problem with creatiocomplete event

Hi all

I call the function Encyclopedia event creationcomplete of canvas which is the component by default when add new mxml file in your project

private function init (): void

{

objIcity = new CityService();

cityArray = objIcity.GetCity ();

dgCity.dataProvider = cityArray;

dgCity.visible = true;

lnkBCity.selectedIndex = 1;

}

the problem here is that he receives the error on saying "BOLD" line

Cannot access a property or method of a null object reference. as I soar dgcity which is advancedatagrid in my design code is poster null it...

Why this is happening because there is the control in the design...

what I think this question can be as the creationcomplete controls are not created and yet it is why his error giving... If it's then where should the answer I call this function to bind the advancedatagrid

< mx:ViewStack id = "vsCity" borderStyle = "solid" width = "100%" height = "80%" color = '0 x 323232' >

< mx:VBox id = "vbAddCity" label = "Add City" backgroundColor = "0xDCDCDC" width = "100%" height = "100 percent" fontWeight = "bold" >

< mx:HBox >

< mx:Label id = "lblCityName" text = "Name of the city" / >

< mx:TextInput id = "txtCityName" / >

< / mx:HBox >

< mx:HBox >

< mx:Button id = "btnAdd" click = "chkSelection ()" label = "Add City" / > "

< mx:Button id = "btnCancel" click = "" txtCityName.text = "" label = "Cancel" / > "

< / mx:HBox >

< / mx:VBox >

< mx:VBox id = "vbViewCity" label = "View city" backgroundColor = "0xDCDCDC" width = "100%" height = "100 percent" fontWeight = "bold" horizontalAlign = "center" >

< mx:AdvancedDataGrid id = "dgCity" visible = "false" / >

< / mx:VBox >

< / mx:ViewStack > < / mx:VBox >

By default the ViewStack creates the first 'view' and its children. The value CreationPolicy = "all" and you should have no errors.

Setting creationPolicy = "all" can be a performance hit if there are many points of view with a lot of the user interface. In this case, you may need to find another way to make sure that everything that needs to exist in the creationComplete has been initialized.

If this post answers your question or assistance, please mark it as such. Thank you!

http://www.stardustsystems.com
Adobe Flex development and Support Services

Tags: Flex

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