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階段似乎是從我的班級無法訪問..幾乎就像它不想被達成。我不知道會出現什麼問題。這是類,因爲我有它現在:添加裝載機從階段
package {
import flash.events.*;
import flash.display.*;
import flash.net.*;
public class gallery extends Sprite{
private var imgPath:String = 'images/';
private var imgCurrent:int = 0;
private var images:Array = new Array();
private var iLoader:Loader;
function gallery()
{
this.addEventListener(Event.ADDED_TO_STAGE, onAddedToStage);
}
private function onAddedToStage(e:Event):void {
this.removeEventListener(Event.ADDED_TO_STAGE, onAddedToStage);
sayStage();
}
public function sayStage():void {
trace(this.stage);
}
public function setImgs(val:Array):void
{
for (var index:String in val){
images[index] = val[index];
}
}
public function getImgs():void
{
for (var index:String in images){
trace(index + ':' + images[index] + ';');
}
}
public function loadImg():void{
iLoader = new Loader();
iLoader.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, onProgressStatus);
iLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, onLoaderReady);
var fileRequest:URLRequest = new URLRequest(imgPath+'testimg.JPG');
iLoader.load(fileRequest);
}
public function onProgressStatus(e:ProgressEvent) {
trace(e.bytesLoaded, e.bytesTotal);
}
public function onLoaderReady(e:Event) {
stage.addChild(iLoader); // error!
}
public function updateImgCurrent(val:int):void
{
imgCurrent = imgCurrent + val;
}
public function getImgCurrent():int
{
return(imgCurrent);
}
}
}
,這是我在我的SWF文件做:
var gal:gallery = new gallery();
var imagesGallery:Array = new Array();
imagesGallery.push('testimg.JPG');
imagesGallery.push('img2.JPG');
imagesGallery.push('img3.JPG');
gal.setImgs(imagesGallery);
gal.loadImg();
的問題是增加iLoader到舞臺。當我這樣做,我收到錯誤:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at gallery/onLoaderReady()
爲什麼我不能訪問舞臺?或者,我想要達到什麼樣的目的,並且我是否應該以另一種方式來理解舞臺?我真的希望你能提前幫助我和很多很多的感謝! :)
this.stage.addChild()會導致同樣的錯誤 – 2013-03-21 00:37:27