hello friends,
I have implemented one Flex application in which I want to display 3D
google map.In which I am getting the error the NUll object reference during map display.
Here is my code:-
import com.
google.maps.controls.MapTypeControl;
import adobe.utils.XMLUI;
import mx.rpc.events.FaultEvent;
import mx.controls.Alert;
import generated.webservices.*;
import mx.collections.ArrayCollection;
import mx.controls.*;
import generated.webservices.*;
import com.
google.maps.LatLng;
import com.
google.maps.Map3D;
import com.
google.maps.MapEvent;
import com.
google.maps.MapMouseEvent;
import com.
google.maps.
services.GeocodingEvent;
import com.
google.maps.
services.ClientGeocoder;
import com.
google.maps.overlays.Marker;
import com.
google.maps.InfoWindowOptions;
import com.
google.maps.MapOptions;
import com.
google.maps.MapType;
import com.
google.maps.View;
import com.
google.maps.controls.NavigationControl;
import com.
google.maps.geom.Attitude;
import mx.controls.Alert;
[Bindable]
private var childName:ArrayCollection;
[Bindable]
private var childId:ArrayCollection;
private var photoFeed:ArrayCollection;
private var trackinginfochild:TrackingInfo;
private var arrayOfchild:Array;
private var newEntry:GetSBTSMobileAuthentication;
private var trackinginfo:GetSBTSTrackingInfo;
private var childObj:Child;
private var UserId:int;
private var lat:int;
private var long:int;
private var latlong:LatLng;
public var user:SBTSWebService;
public function authentication():void
{
// Instantiate a new Entry object.
user = new SBTSWebService();
if(user!=null)
{
user.addSBTSWebServiceFaultEventListener(handleFaults);
user.addgetSBTSMobileAuthenticationEventListener(authenticationResult);
newEntry = new GetSBTSMobileAuthentication();
if(newEntry!=null)
{
newEntry.mobile=mobileno.text;
newEntry.password=password.text;
user.getSBTSMobileAuthentication(newEntry);
}
}
}
public function handleFaults(event:FaultEvent):void
{
Alert.show("A fault occured contacting the server. Fault message is: " + event.fault.faultString);
}
public function authenticationResult(event:GetSBTSMobileAuthenticationResultEvent):void
{
if(event.result != null && event.result._return>0)
{
if(event.result._return > 0)
{
UserId = event.result._return;
loginform.enabled = false;
getChildList(UserId);
viewstack2.selectedIndex=1;
}
else
{
Alert.show("Authentication fail");
}
}
}
public function getChildList(userId:int):void
{
var childEntry:GetSBTSMobileChildrenInfo = new GetSBTSMobileChildrenInfo();
childEntry.UserId = userId;
user.addgetSBTSMobileChildrenInfoEventListener(sbtsChildrenInfoResult);
user.getSBTSMobileChildrenInfo(childEntry);
}
public function sbtsChildrenInfoResult(event:GetSBTSMobileChildrenInfoResultEvent):void
{
if( event.result._return!=null)
{
arrayOfchild = event.result._return as Array;
photoFeed = new ArrayCollection(arrayOfchild);
childName = new ArrayCollection();
for( var count:int=0;count<photoFeed.length;count++)
{
childObj = photoFeed.getItemAt(count,0) as Child;
childName.addItem(childObj.strName);
}
}
}
private function trackingInfo():void
{
for( var count:int=0;count
user.getSBTSTrackingInfo(trackinginfo);
}
}
}
}
private function getTrackingInfo(event:GetSBTSTrackingInfoResultEvent):void
{
if(event.result._return != null)
{
trackinginfochild = event.result._return as TrackingInfo;
lat = trackinginfochild.dblLatitude;
long = trackinginfochild.dblLongitude;
latlong = new LatLng(lat,long);
}
}
private function onMapPreinitialize(event:MapEvent):void {
var myMapOptions:MapOptions = new MapOptions();
myMapOptions.zoom = 12;
myMapOptions.center = latlong;
myMapOptions.mapType = MapType.NORMAL_MAP_TYPE;
myMapOptions.viewMode = View.VIEWMODE_PERSPECTIVE;
myMapOptions.attitude = new Attitude(20,30,0);
buslocation.setInitOptions(myMapOptions);
buspath.setInitOptions(myMapOptions);
}
private function onMapReady(event:MapEvent):void
{
this.buslocation.addControl(new NavigationControl());
this.buslocation.addControl( new MapTypeControl());
}
]]>
<mx:Move id="hideEffect"
yTo="-500" />
<mx:Move id="showEffect"
xFrom="500"/>
<mx:Panel width="100%" height="100%"
headerColors="[#000000,#FFFFFF]" hideEffect="{hideEffect}" showEffect="{showEffect}">
<mx:TabNavigator id="viewstack2" selectedIndex="0" creationPolicy="all"
width="100%" height="100%">
<mx:Form label="Login Form" id="loginform" hideEffect="{hideEffect}" showEffect="{showEffect}">
<mx:FormItem label="Mobile NO:" creationPolicy="all">
