ActionScript 3 : Get a Class Reference by Class Name_reference class name: foo-优快云博客

本文介绍如何在ActionScript 3中通过类名动态获取类的引用，利用`getDefinitionByName`方法实例化指定路径的类。这对于需要动态加载类的情况非常有用。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

ActionScript 3 : Get a Class Reference by Class Name

If you need to get a reference to a class in ActionScript 3, but only know the class name, then you can use the flash.utils.getDefinitionByName to create an instance of the class.

For example:

package
{
	import flash.display.Sprite;
	import flash.utils.getDefinitionByName;

	public class DynamicCall extends Sprite
	{
		public function DynamicCall()
		{
            var ClassReference:Class = getDefinitionByName("String") as Class;
            var s:String = (new ClassReference("foo=") as String);
            trace(s);
		}
	}
}

This basically creates an instance of the String class, from the class name “String”. getDefinitionByName takes the entire class path, so if you wanted to create an instance of MovieClip, you would provide the entire path:

            var ClassReference:Class = getDefinitionByName("flash.display.MovieClip") as Class;

Anyways, pretty simple stuff, but can come in useful.

http://www.mikechambers.com/blog/2006/06/22/actionscript-3-get-a-class-reference-by-class-name/