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这是我创建的一些代码作为另一个问题的答案。它从库中拉出一个库项目，并以编程方式将其放在舞台上。没什么大不了的，除了为了让屏幕上显示的图像真正更新，我必须先 removeChild() 然后再 addChild() 它回来。还有其他方法可以强制屏幕重绘吗？

var currentImage:int = 1;
var MAX_IMAGES:int = 3;

MC_prevButton.addEventListener(MouseEvent.CLICK, goBack);
MC_nextButton.addEventListener(MouseEvent.CLICK, goForward);

var imageClip:MovieClip = new Image_1();
var thumbClip:MovieClip = new Thumb_1();

imageClip.x = thumbClip.x = stage.stageWidth/2;
imageClip.y = thumbClip.y = stage.stageHeight/2;



addChildAt(thumbClip, 0);
addChildAt(imageClip, 1);

setImages(currentImage);

function goBack(event:MouseEvent):void {
    if (currentImage) currentImage--;
    setImages(currentImage);
}

function goForward(event:MouseEvent):void {
    if (currentImage < MAX_IMAGES) currentImage++;
    setImages(currentImage);
}

function setImages(imageNumber){
    trace("Setting image number: " + imageNumber);

    var LibraryImage:Class = getDefinitionByName("Image_" + imageNumber) as Class;
    if (LibraryImage){
        removeChild(imageClip);
        imageClip = new LibraryImage();
        addChildAt(imageClip, 1);
    }
    var LibraryThumb:Class = getDefinitionByName("Thumb_" + imageNumber) as Class;
    if (LibraryThumb){
        removeChild(thumbClip);
        thumbClip = new LibraryThumb();
        addChildAt(thumbClip, 0);
    }

    imageClip.x = thumbClip.x = stage.stageWidth/2;
    imageClip.y = thumbClip.y = stage.stageHeight/2;
}

请注意，在此示例中，此代码位于时间轴的第 1 帧，并且它是一个 1 帧 FLA 文件

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1 回答 1

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尝试在 forward 和 back 方法的末尾调用 updateAfterEvent() ：

function goForward(event:MouseEvent):void {
    if (currentImage < MAX_IMAGES) currentImage++;
    setImages(currentImage);
    event.updateAfterEvent();
}
于 2011-09-01T14:53:35.943 回答