You have to remember that you don't really have 100 items in your listview... You have 100 items in you adapter. The listview, because of view recycling for performance reasons, only has a few more children than the number that shows up on the screen.
Thanks, Justin Anderson MagouyaWare Developer http://sites.google.com/site/magouyaware On Fri, Mar 9, 2012 at 1:08 PM, Justin Anderson <[email protected]>wrote: > Nope... you've got it backwards. > > It would be: > getListView().getChildAt(50 - getListView().getFirstVisiblePosition())) > > > Thanks, > Justin Anderson > MagouyaWare Developer > http://sites.google.com/site/magouyaware > > > On Fri, Mar 9, 2012 at 1:03 PM, RedBullet <[email protected]>wrote: > >> Really? >> >> So, if I have 100 items in my ListView, and I want to be monkeying around >> with item #50 I would do: >> getListView().getChild(getListView().getFirstVisiblePosition() - 50)) ? >> >> that doesn't seem right... >> >> >> On Friday, March 9, 2012 2:42:29 PM UTC-5, MagouyaWare wrote: >> >>> Didn't mean to send that yet... >>> >>> You can calculate the correct index by using this: >>> http://developer.android.com/**reference/android/widget/** >>> AdapterView.html#**getFirstVisiblePosition%28%29<http://developer.android.com/reference/android/widget/AdapterView.html#getFirstVisiblePosition%28%29> >>> >>> You subtract the position in the adapter from the first visible position. >>> >>> Thanks, >>> Justin Anderson >>> MagouyaWare Developer >>> http://sites.google.com/site/**magouyaware<http://sites.google.com/site/magouyaware> >>> >>> >>> On Fri, Mar 9, 2012 at 12:41 PM, Justin Anderson <> wrote: >>> >>>> Try using this: >>>> http://developer.android.com/**reference/android/view/** >>>> ViewGroup.html#getChildAt%**28int%29<http://developer.android.com/reference/android/view/ViewGroup.html#getChildAt%28int%29> >>>> >>>> However, beware that the child index is not necessarily the same as the >>>> position of the item in the ArrayAdapter due to view recycling. But you >>>> can get the correct index >>>> >>>> Thanks, >>>> Justin Anderson >>>> MagouyaWare Developer >>>> http://sites.google.com/site/**magouyaware<http://sites.google.com/site/magouyaware> >>>> >>>> >>>> >>>> On Fri, Mar 9, 2012 at 12:32 PM, RedBullet <> wrote: >>>> >>>>> So, I have a class that implements ListActivity, and it loads up a a >>>>> list of turns for turn-by-turn navigation. >>>>> >>>>> Essentially I want to decorate the item that is the next waypoint in >>>>> the list, and when you arrive, de-decorate and decorate the next waypoint >>>>> in the list. >>>>> >>>>> So, I have been noodling this, but haven't figured out how to do this >>>>> yet. >>>>> >>>>> I know I can call setSelected(int) to say which item is the current >>>>> one, but I don't see how I can get the view associated with the currently >>>>> selected item. >>>>> >>>>> I don't think getView is right since I am not populating the ListView. >>>>> >>>>> Any ideas? >>>>> >>>>> -- >>>>> >>>>> >>>> >>> -- >> 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 >> > > -- 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
