Flex4模塊/傳遞數據

Question

我有一個加載模塊的Flex 4應用程序。 除了無法創建對象和將對象強制轉換為我的模塊類型之外，其他所有操作均正常。 在運行時，它將引發錯誤。

我不確定模塊，Flex4和spark是否存在問題？ 我嘗試了許多不同的方法來設置/投射這些對象，但是似乎沒有任何效果。

我需要獲取這些對象，以便可以將數據傳遞給模塊。 謝謝你的幫助。

Main.mxml ...

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 
               xmlns:s="library://ns.adobe.com/flex/spark"
               xmlns:esri="http://www.esri.com/2008/ags" 
               xmlns:mx="library://ns.adobe.com/flex/mx" 
               minWidth="955" minHeight="600" applicationComplete="init();"
                >
    <fx:Declarations>
        <!-- Place non-visual elements (e.g., services, value objects) here -->
    </fx:Declarations>

    <fx:Script>

        <![CDATA[
            import com.gisworkshop.widgets.DataFrame.DataFrame;
            import com.gisworkshop.widgets.DataFrame.IDataFrame;

            import mx.containers.Canvas;
            import mx.core.IVisualElement;
            import mx.events.ModuleEvent;
            import mx.modules.IModuleInfo;
            import mx.modules.ModuleLoader;
            import mx.modules.ModuleManager;

            public var module:IModuleInfo;


            public function init():void{            

                /*  Use the Module Manager to add the module to the app.
                    We have to use the addElement method of the main application so that the componants in the Module are seen.
                    This is a little different from the documentation because we are using spark and Flex 4 in the application. */

                module = ModuleManager.getModule("com/gisworkshop/widgets/DataFrame/DataFrame.swf");                

                module.addEventListener(ModuleEvent.READY, modReadyHandler, false, 0, true);
                module.addEventListener(ModuleEvent.ERROR, modErrorHandler, false, 0, true);
                module.addEventListener(ModuleEvent.UNLOAD, modUnloadHandler, false, 0, true);

                module.load(null, null, null, moduleFactory);

            }

            private function modErrorHandler( moduleEvent:ModuleEvent ):void
            {


            }

            private function modReadyHandler( moduleEvent:ModuleEvent ):void
            {
                this.addElement(module.factory.create() as DataFrame);

                var obj:DataFrame;


            }

            private function modUnloadHandler( moduleEvent:ModuleEvent ):void
            {

                //When we unload the module, remove it from the application
                for (var i:int = 0; i < numElements; i++) {

                    var objModule:Object = this.getElementAt(i);

                    //the object we want to remove has the property "cvsDataFrame"
                    if (objModule.hasOwnProperty("cvsDataFrame")){
                        this.removeElementAt(i);
                    }   

                }

                /*When we unload the module, we remove all the event listeners and anything referenced to the module object.
                  Re-define the event listeners for the module object */

                module = ModuleManager.getModule("com/gisworkshop/widgets/DataFrame/DataFrame.swf");                

                module.addEventListener(ModuleEvent.READY, modReadyHandler, false, 0, true);
                module.addEventListener(ModuleEvent.ERROR, modErrorHandler, false, 0, true);
                module.addEventListener(ModuleEvent.UNLOAD, modUnloadHandler, false, 0, true);

                module.load(null, null, null, moduleFactory);

            }

            private function loadModule():void{

                module.unload();

            }

        ]]>

    </fx:Script>

    <esri:Map id="mainMap">

        <esri:ArcGISDynamicMapServiceLayer id="baseMap" url="http://services.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer"/>
    </esri:Map>

    <mx:Button label="Load" click="loadModule();"/>

</s:Application>

數據框...

