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Changing Flex3 ScrollBar maxScrollPosition at runtime

Developed by Jon

A quick tip if you have a dynamic scroll bar and want to bind it’s maxScrollPosition to a value at runtime unfortunately you can’t use the MXML binding, i.e. maxScrollPosition={value}.

Alternatively you need to set the value programatically in an event handler, AND importantly call updateDisplayList() on the scrollbar. i.e.

 
		<!--[CDATA[
			private function handleSlideChange():void {
				scroll.maxScrollPosition = slider.value;
				scroll.invalidateDisplayList();
			}
		]]-->

8 Comments

Astuces Adobe Flex, Adobe Coldfusion, Papervision 3D | Matsiya

May 9, 2008

[...]

Karthik

August 15, 2008

Great. It worked for me. Thanks for posting the solution.

Allen

October 30, 2008

Great!!! It works!
Thanx!
You are GROSSO!!

Dipz

November 27, 2008

Great work. But somehow I am not being able to run this in my project. Can u gimme a detailed example? Or is it any FLEX SDK version specific? I have noticed that this bug is mentioned in Adobe’s site. Although they have said that this bug has been resolved in Flex 3.0.X version.
Best regards
Dipz
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