Hi, My app uses spark ButtonBar with a custom skin (for first, middle, and last
buttons), and I change the contents of the button bar a lot depending on
various user selections. The icon in the button bar updates when the
dataProvider changes, relying on a doPhasedInstantiationCallback() trigger to
call measure() function in the first button's custom skin:
override protected function measure():void {
setButtonImage(); // set icon for button here
super.measure();
}
Certain combinations of changing the dataProvider for the ButtonBar result in
the ButtonBar's first button icon not refreshing. The myButtonBar.dataProvider
contents are always correct, but the measure() and validateDisplayList() are
not called in the first button's custom skin when the dataProvider changes.
This only effects the first button in the button bar, the other buttons update
fine. It could be coincidence, but when the first button is selected in the
button bar before the dataProvider update, and the first button (by default) is
selected in new button bar after the dataProvider changes, there is no
doPhasedInstantiationCallback() for the first button (although there are for
the other buttons). When I click on a button other than the first button in the
button bar, the first button's icon is refreshed.
Any idea how to force a doPhasedInstantiationCallback() for the first button?
I tried myButtonBar.invalidateDisplayList() but this didn't result in calling
the first button skin's validateDisplayList() function or trigger
doPhasedInstantiationCallback() from what I can see.
I also tried to force a redraw using techniques like
ArrayCollection(myButtonBar.dataProvider).refresh();
even using a CallLater(), but still no luck. The first button's skin functions
are not invoked.
I've run out of ideas how to tackle this problem. Thanks in advance for any
advice.
