更改AS3 UILoader组件注册点

Question

我想用UILoader组件加载很多照片，而且我必须更改注册点，我该怎么做呢？有没有什么代码可以解决这个问题？

import flash.utils.Timer;
import flash.events.TimerEvent;
import flash.events.MouseEvent;
import flash.events.Event;
import fl.containers.UILoader;
import flash.text.TextField;
import flash.display.SimpleButton;
import fl.transitions.Tween;
import fl.transitions.TweenEvent;
import fl.transitions.easing.*;
stage.colorCorrection = ColorCorrection.ON;

var myImage:String = "smallWildlife/00.jpg";
var request:URLRequest = new URLRequest(myImage);
uiLoader.addEventListener(Event.COMPLETE, completeHandler);
uiLoader.addEventListener(ProgressEvent.PROGRESS, progressHandler);
uiLoader.load(request);

function progressHandler(event:ProgressEvent):void
{

status_txt.text = "Percentage Loaded:" + Math.round(event.target.percentLoaded);
}

function completeHandler(event:Event):void
{   
uiLoader.x = stage.stageWidth/6 - uiLoader.content.width/6;
uiLoader.y = stage.stageHeight/100 - uiLoader.content.height/700;
new Tween(uiLoader,"rotationX",Elastic.easeOut,90,0,4,true);
}

next_btn.addEventListener(MouseEvent.CLICK, nextImage);

//variable is a container that holds some value...;
var imageNumber:Number = 0;

function checkNumber():void
{
next_btn.visible = true;
back_btn.visible = true;
//If the imageNumber is = 58, then do something...
if (imageNumber == 58)
{
    trace(imageNumber);
    next_btn.visible = false;
}
//if the imageNumber is = 1, then don't show the back button
if (imageNumber == 0)
{
    trace(imageNumber);
        back_btn.visible = false;
}
}
checkNumber();

function nextImage(evtObj:MouseEvent):void
{
//Adding to the current value +1
imageNumber++;
uiLoader.source = "smallWildlife/0" + imageNumber + ".jpg";
checkNumber();
}

back_btn.addEventListener(MouseEvent.CLICK, backImage);

function backImage(evtObj:MouseEvent):void
{
//Subtract 1 from the current value
imageNumber--;
uiLoader.source = "smallWildlife/0" + imageNumber + ".jpg";
checkNumber();
}

stop();

请帮帮我!我需要把我的画廊放在中间。

Answer 1

首先，将一个UILoader组件拖到舞台上，然后将其命名为"uiLoader“。

package {

    import fl.containers.*;
    import fl.transitions.*;
    import fl.transitions.easing.*;
    import flash.display.*;
    import flash.events.*;
    import flash.net.URLRequest;

    public class Main extends Sprite {

    private var spr:Sprite;

    // Your URL here
    private var url:String = "http://joanmiro.com/wp-content/uploads/2009/05/joanmiro1.jpg";

    public function
    Main() {
        var request:URLRequest = new URLRequest( url );

        uiLoader.addEventListener( Event.COMPLETE, completeHandler );
        uiLoader.load( request );

        spr = new Sprite();

        // Place spr anywhere on the stage
        spr.x = stage.stageWidth / 2;
        spr.y = stage.stageHeight / 2;
        spr.addChild( uiLoader );

        addChild( spr );
    }

    private function
    completeHandler( e:Event ):void {
        // Center uiLoader in spr
        uiLoader.x = - uiLoader.width / 2;
        uiLoader.y = - uiLoader.height / 2;
        new Tween( spr, "rotation", Elastic.easeOut, 1080, 0, 12, true );
    }
    }
}