pass map between views in a ViewNavigatorApplication

Question

What I am trying to do is develop a simple mobile application in Flash 4.6.  I am trying to add layers to a main view based on what is selected in the Table of contents view in a second view.  It is a series of check boxes that I would like to select maps and load those into the main map.  I have most of the functionality worked out I just can't get the map reference to pass to the other views.

YannCabon · Answer

Hi,

Can you verify that "myMap" in not null before calling pushView ?

MAGICMuscatineAreaGeographicIn · Answer

Ok don't think I have this set up right.  I have two views in a tabbed view navigator mobile app.  I have been trying to pass the map from the Map View to the TOC view so I can turn layers on and off then push back to the map view.  Here are my functions.

Map View Function

private function onClick(event:MouseEvent):void {
    
navigator.pushView(views.ToolsView,myMap);
    
    
}

"myMap" is the id of the map on the map view.

TOC View Functions

protected var map:Map;
override public function set data(value:Object):void{
    super.data = value;
    map = value as Map;
   }

Trying to add layer to map
if (cb.selected)
    {
     control = new ArcGISDynamicMapServiceLayer("http://xyz/arcgis/rest/services/MAGIC_Landbase/MuscatineCo_SurveyControl/MapServer");
     
     control.visible = true;
     map.addLayer(control)
}

It always errors on the map.addLayer saying cannot access property with null object reference.  I am very new to the mobile framework, so trying to use the examples that were posted.

DasaPaddock · Answer

You can pass the map as the data parameter to pushView().

See:
http://www.realeyes.com/blog/2011/05/16/mobile-flex-view-data/
http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/spark/components/ViewNavigator.html#pushView()