Flex 的getChildren()方法

flex Container 类的getChildren方法只能得到调用对象的子对象
例如flex结构

    <mx:VBox id="uploadbox">       
         <mx:HBox id="file1" paddingTop="10">
                <mx:ProgressBar id="bar1" visible="true"
                    labelPlacement="center" 
                    minimum="0" maximum="100"
                    label="当前进度: 0%"
                    direction="right"
                    mode="manual" width="308"  height="27" />
                   <mx:Button label="上传" height="27"  click="upload(event);" x="320" y="10"/>
        </mx:HBox>
         ......  // 此处省略若干HBox
    </mx:VBox>
    

代码程序

        var hboxChild:Array = uploadbox.getChildren();
                
                for(var i:int=0;i<hboxChild.length;i++)
                {
                    trace("hboxChild.name= "+(hboxChild[i] as DisplayObject).name);
                }

结果如下

hboxChild.name= file1            //如果没有设置name属性，则name = id
hboxChild.name= hb_5
hboxChild.name= hb_6
hboxChild.name= hb_7
hboxChild.name= hb_8
hboxChild.name= hb_9