AS3：复制装载机从一个对象到另一个 [英] AS3: Copying a Loader from one object to another

问题描述

我有两个班，给他们打电话A和B.它们都包含Loader对象。在课堂上我内容加载到Loader对象。

I have two classes, call them A and B. They both contain a Loader object. In class A I load content into the Loader object.

public class A {
    var loader:Loader;

    public function A():void {
        loader = new Loader();
        this.addChild(loader);
        loader.load(...);
    }
}

public class B() {
    var loader:Loader;

    public function B():void {
        loader = new Loader(); 
        this.addChild(loader);
    }
}

我现在需要指定的加载器B的装载机（后装载完成）。

I need to now assign A's Loader to B's Loader (after the load is complete).

在其他一些I类有A和B在做装载机值的直接分配一个实例似乎不工作（显示B计算，则不会显示A的装载量）。

In some other class I have an instance of A and B. Doing a direct assignment of the loader values doesn't seem to work (when showing B, A's loader content is not displayed).

var b:B = new B();
var a:A = new A();

// ... I wait for a's loader to be loaded ...
// ... then ... 
b.loader = a.loader;
addChild(b);
// A's Loader is not shown ...

如果我这样做，它的工作原理：

If I do the following, it works:

b.addChild(a.loader);

但是，这不是我想要的。我不希望管理一帮孩子的时候，我知道我只有一个孩子，但只是想改变它的内容。

But that's not what I want. I don't want to manage a bunch of children when I know I only have one child but just want to change its content.

有没有办法复制/直接分配装载机？我想分配给内容但那是只读的。有另一种方法我能做到这一点？基本上我有所有获得装有照片装载机对象的数组。然后，我有一个单一的装载机那是在舞台上，我想从我的数组分配给它的图像（装载机）。

Is there a way to copy/assign a Loader directly? I tried assigning to 'content' but that's read-only. Is there another way I can do this? Basically I have an array of Loader objects that all get loaded with images. I then have a single Loader that's on the stage and I want to assign to it images (Loaders) from my array.

感谢。

推荐答案

我结束了交换孩子获得同样的效果。它比我想象的要那么复杂。

I ended up swapping the children to get the same effect. It's less complicated than I thought it would be.

所以基本上B中我所做的：

So basically in B I did:

this.setChildIndex(loader,0);

这是为了确保装载机是在索引0（它可以是任何固定的指数但对我来说，我需要它出现在底部）。它没有必要在B中的装载机开始，但我只是把它放在那里，以确保有什么东西固定在索引0（所以我不小心删除了一些其他的孩子）。

This is to make sure the loader is at index 0. (It can be any fixed index but in my case I needed it to appear at the bottom). It's not necessary to have a loader in B initially but I just put it there to make sure there's something fixed at index 0 (so I don't accidentally remove some other child).

然后设置A的程序的时候，给B我刚换出的孩子，在指数0。

Then when setting A's loader to B I'd just swap out the child at index 0.

b.removeChildAt(0);  
b.addChildAt(a.loader,0);

这不正是我想要的解决方案，但它的工作很好，到目前为止。

It's not exactly the solution I wanted but it's working well so far.

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