Please help with ViewStack(Newbie here)

Question

Hello, this is probably a very simple question fo most of
you, but I just started learning Flex and have been trying
different things. So any help would be greatly appreciated.
What I'm doing now is creating a few simple visual components
with back and next buttons and I want to use viewstack,
particularly selectedindex, which is what someone recommended, to
cycle though them in the oder I like.
What are the recommended steps to follow to do this?

Answer 1

You could try something like this:
<mx:ViewStack id="stack">
<mx:Canvas label="First Child">
.....<mx:Button label="Next" click="stack.selectedIndex=1"
/>
</mx:Canvas>
<mx:Canvas label="Second">
.....<mx:Button label="Back"
click="stack.selectedIndex=0"/>
.....<mx:Button label="Next"
click="stack.selectedIndex=2"/>
</mx:Canvas>
</mx:ViewStack>
That's not a very programmatic way to it, but it gets the job
done. What I would do is put the Next and Back buttons outside of
the ViewStack and then you do it a bit more programmatically:
<mx:Button label="Next">
<mx:click><![CDATA[
if( stack.selectedIndex+1 < stack.numChildren )
stack.selectedIndex = stack.selectedIndex +1;
]]></mx:click>
</mx:Button>