Flex4 模块/传递数据

Question

我有一个加载模块的 Flex 4 应用程序。一切工作正常，除了我无法创建和对象或将对象强制转换为我的模块的类型。在运行时它会抛出错误。

我不确定模块、Flex4和spark是否有问题？我尝试了许多不同的方法来设置/投射这些对象，但似乎没有任何效果。

我需要获取这些对象，以便将数据传递到模块。感谢您的任何帮助。

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>

DataFrame...

<?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 
    }
}

错误：

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

你的问题不在于选角，而在于某种皮肤不兼容。尝试用 Spark 按钮替换 MX 按钮。

您使用什么版本的SDK？