You are doing this in the constructor so initialization hasn't
happened yet. Put this in an override of the createChildren method
and you should be in business.
Brandon
On Jul 22, 2009, at 1:31 PM, Marty Blood wrote:
I seem to remember from my training class that if you're
instantiating UIComponents in ActionScript you have to call their
initialize method before you can interact with them. You might give
that a shot.
-Marty
On Wed, Jul 22, 2009 at 12:17 PM, Robert Green <[email protected]
> wrote:
Has anyone been able to successfully load a TileList into an
ActionScript project without using MXML?
If so, can you please help me out?
Code Snippet:
public var t:TileList = new TileList();
public function Entertainment()
{
t.x = 5;
t.y = 5;
t.addItem( {label:'Robert', data:'Roebrt'} );
t.setSize(316, 251);
t.columnWidth = 310;
t.direction = ScrollBarDirection.VERTICAL;
t.cacheAsBitmap = true;
t.allowMultipleSelection = false;
//t.horizontalScrollPosition = 30;
t.setStyle("cellRenderer", Thumb);
addChild(t);
}
ERRORS:
I am trying to simply add a TileList component to my application.
The error I am getting is that nasty Error: #1009:
Main Thread (Suspended: TypeError: Error #1009: Cannot access a
property or method of a null object reference.)
fl.containers::BaseScrollPane/drawBackground
fl.controls::TileList/draw
fl.core::UIComponent/callLaterDispatcher
After review, the error occurs in the fl/containers/
BaseScrollPane.as file on line 983. This is because the following
method:
var bg:DisplayObject = background;
background = getDisplayObjectInstance(getStyleValue("skin")); //
This returns a NULL
background.width = width; // Here is the ERROR because I try to use
a property of a NULL object.
//---------------------------
I figured that this is something to do with the application trying
to draw the TileList before its time, or something to that effect.
I have no trouble adding a TileList component using Flash CS3 but in
this application it is complete as with NO Flash intervention nor
any MXML files, therefore dragging a component to the stage is not
an option.
//----------------------------
Has anyone run into a similar issue. In the above example, I am
simply using an AS file attempting to add a TileList component to
the stage. When I invoke the addChild(TileListComponentInstance) is
when I get the above error. If I comment out this line (addChild) I
will not get an error.!?!?
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