Try setting creationPolicy="all" on the tabNavigator i.e <mx:TabNavigator id="tn" x="10" y="10" width="734" height="471" creationPolicy="all">
On Feb 19, 9:19 pm, Israel <[email protected]> wrote: > We are having an issue with our map component where it fails to > properly initialize, it seems, when placed in any tab other than the > first tab within a tabNavigator. > > It seems like it's having an issue with not being created on > application load since it only begins initializing once the tab is > clicked. > > Has anyone else come across this and if so what is the exact reason > for it? > > It seems it kind of works if the selectedIndex of the tabNavigator is > set to the tab which contains the map but even then it sporadically > throws the error. > > Does anyone have a better fix/workaround? > > I appreciate any help and/or feedback. > > The error can be reproduced with the following simple example: > > <?xml version="1.0" encoding="utf-8"?> > <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"; > layout="absolute" xmlns:maps="com.google.maps.*"> > <mx:TabNavigator id="tn" x="10" y="10" width="734" height="471"> > <mx:Canvas label="Tab 1" width="100%" height="100%"> > <mx:DataGrid x="20" y="26"> > <mx:columns> > <mx:DataGridColumn headerText="Column 1" > dataField="col1"/ > > <mx:DataGridColumn headerText="Column 2" > dataField="col2"/ > > <mx:DataGridColumn headerText="Column 3" > dataField="col3"/ > > </mx:columns> > </mx:DataGrid> > > </mx:Canvas> > <mx:Canvas label="Tab 2" width="100%" height="100%"> > <maps:Map key=""> > > </maps:Map> > </mx:Canvas> > </mx:TabNavigator> > </mx:Application> > > The error received is the following: > > TypeError: Error #1009: Cannot access a property or method of a null > object reference. > at com.google.maps::Map/drawBackground() > at com.google.maps::Map/onAdded() > at flash.display::DisplayObjectContainer/addChildAt() > at mx.core::UIComponent/http://www.adobe.com/2006/flex/mx/internal:: > $addChildAt()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx > \core\UIComponent.as:5083] > at mx.core::Container/addChildAt()[C:\autobuild\3.2.0\frameworks > \projects\framework\src\mx\core\Container.as:2215] > at mx.core::Container/addChild()[C:\autobuild\3.2.0\frameworks > \projects\framework\src\mx\core\Container.as:2140] > at mx.core::Container/createComponentFromDescriptor()[C:\autobuild > \3.2.0\frameworks\projects\framework\src\mx\core\Container.as:3681] > at mx.core::Container/createComponentsFromDescriptors()[C:\autobuild > \3.2.0\frameworks\projects\framework\src\mx\core\Container.as:3493] > at mx.containers::ViewStack/instantiateSelectedChild()[C:\autobuild > \3.2.0\frameworks\projects\framework\src\mx\containers\ViewStack.as: > 1140] > at mx.containers::ViewStack/commitProperties()[C:\autobuild > \3.2.0\frameworks\projects\framework\src\mx\containers\ViewStack.as: > 664] > at mx.containers::TabNavigator/commitProperties()[C:\autobuild > \3.2.0\frameworks\projects\framework\src\mx\containers\TabNavigator.as: > 504] > at mx.core::UIComponent/validateProperties()[C:\autobuild > \3.2.0\frameworks\projects\framework\src\mx\core\UIComponent.as:5807] > at mx.managers::LayoutManager/validateProperties()[C:\autobuild > \3.2.0\frameworks\projects\framework\src\mx\managers\LayoutManager.as: > 539] > at mx.managers::LayoutManager/doPhasedInstantiation()[C:\autobuild > \3.2.0\frameworks\projects\framework\src\mx\managers\LayoutManager.as: > 689] > at Function/http://adobe.com/AS3/2006/builtin::apply() > at mx.core::UIComponent/callLaterDispatcher2()[C:\autobuild > \3.2.0\frameworks\projects\framework\src\mx\core\UIComponent.as:8628] > at mx.core::UIComponent/callLaterDispatcher()[C:\autobuild > \3.2.0\frameworks\projects\framework\src\mx\core\UIComponent.as:8568] --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Maps API For Flash" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/google-maps-api-for-flash?hl=en -~----------~----~----~----~------~----~------~--~---
