Help me,About invoking PopUpManager.addPopUp problem in Flex 4 Module

Question

hello,when I invoke PopUpManager.addPopUp(),have a problem. detail from the fellowing program code;
<?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" width="100%" height="100%"
           xmlns:mx="library://ns.adobe.com/flex/mx" creationComplete="initApp()">
    <fx:Declarations>
        <!-- 将非可视元素（例如服务、值对象）放在此处 -->
    </fx:Declarations>
    <fx:Script>
        <![CDATA[
            import mx.collections.ArrayCollection;
            import mx.controls.Alert;
            import mx.core.FlexBitmap;
            import mx.core.FlexGlobals;
            import mx.events.CloseEvent;
            import mx.events.DataGridEvent;
            import mx.events.ListEvent;
            import mx.managers.PopUpManager;
            import mx.rpc.AsyncToken;
            import mx.rpc.events.FaultEvent;
            import mx.rpc.events.ResultEvent;
            import mx.rpc.remoting.RemoteObject;
            import org.mydev.fnd.proxy.FndLookupHeadersProxy;
            import org.mydev.fnd.proxy.FndLookupLinesProxy;
            import org.mydev.fnd.vo.FndLookupHeadersVO;
            import org.mydev.fnd.vo.FndLookupLinesVO;
            import org.mydev.utils.PublicFunction;
            import spark.components.Application;
            [Bindable]
            private var myac:ArrayCollection=new ArrayCollection();
            [Bindable]
            private var myacLines:ArrayCollection=new ArrayCollection();
            private var headerProxy:FndLookupHeadersProxy=new FndLookupHeadersProxy();
            private var linesProxy:FndLookupLinesProxy=new FndLookupLinesProxy();
            private var add:FndHeaderDM;
            private var lineAdd:FndLineDM;
            private function lfRowNum(oItem:Object,iCol:int):String
                var iIndex:int = myac.getItemIndex(oItem) + 1;
                return String(iIndex);
            private function lfRowNumLines(oItem:Object,iCol:int):String
                var iIndex:int = myacLines.getItemIndex(oItem) + 1;
                return String(iIndex);
            private function we_resultHandler(event:ResultEvent):void
                myac=event.result as ArrayCollection;
                //                PopUpManager.removePopUp(wi);
                // TODO Auto-generated method stub
            private function we_faultHeadler(event:FaultEvent):void{
                //                var msg:String=event.message.toString();
                Alert.show("插入数据失败!");
            private function we_resultHandlerLines(event:ResultEvent):void
                myacLines=event.result as ArrayCollection;
                //                PopUpManager.removePopUp(wi);
                // TODO Auto-generated method stub
            private function we_faultHeadlerLines(event:FaultEvent):void{
                //                var msg:String=event.message.toString();
                Alert.show("插入数据失败!");
            public function initApp():void{
                dataHeaders.allowMultipleSelection=true;
                var token:AsyncToken=headerProxy.getAllHeaders();
                PublicFunction.addResponder(token,we_resultHandler,we_faultHeadler);
                //                dataHeaders.addEventListener(MouseEvent.DOUBLE_CLICK,doubleClick)
                //                dataHeaders.addEventListener(ListEvent.KEY_DOWN,selectChange);
           protected function btnAddHeader_clickHandler(event:MouseEvent):void
                //                trace("test.............");
                add=new FndHeaderDM();
                PopUpManager.addPopUp(add,parent,true);
                //PopUpManager.addPopUp(add,FlexGlobals.topLevelApplication as DisplayObject,true);
