ActionScript 3.0：以编程方式加载图像 [英] ActionScript 3.0: load an image programmatically

问题描述

我正在使用ActionScript 3.0开发Blackberry Playbock应用。我对此非常陌生。

I'm developing an Blackberry Playbock app with ActionScript 3.0. I'm very very new with this.

我具有以下项目结构（我使用的是Adobe Flash Builder Burrito）：

I have the following project structure (I'm using Adobe Flash Builder "Burrito"):

项目
|
src
|
资产
|
图像

project | src | assets | images

在图像文件夹上，我有几个要以编程方式加载的PNG图片。

On image folder I have several PNGs images that I want to load programmatically.

然后

我必须使用哪个GUI组件来显示图像？

What GUI component I must use to show an image?

推荐答案

此示例加载一个图像并使用按钮对其进行更改：

This example loads one image and uses buttons to change it:

// create a Loader object to hold things that you will load
var myLoader:Loader = new Loader();

// position the Loader
myLoader.x = 250;
myLoader.y = 0;

// put something into the Loader 
myLoader.load(new URLRequest("tree.jpg"));

// make the Loader visible
addChild(myLoader);

// button listeners
top_btn.addEventListener(MouseEvent.CLICK, loadPhoto);
last_btn.addEventListener(MouseEvent.CLICK, unloadAny);

// button functions
function loadPhoto(e:MouseEvent):void {
    myLoader.load(new URLRequest("sailboat.jpg"));
    addChild(myLoader);
}
// this function empties the Loader object 
function unloadAny(e:MouseEvent):void {
    removeChild(myLoader);
}

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