我的班级似乎无法进入舞台......几乎就像它不想达到一样。我不知道什么一直出错。这是我现在拥有的课程:
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);
}
}
}
这就是我在我的 swf 文件中所做的:
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();
问题是将 iLoader 添加到舞台。当我这样做时,我收到错误:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at gallery/onLoaderReady()
为什么我无法访问 Stage?或者我想要达到的目标是完全错误的,我应该以另一种方式感知舞台吗?我真的希望你能帮助我,非常感谢提前!:)