android - Adapter returning same item twice -

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i have listview holding items. shows result of search in database, 2 items meets criteria of select sentence.

when search first time, returns twice same item. but, when click search button again, time done ok, showing both items. items first time?

adapter:

public class listaexpedientesadapter extends baseadapter {  private arraylist<beanlistaexpedientes> listaexpedientes; private layoutinflater inflater=null; private context c;  public listaexpedientesadapter(context c, arraylist<beanlistaexpedientes> lista){     this.listaexpedientes=lista;     inflater=layoutinflater.from(c);     this.c=c; }  @override public int getcount() {     return listaexpedientes.size(); }  @override public object getitem(int position) {      return listaexpedientes.get(position); }  @override public long getitemid(int position) {     return position; }  @override public view getview(int position, view convertview, viewgroup parent) {       viewholder holder;     if(convertview==null){         convertview=inflater.inflate(r.layout.search_exp_adapter_layout, null);         holder=new viewholder();         holder.numexp=(textview)convertview.findviewbyid(r.id.textnumexp);         holder.nombrecomercial=(textview)convertview.findviewbyid(r.id.textnombrecomercial);         holder.nombrecompleto=(textview)convertview.findviewbyid(r.id.textnombrecompleto);         holder.foto=(imageview)convertview.findviewbyid(r.id.searchfoto);         holder.codficha=(textview)convertview.findviewbyid(r.id.textviewcodficha);         holder.numexp.settext(string.valueof(listaexpedientes.get(position).getnumexp()));         holder.nombrecompleto.settext(string.valueof(listaexpedientes.get(position).getnombrecompleto()));         holder.nombrecomercial.settext(string.valueof(listaexpedientes.get(position).getnombrecomercial()));         holder.foto.setimagebitmap(bitmap.createscaledbitmap(bitmapfactory.decodefile(listaexpedientes.get(position).getfoto()),dptopx(80), dptopx(80), true));         holder.codficha.settext(string.valueof(listaexpedientes.get(position).getcodficha()));     }else{         holder = (viewholder) convertview.gettag();     }      if(holder==null){         holder=new viewholder();     }        return convertview; }  private int dptopx(int dp) {     float density = c.getresources().getdisplaymetrics().density;     return math.round((float)dp * density); } static class viewholder{     textview numexp;     textview nombrecompleto;     textview nombrecomercial;     imageview foto;     textview codficha;  } }

the piece of code sql sentence launched (its inside thread):

cursor csr=db.rawquery(sentencia, null); listaexpedientes=new arraylist<beanlistaexpedientes>();         if(csr.movetofirst()){                   {                      codficha=csr.getlong(3);                      codexpediente=csr.getlong(15);                      nombrecompleto=csr.getstring(8);                      nombrecomercial=csr.getstring(13);                       cursor csr2=db.rawquery("select path fotos codficha="+codficha+" limit 1", null);                      if(csr2.movetofirst()){                            path=csr2.getstring(0);                                              } listaexpedientes.add(new beanlistaexpedientes(path, nombrecomercial, nombrecompleto, codexpediente, codficha));                       }while (csr.movetonext());                             refreshadapter();                             adapter.notifydatasetchanged();

those lines

 holder.numexp.settext(string.valueof(listaexpedientes.get(position).getnumexp()));  holder.nombrecompleto.settext(string.valueof(listaexpedientes.get(position).getnombrecompleto()));  holder.nombrecomercial.settext(string.valueof(listaexpedientes.get(position).getnombrecomercial()));  holder.foto.setimagebitmap(bitmap.createscaledbitmap(bitmapfactory.decodefile(listaexpedientes.get(position).getfoto()),dptopx(80), dptopx(80), true));  holder.codficha.settext(string.valueof(listaexpedientes.get(position).getcodficha()));

go outside if/else logic. getview called @ least getcount times, once convertview = null

edit,

after initalize holder, when convertview null, don't forget call convertview.settag(holder)


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