<?xml version="1.0" encoding="utf-8"?>
<mx:Module xmlns:fx="http://ns.adobe.com/mxml/2009"
           xmlns:s="library://ns.adobe.com/flex/spark" 
           xmlns:mx="library://ns.adobe.com/flex/mx" layout="absolute" width="400" height="300" implements="com.gisworkshop.widgets.DataFrame.IDataFrame"

           >
    <fx:Declarations>
        <!-- Place non-visual elements (e.g., services, value objects) here -->
    </fx:Declarations>
    <fx:Script>

        <![CDATA[

            import com.esri.ags.Map;

            [Bindable]
            private var _Map:Map;

            public function setMap(map:Map):void{

                _Map = map;

            }

            public function zoom():void{

                _Map.zoomIn();

            }

        ]]>

    </fx:Script>

    <mx:Canvas id="cvsDataFrame" width="100" height="50" top="90" left="0" >
        <mx:Button label="Zoom" left="0" top="0" click="zoom();"/>
    </mx:Canvas>

</mx:Module>

IDataFrame接口...

package com.gisworkshop.widgets.DataFrame
{
    import com.esri.ags.Map;

    import mx.core.IVisualElement;

    public interface IDataFrame 
    {
        function setMap(_Map:Map):void;
        //function 
    }
}

錯誤：

ArgumentError: Error #2004: One of the parameters is invalid.
    at flash.display::Graphics/drawRoundRect()
    at spark.primitives::Rect/draw()[E:\dev\4.x\frameworks\projects\spark\src\spark\primitives\Rect.as:459]
    at spark.primitives.supportClasses::StrokedElement/updateDisplayList()[E:\dev\4.x\frameworks\projects\spark\src\spark\primitives\supportClasses\StrokedElement.as:143]
    at spark.primitives.supportClasses::GraphicElement/http://www.adobe.com/2006/flex/mx/internal::doUpdateDisplayList()[E:\dev\4.x\frameworks\projects\spark\src\spark\primitives\supportClasses\GraphicElement.as:3893]
    at spark.primitives.supportClasses::GraphicElement/validateDisplayList()[E:\dev\4.x\frameworks\projects\spark\src\spark\primitives\supportClasses\GraphicElement.as:3877]
    at spark.components::Group/updateDisplayList()[E:\dev\4.x\frameworks\projects\spark\src\spark\components\Group.as:956]
    at spark.skins::SparkSkin/updateDisplayList()[E:\dev\4.x\frameworks\projects\spark\src\spark\skins\SparkSkin.as:191]
    at mx.skins.spark::SparkSkinForHalo/updateDisplayList()[E:\dev\4.x\frameworks\projects\sparkskins\src\mx\skins\spark\SparkSkinForHalo.as:118]
    at mx.skins.spark::ButtonSkin/updateDisplayList()[E:\dev\4.x\frameworks\projects\sparkskins\src\mx\skins\spark\ButtonSkin.mxml:66]
    at mx.core::UIComponent/validateDisplayList()[E:\dev\4.x\frameworks\projects\framework\src\mx\core\UIComponent.as:8709]
    at mx.managers::LayoutManager/validateClient()[E:\dev\4.x\frameworks\projects\framework\src\mx\managers\LayoutManager.as:932]
    at mx.core::UIComponent/validateNow()[E:\dev\4.x\frameworks\projects\framework\src\mx\core\UIComponent.as:7792]
    at mx.controls::Button/http://www.adobe.com/2006/flex/mx/internal::viewSkinForPhase()[E:\dev\4.x\frameworks\projects\framework\src\mx\controls\Button.as:1985]
    at mx.controls::Button/http://www.adobe.com/2006/flex/mx/internal::viewSkin()[E:\dev\4.x\frameworks\projects\framework\src\mx\controls\Button.as:1885]
    at mx.controls::Button/commitProperties()[E:\dev\4.x\frameworks\projects\framework\src\mx\controls\Button.as:1631]
    at mx.core::UIComponent/validateProperties()[E:\dev\4.x\frameworks\projects\framework\src\mx\core\UIComponent.as:7933]
    at mx.managers::LayoutManager/validateProperties()[E:\dev\4.x\frameworks\projects\framework\src\mx\managers\LayoutManager.as:572]
    at mx.managers::LayoutManager/doPhasedInstantiation()[E:\dev\4.x\frameworks\projects\framework\src\mx\managers\LayoutManager.as:700]
    at mx.managers::LayoutManager/doPhasedInstantiationCallback()[E:\dev\4.x\frameworks\projects\framework\src\mx\managers\LayoutManager.as:1072]

Answer 1

您的問題不是鑄造，而是某種皮膚不兼容。 嘗試用Spark按鈕替換MX按鈕。

您使用什么版本的SDK？