AS3，以SWF作为自定义类型加载 [英] AS3, loading in a SWF as a custom type

问题描述

这里有基本问题。通常在AS3中，你通过Loader加载到SWF中，你得到的是一些类型为Loader的伪MovieClip。

Fundamental question here. Typically in AS3 you load in a SWF via the Loader, and what you get is some sort of pseudo MovieClip that is of type "Loader".

在sun下将这个加载的SWF转换为扩展MovieClip而不是Loader的自定义类型，假设SWF是使用自定义类型的基类发布的？没有数据丢失？

Is there any holy way under the sun to cast this loaded SWF to a custom type that extends MovieClip and not Loader, assuming the SWF was published with a base class of the custom type? Without data loss?

或者，你不能，你甚至可以从一个自定义类型扩展Loader本身？

Alternatively, let's say you can't, can you even cast it from a custom type that extends Loader itself?

推荐答案

您可以这样做：

stub swf中的代码：

Code in the stub swf:

package {

    import flash.display.MovieClip;

    public class Stub extends MovieClip implements IStub {

        public function Stub() {
            trace("Stub::ctor");
        }

        public  function traceIt(value:String):void {
            trace("Stub::traceIt " + value);
        }
    }
}

，但不是严格必需的。

I'm using an interface, but it's not strictly neccesary.

package {

    public interface IStub {

        function traceIt(value:String):void;

    }
}

。

var loader:Loader = new Loader();
loader.contentLoaderInfo.addEventListener(Event.INIT,handleInit);
loader.load(new URLRequest("Stub.swf"));

function handleInit(e:Event):void {
    var stub:Stub = loader.content as Stub;
//  or, using an interface 
//  var stub:IStub = loader.content as IStub;
    stub.traceIt("testing");
}

这篇关于AS3，以SWF作为自定义类型加载的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！