Hi guys, I'm having a similar issue on rotating the device, and since the activity, the contained fragment and the list view get re-created on rotate, I don't think Android can take care of retaining the scroll state of the list view. Is there a way to do this without the need to set the activity not to re-create in the manifest?
Best regards, Mihai On Tuesday, April 7, 2009 9:00:01 PM UTC+3, Romain Guy wrote: > > ListView handles that already. The problem is that you are creating a > new adapter every time you reload the data. That's not how you should > use ListView and its adapter. Instead of setting a new adapter (which > causes ListView to reset its state), simply update the content of the > adapter already set on the ListView. And the selection/scroll position > will be saved for you. > > On Tue, Apr 7, 2009 at 7:36 AM, DavidG <dgu...@gmail.com <javascript:>> > wrote: > > > > In my app, my main class extends ListActivity and calls a fillData() > > function to reload the list whenever changes are made. I'm still > > getting the hang of this, so I borrowed that concept from the Android > > Notepadv1-Notepadv3 tutorials. Everything works great, however > > whenever I need to change the list (remove an item, re-sort it, edit > > an item), the ListView refreshes and loses its scroll position. The > > scroll position is reset to the top after each fillData() call. > > > > I saw the following thread a similar issue, but can't wrap my head > > around the solution: > > > http://groups.google.com/group/android-developers/browse_thread/thread/0b648ce2fe622463/7d40155d450d1196?lnk=raot > > > > > It appears to be resetting the scroll position to the top because I'm > > using setListAdapter() each time in fillData(), setting it to a new > > SimpleCursorAdapter. How can I get the list to "update in place", > > where the scroll position is seamlessly maintained to the user? I > > tried heading down the "items.changeCursor(cursor)" path, but that > > didn't seam to do much for me. Any help would be appreciated. Here's > > the code: > > > > private void fillData(boolean sortOption) { > > Cursor itemCursor = mDbHelper.fetchAllItems(sortOption); > > startManagingCursor(itemCursor); > > > > String[] from = new String[] { DbA.KEY_ITEM, DbA.DESCRIPTION, > > DbA.KEY_CHECKED }; > > int[] to = new int[] { R.id.itemText, R.id.itemDescription, > > R.id.content }; > > > > SimpleCursorAdapter items = new SimpleCursorAdapter > > (this,R.layout.item_row, itemCursor, from, to); > > items.setViewBinder(new ItemBinder()); > > setListAdapter(items); > > } > > > > > > > > > > > -- > Romain Guy > Android framework engineer > roma...@android.com <javascript:> > > 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 android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