                PopUpManager.bringToFront(add);
                PopUpManager.centerPopUp(add);
                //                var myFun:Function=initApp;
                var fndLookupHeadersVO:FndLookupHeadersVO=new FndLookupHeadersVO();
                add.init(fndLookupHeadersVO,1,myac);
            private function headerAlertClickHandler(event:CloseEvent):void { 
                var myObj:FndLookupHeadersVO=(FndLookupHeadersVO)(dataHeaders.selectedItem);
                if (event.detail==Alert.YES){  
                    //                    Alert.show("你选择了 确定");  
                    myac.removeItemAt(dataHeaders.selectedIndex);   
                    //this.parent.removeChildAt(dataHeaders.selectedIndex);
                    headerProxy.removeObj(myObj);
                    //                initApp();
                    //dataHeaders.initialize();
                //                else if(event.detail==Alert.NO){  
                //                    Alert.show("你选择了 否");  
                //                }else{  
                //                    Alert.show("你选择了 取消");  
            protected function btnDelHeader_clickHandler(event:MouseEvent):void
                if (dataHeaders.selectedItem!=null){
                    Alert.show("是否要删除？", "信息提示",3, this, headerAlertClickHandler);
                }else{
                    Alert.show("请选定一条记录进行操作!", "信息提示");
                //                PublicFunction.confirmDelete(dataHeaders.selectedItems,secondAlertClickHandler);
            protected function btnEditHeader_clickHandler(event:MouseEvent):void
                if (dataHeaders.selectedItem!=null){
                    var myObj:FndLookupHeadersVO=(FndLookupHeadersVO)(dataHeaders.selectedItem);
                    add=new FndHeaderDM();
                    PopUpManager.addPopUp(add,parent,true);
                    PopUpManager.bringToFront(add);
                    PopUpManager.centerPopUp(add);
                    add.init(myObj,2,myac);
                }else{
                    Alert.show("请选定一条记录进行操作!", "信息提示");
            protected function dataHeaders_changeHandler(event:ListEvent):void
                //                Alert.show(myac.getItemAt(dataHeaders.selectedIndex)+"");
                var myObj:FndLookupHeadersVO=(FndLookupHeadersVO)(myac.getItemAt(dataHeaders.selectedIndex));
                var myLineObj:FndLookupLinesVO=new FndLookupLinesVO();
                myLineObj.headerId=myObj.headerId;
                var token:AsyncToken=linesProxy.getByObj(myLineObj);
                PublicFunction.addResponder(token,we_resultHandlerLines,we_faultHeadlerLines);
            protected function dataHeaders_doubleClickHandler(event:MouseEvent):void
                if (dataHeaders.selectedItem!=null){
                    var myObj:FndLookupHeadersVO=(FndLookupHeadersVO)(dataHeaders.selectedItem);
                    add=new FndHeaderDM();
                    PopUpManager.addPopUp(add,parent,true);
                    PopUpManager.bringToFront(add);
                    PopUpManager.centerPopUp(add);
                    add.init(myObj,2,myac);
                }else{
                    Alert.show("请选定一条记录进行操作!", "信息提示");
            protected function dataLines_doubleClickHandler(event:MouseEvent):void
                if (dataHeaders.selectedItem!=null)
                    lineAdd=new FndLineDM();
                    PopUpManager.addPopUp(lineAdd,parent,true);
                    PopUpManager.bringToFront(lineAdd);
                    PopUpManager.centerPopUp(lineAdd);
                    var lineObject:FndLookupLinesVO=(FndLookupLinesVO)(dataLines.selectedItem);
