ActionScript 3 在循环中更改位图源

Question

我有一个名为 RenderingImage 的 Class，它是一个像这样的位图：

[Embed(source="images/thumb.png")]
var RenderingImage:Class;

我想做的是循环更改位图图像。

for (var i:String in homes) 
{
    var renderingImg:Bitmap = new RenderingImage();
    renderingImg.y = 50 + spaceY;
    renderingImg.x = 0 + spaceX;
    renderingImg.width = 320;
    renderingImg.height = 185;
    home.addChild(renderingImg);
}

在这个循环中定义 RenderingImage Class 时是否可以更改我放置的源代码？

Answer 1

最好不要将图像资源嵌入到项目中。无论您如何存储图像，您只需在循环时指向新图像。

var images:Array = [
    "https://cdn1.iconfinder.com/data/icons/freeline/32/home_house_real_estate-64.png",
    "https://cdn2.iconfinder.com/data/icons/cute-tech-icon-set-1/512/Home-64.png",
    "https://cdn3.iconfinder.com/data/icons/watchify-v1-0-80px/80/home-80px-64.png"
]

for (var i:int = 0; i < images.length; i++) {
    var house:Loader = new Loader();
    house.load(new URLRequest(images[i]));
    addChild(house)
    house.x = 65*i;
}

或者，如果您只想使用显式 Bitmap 对象，则可以在加载后引用已加载的 BitmapData。

import flash.events.Event;
import flash.display.Loader;
import flash.display.Bitmap;

var images:Array = [
    "https://cdn1.iconfinder.com/data/icons/freeline/32/home_house_real_estate-64.png",
    "https://cdn2.iconfinder.com/data/icons/cute-tech-icon-set-1/512/Home-64.png",
    "https://cdn3.iconfinder.com/data/icons/watchify-v1-0-80px/80/home-80px-64.png"
]
var bitmaps:Array = [];
var loadedCount:int = 0;

for (var i:int = 0; i < images.length; i++) {
    var loader:Loader = new Loader();
    loader.load(new URLRequest(images[i]));
    loader.contentLoaderInfo.addEventListener(Event.COMPLETE, loaded);
}

function loaded(e:Event):void {
    bitmaps.push(e.currentTarget.loader.content);
    loadedCount++;

    if (loadedCount == images.length) {
        for (var i:int = 0; i < images.length; i++) {
            var houseBmp:Bitmap = new Bitmap();
            houseBmp.bitmapData = bitmaps[i].bitmapData;
            houseBmp.x = 65*i;
            addChild(houseBmp);
        }
    }
}

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