Thanks! The fact that it's used to 'tell the list view to stop using the adapter' might actually explain an issue i have with a list of images i show in my own app. :)
On May 28, 12:31 pm, Romain Guy <[email protected]> wrote: > 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- Hide quoted text - > > - Show quoted text - --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
