android - listview is not updating with notifydataSetChanged -

my listview not updating data retrieved after first 20 items.

i checked multiple times if data not passed json, is, listview not updating added data.

here part of code:

@override public void ongetdata(jsonobject obj) {     serie[] serieslist;     if (obj != null) {         if (pagenumber == 1) {             series = serie.serielistfromjson(this, jsonhandling                     .getinstance().getjsonarrayseriefromurltmdb(obj));             serieslist = series.toarray(new serie[series.size()]);             adapter = new searchcustomadapter(this, serieslist);             lvsearch = (listview) findviewbyid(r.id.lvsearch);             lvsearch.setadapter(adapter);             lvsearch.setonscrolllistener(this);         } else {              try {                 toast.maketext(this, "obj ?"+obj.tostring(1), toast.length_long).show();             } catch (jsonexception e) {                 // todo auto-generated catch block                 e.printstacktrace();             }             //adapter.clear(); getting unsupportedmethod exeption             series.addall(serie.serielistfromjson(this, jsonhandling                     .getinstance().getjsonarrayseriefromurltmdb(obj)));             serieslist = series.toarray(new serie[series.size()]);             adapter.notifydatasetchanged();         }     }     if (obj == null) {         toast.maketext(this, "obj null", toast.length_long).show();         serie serie = new serie("not found", "");         serieslist = new serie[series.size()];         serieslist[0] = serie;         adapter = new searchcustomadapter(this, serieslist);         lvsearch = (listview) findviewbyid(r.id.lvsearch);         lvsearch.setadapter(adapter);     } }  @override public void onscroll(abslistview view, int firstvisibleitem,         int visibleitemcount, int totalitemcount) {         this.currentfirstvisibleitem = firstvisibleitem;         this.currentvisibleitemcount = visibleitemcount;         this.currenttotalitemcount=totalitemcount;   }  @override public void onscrollstatechanged(abslistview view, int scrollstate) {     this.currentscrollstate = scrollstate;      if(( currentfirstvisibleitem+currentvisibleitemcount) == currenttotalitemcount){         this.isscrollcompleted();         adapter.notifydatasetchanged();     }   }  private void isscrollcompleted() {     if (this.currentvisibleitemcount > 0 && this.currentscrollstate == scroll_state_idle) {         pagenumber++;         jsonhandling.getinstance().getjsonfromurl(tvtitel.gettext().tostring(), tvyear.gettext().tostring(), iof, pagenumber);         adapter.notifydatasetchanged();     } 

}

so please tell me did wrong or missed?

edit: added code adjust ments in onscrollstatechange. still not sure why should there , not on data though.

also here per requested searchcustumadapter :

public class searchcustomadapter extends arrayadapter<serie> {  private final context context; private final serie[] values;  public searchcustomadapter(context context, serie[] values) {     super(context, r.layout.search_row_layout, values);     this.context = context;     this.values = values; }  @override public view getview(int position, view convertview, viewgroup parent) {      if(convertview==null)     {     layoutinflater inflater = (layoutinflater) context             .getsystemservice(context.layout_inflater_service);     view rowview = inflater.inflate(r.layout.search_row_layout,             parent, false);      textview textviewtitle = (textview) rowview             .findviewbyid(r.id.searchrowtitle);     textview textviewyear = (textview) rowview             .findviewbyid(r.id.searchrowyear);     textviewtitle.settext(values[position].gettitle());     textviewyear.settext(values[position].getyear());       return rowview;       }     else     {         textview textviewtitle = (textview) convertview                 .findviewbyid(r.id.searchrowtitle);         textview textviewyear = (textview) convertview                 .findviewbyid(r.id.searchrowyear);          textviewtitle.settext(values[position].gettitle());         textviewyear.settext(values[position].getyear());          return convertview;     } } 

}

update 2: changed code on onscrollcompleted have part of code:

            pagenumber++;         jsonhandling.getinstance().getjsonfromurl(tvtitel.gettext().tostring(), tvyear.gettext().tostring(), iof, pagenumber);         series.addall(serie.serielistfromjson(this, jsonhandling.getinstance().getjsonarrayseriefromurltmdb(obj)));                          serieslist = series.toarray(new serie[series.size()]);                 lvsearch.setadapter(new searchcustomadapter(this, serieslist)); 

this work, should not way... right?

in

onscrollstatechanged method notifying list view not changing data 

so try call

ongetdata(jsonobject obj) in onscroll may you.