从字符串中的ActionScript实例化一个类3 [英] Instantiate a class from a string in ActionScript 3

问题描述

我有一个字符串，在运行时，包含我想要实例化一个类的名称。我将如何做呢？

我读到建议使用 flash.utils.getDefinitionByName（）：

  VAR MyClass的：类= getDefinitionByName（package.className）为类;
VAR将myInstance：* =新MyClass的（）;
 

不过，这使我有以下错误：

  

[故障]异常，信息=的ReferenceError：错误＃1065：变量的className没有定义

解决方案

我已经出来是简单地写出来的类名由分号在你的项目中分离出来，在任何地方，最简单的方法

例如。我在其中创建一个Assets.as文件这样的：

 包{

公共类资产{

    //要调用getDefinitionByName当从编译器避免错误
    //只列出所有未以其他方式在code引用的类：
    气球;
    云;
    FlyingHorse;
    FlyingPig;
    飞碟;
    齐柏林;
}
}
 

全部code为例/本教程是在这里：<一href="http://producerism.com/blog/flashpunk-dame-and-lua-tutorial-part-6/">http://producerism.com/blog/flashpunk-dame-and-lua-tutorial-part-6/

I've got a string which, in run-time, contains the name of a class that I want to instantiate. How would I do that?

I read suggestions to use flash.utils.getDefinitionByName():

var myClass:Class = getDefinitionByName("package.className") as Class;
var myInstance:* = new myClass();

However, that gives me the following error:

[Fault] exception, information=ReferenceError: Error #1065: Variable className is not defined.

解决方案

The easiest method I've come up with is to simply write the classnames out, separated by semicolons, anywhere in your project.

e.g. I create an Assets.as file with this in it:

package {   

public class Assets {       

    // To avoid errors from the compiler when calling getDefinitionByName
    // just list all of the classes that are not otherwise referenced in code:
    Balloon;
    Cloud;
    FlyingHorse;
    FlyingPig;
    UFO;
    Zeppelin;       
}
}

Full code example/tutorial on this is here: http://producerism.com/blog/flashpunk-dame-and-lua-tutorial-part-6/

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