                    lineAdd.init(lineObject,2,myacLines);
                else
                    Alert.show("请选定一条记录进行操作!", "信息提示");
            protected function btnAddLines_clickHandler(event:MouseEvent):void
                if (dataHeaders.selectedItem!=null)
                    lineAdd=new FndLineDM();
                    PopUpManager.addPopUp(lineAdd,parent,true);
                    PopUpManager.bringToFront(lineAdd);
                    PopUpManager.centerPopUp(lineAdd);
                    var fndLookupLinesVO:FndLookupLinesVO=new FndLookupLinesVO();
                    var headerObject:FndLookupHeadersVO=(FndLookupHeadersVO)(dataHeaders.selectedItem);
                    fndLookupLinesVO.headerId=headerObject.headerId;
                    lineAdd.init(fndLookupLinesVO,1,myacLines);
                else
                    Alert.show("请选定一条记录进行操作!", "信息提示");
            protected function btnEditLines_clickHandler(event:MouseEvent):void
                if (dataLines.selectedItem!=null)
                    lineAdd=new FndLineDM();
                    PopUpManager.addPopUp(lineAdd,parent,true);
                    PopUpManager.bringToFront(lineAdd);
                    PopUpManager.centerPopUp(lineAdd);
                    var lineObject:FndLookupLinesVO=(FndLookupLinesVO)(dataLines.selectedItem);
                    lineAdd.init(lineObject,2,myacLines);
                else
                    Alert.show("请选定一条记录进行操作!", "信息提示");
            private function lineAlertClickHandler(event:CloseEvent):void { 
                var myObj:FndLookupLinesVO=(FndLookupLinesVO)(dataLines.selectedItem);
                if (event.detail==Alert.YES){  
                    myacLines.removeItemAt(dataLines.selectedIndex);   
                    linesProxy.removeObj(myObj);
            protected function btnDelLines_clickHandler(event:MouseEvent):void
                if (dataLines.selectedItem!=null){
                    Alert.show("是否要删除？", "信息提示",3, this, lineAlertClickHandler);
                }else{
                    Alert.show("请选定一条记录进行操作!", "信息提示");
        ]]>
    </fx:Script>
    <s:Panel height="100%" width="100%"  title="HEADERS" autoLayout="true">
        <s:Panel x="0" y="194" height="100%" width="100%" title="LINES" autoLayout="true">
            <mx:DataGrid x="10" y="39" height="100%" width="100%"  id="dataLines" dataProvider="{myacLines}" doubleClickEnabled="true" doubleClick="dataLines_doubleClickHandler(event)">
                <mx:columns>
                    <mx:DataGridColumn headerText="#RowNo" labelFunction="lfRowNumLines" width="50"/>
                    <mx:DataGridColumn headerText="LINE_ID" dataField="lineId"/>
                    <mx:DataGridColumn headerText="LOOKUP_CODE" dataField="lookupCode"/>
                    <mx:DataGridColumn headerText="MEANING" dataField="meaning"/>
                    <mx:DataGridColumn headerText="DESCRIPTION" dataField="description"/>
                </mx:columns>
            </mx:DataGrid>
            <s:Button x="200" y="10" label="删除" id="btnDelLines" click="btnDelLines_clickHandler(event)"/>
            <s:Button x="10" y="10" label="追加" id="btnAddLines" click="btnAddLines_clickHandler(event)"/>
            <s:Button x="102" y="10" label="编辑" id="btnEditLines" click="btnEditLines_clickHandler(event)"/>
        </s:Panel>
        <s:Button x="10" y="10" label="追加" id="btnAddHeader" click="btnAddHeader_clickHandler(event)"/>
        <s:Button x="106" y="10" label="编辑" id="btnEditHeader" click="btnEditHeader_clickHandler(event)"/>
        <s:Button x="207" y="10" label="删除" id="btnDelHeader" click="btnDelHeader_clickHandler(event)"/>
