Flex：对象的深度拷贝

对象的深度拷贝方法，在应用中经常需要传递一个对象参数，传递过去的对象的修改又不希望对原对象产生影响，用该对象方法可以轻松实现了

1. package {
   
2. import flash.utils.ByteArray;
   
3. import flash.utils.getQualifiedClassName;
   
4. import flash.utils.getDefinitionByName;
   
5. import flash.net.registerClassAlias;
   
6. 
   
7. 
   
8. public class CopyUtil{
   
9. public static function clone(object:Object):Object{
   
10. var qClassName:String = getQualifiedClassName(object);
    
11. var objectType:Class = getDefinitionByName(qClassName) as Class;
    
12. registerClassAlias(qClassName, objectType);
    
13. var copier : ByteArray = new ByteArray();
    
14. copier.writeObject(object);
    
15. copier.position = 0;
    
16. return copier.readObject();
    
17. }
    
18. }
    
19. }

使用方法：

1. var instanceA : ClassA = new ClassA();
   
2. var instanceCopy : ClassA = CopyUtil.clone(instanceA ) as ClassA;
   
3. trace(instanceCopy == instanceA)//fale;
   
4. trace(instanceCopyis ClassA) // true;
   
5. trace(instanceCopy is superClass) //true;