apache-flex - Flex-拖放fxg

Question

我正在构建一个涉及 fxg 图形拖放的 flex 项目

我的图形实例化如下

  <graphics:arrow2 id="object" mouseMove="mouseMoveHandler(event);" />

我收到一个错误：“调用可能未定义的方法 Graphic。”

如果我将拖动对象更改为图像并将下面的“图形”替换为“图像”，则此方法有效。我应该使用什么来引用拖放中的 fxg 图形？

我的拖放功能如下

private function mouseMoveHandler(event:MouseEvent):void
        {
                            var dragInitiator:Graphic = Graphic(event.currentTarget);
            var ds:DragSource = new DragSource();
            ds.addData(dragInitiator,"gph");
            DragManager.doDrag(dragInitiator, ds, event);

        }
        private function dragEnterHandler(event:DragEvent):void {

            if (event.dragSource.hasFormat("gph"))
            {
           DragManager.acceptDragDrop(SkinnableContainer(event.currentTarget));
            }

        }

        private var objectX:Number;


        private function dragDropHandler(event:DragEvent):void {

            objectX= SkinnableContainer(event.currentTarget).mouseX+50;


            Graphic(event.dragInitiator).x = objectX;
            Graphic(event.dragInitiator).y = 100;

        }

Answer 1

这是取自SaturnBoy的示例：

<s:Application
        xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark">

    <fx:Script>
        <![CDATA[
            imports...

            private function mouseDownHandler(e:MouseEvent):void {
                DragManager.doDrag(e.currentTarget as IUIComponent, null, e);
            }

            private function dragEnterHandler(e:DragEvent):void {
                DragManager.acceptDragDrop(e.currentTarget as IUIComponent);
            }

            private function dragDropHandler(e:DragEvent):void {
                e.currentTarget.addElement(e.dragInitiator);
            }
        ]]>
    </fx:Script>

    <s:Panel title="src" width="100" minHeight="133" x="10" y="10">
        <s:Graphic width="80" height="80"
                mouseDown="mouseDownHandler(event)">
            <s:Rect ... </s:Rect>
        </s:Graphic>

        <s:Graphic width="80" height="80"
                mouseDown="mouseDownHandler(event)">
            <s:Ellipse ... </s:Ellipse>
        </s:Graphic>
        ...
    </s:Panel>

    <s:Panel title="target" width="100" minHeight="133" x="120" y="10"
            dragEnter="dragEnterHandler(event);"
            dragDrop="dragDropHandler(event);">
        ...
    </s:Panel>
</s:Application>