader = new URLLoader;
loader.dataFormat=URLLoaderDataFormat.BINARY ;
loader.addEventListener (Event.COMPLETE , onImageLoaded);
loader.load(new URLRequest (_path));
}
private function onImageLoaded(e:Event):void
{
var _ba:ByteArray = e.target.data as ByteArray;
var _l:Loader = new Loader;
_l.contentLoaderInfo.addEventListener (Event.COMPLETE, onBytesLoaded);
_l.loadBytes(_ba);
loader.removeEventListener (Event.COMPLETE , onImageLoaded);
loader = null;
}
private function onBytesLoaded(e:Event):void
{
var _bitmap:Bitmap = e.target.content as Bitmap;
trace(_bitmap.width, _bitmap.height );
addChild (_bitmap );
e.target.loader.contentLoaderInfo.removeEventListener (Event.COMPLETE, onBytesLoaded);
}
}
}