<mx:TextInput id="mobileno"/>
</mx:FormItem>
<mx:FormItem label="Password:" creationPolicy="all">
<mx:TextInput displayAsPassword="true" id="password" />
</mx:FormItem>
<mx:FormItem>
<mx:Button label="Login" click="authentication()"/>
</mx:FormItem>
</mx:Form>
<mx:Form label="Child List" id="childForm" hideEffect="{hideEffect}" showEffect="{showEffect}">
<mx:Label width="100%" color="blue"
text="Select Child."/>
<mx:RadioButtonGroup id="radioGroup" itemClick="trackingInfo()"/>
<mx:Repeater id="fieldRepeater"
dataProvider="{childName}">
<mx:RadioButton groupName="radioGroup"
label="{fieldRepeater.currentItem}"
value="{fieldRepeater.currentItem}"/>
</mx:Repeater>
</mx:Form>
<mx:Form label="Child Information" hideEffect="{hideEffect}" showEffect="{showEffect}">
<mx:FormItem>
<mx:DataGrid id="childinfo">
<mx:columns>
<mx:DataGridColumn headerText="Child Name" dataField="strName"/>
<mx:DataGridColumn headerText="School Name" dataField="strSchoolName"/>
<mx:DataGridColumn headerText="Pick Up Point" dataField="strPickUpPointName"/>
<mx:DataGridColumn headerText="Drop Down Point" dataField="strDropDownPointName"/>
</mx:columns>
</mx:DataGrid>
</mx:FormItem>
<mx:FormItem>
<mx:Button label="click here to see bus location"/>
</mx:FormItem>
</mx:Form>
<mx:Form label="Bus Location" hideEffect="{hideEffect}" showEffect="{showEffect}">
<maps:Map3D xmlns:maps="com.
google.maps.*" mapevent_mappreinitialize="onMapPreinitialize(event)" id="buslocation"
width="100%" height="100%" url="http://code.
google.com/apis/maps/" key="ABQIAAAAXuX6aG-r_N0-tQNxUEV-vRSE8al1BQssMxLXJiP75kIjR3ssLxT3D52_u94hI-dMIkD72FmnK-P4og"/>
</mx:Form>
<mx:Form label="Bus path" hideEffect="{hideEffect}" showEffect="{showEffect}">
<maps:Map3D xmlns:maps="com.
google.maps.*" mapevent_mappreinitialize="onMapPreinitialize(event)" id="buspath"
width="100%" height="100%" url="http://code.
google.com/apis/maps/" key="ABQIAAAAXuX6aG-r_N0-tQNxUEV-vRSE8al1BQssMxLXJiP75kIjR3ssLxT3D52_u94hI-dMIkD72FmnK-P4og"/>
</mx:Form>
</mx:TabNavigator>
</mx:Panel>
I am getting this error :-
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at com.
google.maps.geom::Geometry$/computeSeparatingAxes()
at com.
google.maps.geom::TileEnumerator/enumerateTiles()
at com.
google.maps.core::PerspectiveTilePane/computeOptimalSet()
at com.
google.maps.core::PerspectiveTilePane/render()
at com.
google.maps.core::PerspectiveTilePane/configure()
at com.
google.maps.managers::PerspectiveTileManager/updateView()
at com.
google.maps.managers::PerspectiveTileManager/initializePanes()
at com.
google.maps.managers::PerspectiveTileManager/onInitialize()
at MethodInfo-190()
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.core::UIComponent/dispatchEvent()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\core\UIComponent.as:9298]
at com.
google.maps.wrappers::BaseEventDispatcher/dispatchEvent()
at com.
google.maps.wrappers::EventDispatcherWrapper/dispatchEvent()
at com.
google.maps.core::MapImpl/size()
at com.
google.maps.core::MapImpl/setSize()
at com.
google.maps.wrappers::IMapWrapper/setSize()
at com.
google.maps::Map/internalSetSize()
at com.
google.maps::Map/onUIComponentResized()
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.core::UIComponent/dispatchEvent()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\core\UIComponent.as:9298]
at mx.core::UIComponent/dispatchResizeEvent()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\core\UIComponent.as:7077]
at mx.core::UIComponent/setActualSize()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\core\UIComponent.as:6706]
at mx.containers.utilityClasses::BoxLayout/updateDisplayList()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\containers\utilityClasses\BoxLayout.as:219]
at mx.containers::Form/updateDisplayList()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\containers\Form.as:375]
at mx.core::UIComponent/validateDisplayList()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\core\UIComponent.as:6351]
at mx.core::Container/validateDisplayList()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\core\Container.as:2677]
at mx.managers::LayoutManager/validateDisplayList()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\managers\LayoutManager.as:622]
at mx.managers::LayoutManager/doPhasedInstantiation()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\managers\LayoutManager.as:695]
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]
Please resolve my issue.
