复制BitmapData从mx：Image [英] Copy BitmapData From mx:Image

问题描述

如何从mx：image组件复制或复制bitmapdata？

How can I copy or duplicate the bitmapdata from a mx:image component?

我需要在我的应用程序的多个屏幕中显示相同的图像，想要多次下载图片。

I need to display the same image in multiple screens of my application and don't want to have to download the image multiple times.

我可以使用urlrequest将图片下载为位图并复制，但我喜欢的方式，你可以只是设置图像组件的来源。

I could just use a urlrequest to download the image as a bitmap and copy that but I like the way you can can just set the source of the image component.

推荐答案

图像 c $ c> SWFLoader 其中包含内容属性，其将包含已加载的 Bitmap 对象。等待图片加载，将内容转换为Bitmap并读取其 bitmapData

Image extends SWFLoader which has a content property that will contain the Bitmap object that was loaded. Wait for the image to load, cast the content to Bitmap and read its bitmapData

public function imageLoadCompleteHandler(e:Event):void
{
    var bitmap:Bitmap = img.content as Bitmap;
    if(bitmap == null) {
        trace("loaded content is not an image");
        return;
    }
    bmpData = bitmap.bitmapData;
    //hurray..!
}

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