        <mx:DataGrid x="10" y="39" height="147" width="100%" change="dataHeaders_changeHandler(event)" doubleClick="dataHeaders_doubleClickHandler(event)" dataProvider="{myac}" id="dataHeaders" doubleClickEnabled="true" lockedColumnCount="1">
            <mx:columns>
                <mx:DataGridColumn headerText="#RowNo" labelFunction="lfRowNum" width="50" />
                <mx:DataGridColumn headerText="HEADER_ID" dataField="headerId"/>
                <mx:DataGridColumn headerText="LOOKUP_TABLE" dataField="lookupTable"/>
                <mx:DataGridColumn headerText="LOOKUP_COLUMN" dataField="lookupColumn"/>
                <mx:DataGridColumn headerText="LOOKUP_DESCRIPTION" dataField="lookupDescription"/>
            </mx:columns>
        </mx:DataGrid>
    </s:Panel>
</mx:Module>
When I execute  btnAddHeader_clickHandler(event) function,error information  in the fellowing:
Error: 找不到 FndHeaderDM232.SkinnableContainerSkin233.contentGroup.frm.FormItem238.txtTable 的外观。
    at spark.components.supportClasses::SkinnableComponent/attachSkin()[E:\dev\4.x\frameworks\pr ojects\spark\src\spark\components\supportClasses\SkinnableComponent.as:632]
    at spark.components.supportClasses::SkinnableComponent/validateSkinChange()[E:\dev\4.x\frame works\projects\spark\src\spark\components\supportClasses\SkinnableComponent.as:405]
    at spark.components.supportClasses::SkinnableComponent/createChildren()[E:\dev\4.x\framework s\projects\spark\src\spark\components\supportClasses\SkinnableComponent.as:368]
    at mx.core::UIComponent/initialize()[E:\dev\4.x\frameworks\projects\framework\src\mx\core\UI Component.as:7349]
    at mx.core::UIComponent/http://www.adobe.com/2006/flex/mx/internal::childAdded()[E:\dev\4.x\frameworks\projects\fr amework\src\mx\core\UIComponent.as:7241]
    at mx.core::Container/http://www.adobe.com/2006/flex/mx/internal::childAdded()[E:\dev\4.x\frameworks\projects\fr amework\src\mx\core\Container.as:3972]
    at mx.core::Container/addChildAt()[E:\dev\4.x\frameworks\projects\framework\src\mx\core\Cont ainer.as:2616]
    at mx.core::Container/addChild()[E:\dev\4.x\frameworks\projects\framework\src\mx\core\Contai ner.as:2534]
    at mx.core::Container/createComponentFromDescriptor()[E:\dev\4.x\frameworks\projects\framewo rk\src\mx\core\Container.as:4392]
    at mx.core::Container/createComponentsFromDescriptors()[E:\dev\4.x\frameworks\projects\frame work\src\mx\core\Container.as:4181]
    at mx.core::Container/createChildren()[E:\dev\4.x\frameworks\projects\framework\src\mx\core\ Container.as:3187]
    at mx.containers::FormItem/createChildren()[E:\dev\4.x\frameworks\projects\framework\src\mx\ containers\FormItem.as:479]
    at mx.core::UIComponent/initialize()[E:\dev\4.x\frameworks\projects\framework\src\mx\core\UI Component.as:7349]
    at mx.core::Container/initialize()[E:\dev\4.x\frameworks\projects\framework\src\mx\core\Cont ainer.as:3129]
    at mx.core::UIComponent/http://www.adobe.com/2006/flex/mx/internal::childAdded()[E:\dev\4.x\frameworks\projects\fr amework\src\mx\core\UIComponent.as:7241]
    at mx.core::Container/http://www.adobe.com/2006/flex/mx/internal::childAdded()[E:\dev\4.x\frameworks\projects\fr amework\src\mx\core\Container.as:3972]
    at mx.core::Container/addChildAt()[E:\dev\4.x\frameworks\projects\framework\src\mx\core\Cont ainer.as:2616]
    at mx.containers::Form/addChildAt()[E:\dev\4.x\frameworks\projects\framework\src\mx\containe rs\Form.as:293]
    at mx.core::Container/addChild()[E:\dev\4.x\frameworks\projects\framework\src\mx\core\Contai ner.as:2534]
    at mx.containers::Form/addChild()[E:\dev\4.x\frameworks\projects\framework\src\mx\containers \Form.as:282]
    at mx.core::Container/createComponentFromDescriptor()[E:\dev\4.x\frameworks\projects\framewo rk\src\mx\core\Container.as:4392]
