notityDataSetChanged rebuilds the view list, so yes, that could cause UI
events to be missed.
As far as updating an {Expandable}ListView in a more efficient way - if
you just need to refresh a few UI widgets - this can be done by:
- Asking the list view for the currently visible range of item views:
getFirstVisiblePosition / getLastVisiblePosition
- Iterating over these positions, calling getChildView to get their
views, remembering that child views are always numbered starting at 0,
even if the view is scrolled down.
- Reaching into the item views by calling childView.findViewById and
"pushing" changes with textView.setText, etc.
Don't forget also that a list view can be out of sync with its adapter
(a layout is pending, but not yet performed), so to get a particular
item view's data item, use a tag set inside get{Child|Group}View, and
not the adapter's getChild / getGroup.
-- Kostya
01.11.2011 12:35, Ash пишет:
It is found that on several occasions the button click on the image
button is ignored. Could this be related to the notifyDataSetChanged
being called every second? If I stop my timer then button clicks are
more responsive.
Can you please advice if there is other way of displaying a timer on
the group view or the way I am currently doing it is acceptable?
--
Kostya Vasilyev
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