notifyDataSetInvalidated() is used when the adapter loses all of its content. It's there to tell ListView to stop using the adapter basically. This is usually invoked when you have a Cursor and you call close() on the Cursor.
On Thu, May 28, 2009 at 9:27 AM, Streets Of Boston <[email protected]> wrote: > > Aha! I stand corrected. > That is not what i understood from the API documentation... > > Romain, > could you describe the exact differences (and usage example) of the > two? > > Thanks! > > About calling 'invalidate()': > Does calling invalidate() on a list-item's View cause the 'getView()' > method of an Adpater to be called? > If i'm not mistaken, getView() does not get called on 'invalidate()'. > But i could be wrong. TWan may need the adapter's getView() to be > called for specific items to properly update the items' views. > > On May 28, 12:17 pm, Romain Guy <[email protected]> wrote: >> No, notifyDataSetInvalidated() causes the entire content of ListView >> to disappear. It's even more inefficient than notifyDataSetChanged(). >> >> If you want to refresh the content of a specific item, call >> invalidate() on its View. If you changed the content of the Adapter >> though, call notifyDataSetChanged(). >> >> -- >> Romain Guy >> Android framework engineer >> [email protected] >> >> Note: please don't send private questions to me, as I don't have time >> to provide private support. All such questions should be posted on >> public forums, where I and others can see and answer them > > > -- Romain Guy Android framework engineer [email protected] Note: please don't send private questions to me, as I don't have time to provide private support. All such questions should be posted on public forums, where I and others can see and answer them --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