    at mx.core::Container/createComponentsFromDescriptors()[E:\dev\4.x\frameworks\projects\frame work\src\mx\core\Container.as:4181]
    at mx.core::Container/createChildren()[E:\dev\4.x\frameworks\projects\framework\src\mx\core\ Container.as:3187]
    at mx.core::UIComponent/initialize()[E:\dev\4.x\frameworks\projects\framework\src\mx\core\UI Component.as:7349]
    at mx.core::Container/initialize()[E:\dev\4.x\frameworks\projects\framework\src\mx\core\Cont ainer.as:3129]
    at mx.core::UIComponent/http://www.adobe.com/2006/flex/mx/internal::childAdded()[E:\dev\4.x\frameworks\projects\fr amework\src\mx\core\UIComponent.as:7241]
    at mx.core::UIComponent/addChildAt()[E:\dev\4.x\frameworks\projects\framework\src\mx\core\UI Component.as:6947]
    at spark.components::Group/addDisplayObjectToDisplayList()[E:\dev\4.x\frameworks\projects\sp ark\src\spark\components\Group.as:1825]
    at spark.components::Group/http://www.adobe.com/2006/flex/mx/internal::elementAdded()[E:\dev\4.x\frameworks\projects\ spark\src\spark\components\Group.as:1416]
    at spark.components::Group/setMXMLContent()[E:\dev\4.x\frameworks\projects\spark\src\spark\c omponents\Group.as:512]
    at spark.components::Group/set mxmlContent()[E:\dev\4.x\frameworks\projects\spark\src\spark\components\Group.as:452]
    at spark.components::SkinnableContainer/set mxmlContent()[E:\dev\4.x\frameworks\projects\spark\src\spark\components\SkinnableContaine r.as:604]
    at spark.components::SkinnableContainer/createDeferredContent()[E:\dev\4.x\frameworks\projec ts\spark\src\spark\components\SkinnableContainer.as:986]
    at spark.components::SkinnableContainer/createContentIfNeeded()[E:\dev\4.x\frameworks\projec ts\spark\src\spark\components\SkinnableContainer.as:1014]
    at spark.components::SkinnableContainer/createChildren()[E:\dev\4.x\frameworks\projects\spar k\src\spark\components\SkinnableContainer.as:827]
    at mx.core::UIComponent/initialize()[E:\dev\4.x\frameworks\projects\framework\src\mx\core\UI Component.as:7349]
    at org.mydev.fnd.view::FndHeaderDM/initialize()
    at mx.managers.systemClasses::ChildManager/childAdded()[E:\dev\4.x\frameworks\projects\frame work\src\mx\managers\systemClasses\ChildManager.as:189]
    at mx.managers::SystemManager/http://www.adobe.com/2006/flex/mx/internal::rawChildren_addChildAt()[E:\dev\4.x\frameworks \projects\framework\src\mx\managers\SystemManager.as:1963]
    at mx.managers::SystemManager/addChildAt()[E:\dev\4.x\frameworks\projects\framework\src\mx\m anagers\SystemManager.as:1595]
    at mx.managers::SystemManager/addChild()[E:\dev\4.x\frameworks\projects\framework\src\mx\man agers\SystemManager.as:1578]
    at mx.managers::PopUpManagerImpl/addPopUp()[E:\dev\4.x\frameworks\projects\framework\src\mx\ managers\PopUpManagerImpl.as:346]
    at mx.managers::PopUpManager$/addPopUp()[E:\dev\4.x\frameworks\projects\framework\src\mx\man agers\PopUpManager.as:193]
    at org.mydev.fnd.view::FndLookupDM/btnAddHeader_clickHandler()[D:\eclipse-jee-galileo-SR1-wi n32\workspace\subapp\flex_src\org\mydev\fnd\view\FndLookupDM.mxml:88]
    at org.mydev.fnd.view::FndLookupDM/__btnAddHeader_click()[D:\eclipse-jee-galileo-SR1-win32\w orkspace\subapp\flex_src\org\mydev\fnd\view\FndLookupDM.mxml:264]
I hope you help me,I'm Flex new  develper. thanks!
My Email: [email protected].

Answer 1

Hi
I have a similar (but not exactly the same, see my post: http://forums.adobe.com/message/3943082#3943082). I tried your solution but I don't really understand what you mean by
2) The module is being linked into the main application.  There are plenty
of old discussions on this topic.
Can you be more specific ?
Thank you !!
Max