Hi all, I thank all for your answers. I've understood the "strange" behaviour that doesn't makes my ListView to refreshes correctly.
Here is the link where I've found the solution: https://groups.google.com/forum/?fromgroups#!topic/android-developers/2Ub4yhyKumM This topic clearly explains that, when the callback method "getView" is called, the parameter "convertView" is null only when ListView tries to draw the first 5 items, from "A" to "E". When I scroll down the content of the list, and the ListView draws the items 6 and 7, it "reuses" the views previoulsy created, hence "convertView" is not null and my getView implementation goes into "else" branch. What I've missed was to bind the "old" view, with the "new" model item getting showed. So the fix was simply to add, in this branch, the update of the bind between "recycled" view and model item. HTH Sergio Il giorno giovedì 26 luglio 2012 12:59:05 UTC+2, Sergio Panico ha scritto: > > Hi all, > I need your help to understand the refresh behaviour of a ListView where > I've defined a my custom view for the ListView's items. > > I think It's better explain it with an example: > my adapter contains 7 items: A, B, C, D, E, F, G correctly initialized, > filled and working. The associated ListView shows 5 (out of 7) items: A, B, > C, D, E. > The problem is that, when I scroll down the ListView's content instead of > showing me items F and G, I've got A and B items again. I understood that > this is "only" a viewing issue becouse the model elements associated with > the last two items, correctly belong to F and G items. :| > > Following the ovveride of getView(...) method of my adapter (extending > BaseAdapter): > > @Override > public View getView(int position, View convertView, ViewGroup parent) { > MyItemView miv = (( MyItemView ) convertView); > > if (context == null) return null; > > if (convertView == null) { > miv = new MyItemView (........); > ..... > } else { > miv.refreshView(); //refresh the view content > } > > return miv; > } > > and the refreshView() method of MyItemView (extending LinearLayout): > > @Override > public void refreshView() { > label1.setText(......); > label2.setText(......); > label2.setText(......); > > invalidate(); > } > > Thanks a lot to all! > Bye > Sergio > -- 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
