图层2是不够具体。什么什么的显示对象容器的层？

"Layer 2" isn't specific enough. What layer of what display object container?

下面是显示列表编程要说明一个很好的文章启发。

Here is a good article on display list programming that should prove enlightening.

要回答你的问题，你将确定父displayObject的，并调用它的addChild方法，与您的目标子DisplayObject作为参数。如果你的父母DisplayObject是含有类（扩展的DisplayObject，雪碧，例如一个类），你可以调用addChild（）或this.addChild（）。要增加孩子的一层除了最上面，则可以使用addChildAt（）。

To answer your question, you would identify the parent displayObject and call its addChild method, with your targeted child displayobject as the parameter. If your parent displayObject is the containing class (a class that extends DisplayObject, a Sprite, for example), you can just call addChild() or this.addChild(). To add the child at a layer other than the topmost, you can use addChildAt().

        var someclip:Sprite = new Sprite();
        var someOtherClip:Sprite = new Sprite();
        var yetAnotherClip:Sprite = new Sprite();
        var someLibrayClip:LibraryClip = new LibraryClip();

        this.addChild(someClip);
        this.addChildAt(someOtherClip,0);
        someOtherClip.addChild(yetAnotherClip);
        someOtherClip.addChildAt(someLibrayClip,0);
        etc...

请注意，该显示列表是一个堆栈一样的阵列，并在其情况下，可能不包含空索引。如果你想在2层的东西，还必须有项目在0和1。

Note that the display list is a stack like an array, and in its case, may not contain empty indexes. If you want something in layer 2, there must also be items in 0 and 1.

希望有所帮助 -