java - BaseAdapter Custom Filter Trouble -

hi im trying create customfilter baseadapter , not having luck .. query database array of id, name , sex. , on listview wish search list have implemented textview , have had no luck code. here customadapter

public class mycustombaseadapter extends baseadapter { private static arraylist<custom> alist;  private layoutinflater inflat;  public mycustombaseadapter(context context, arraylist<custom> results) {     alist = results;     inflat = layoutinflater.from(context); }  public int getcount() {     return alist.size(); }  public object getitem(int position) {     return alist.get(position); }  public long getitemid(int position) {     long.parselong(alist.get(position).getid());     return position; }  public view getview(int position, view convertview, viewgroup parent) {     viewholder holder;     if (convertview == null) {         convertview = inflat.inflate(r.layout.suspect_list, null);         holder = new viewholder();         holder.txtname = (textview) convertview.findviewbyid(r.id.suspect_name);         holder.txtsex = (textview) convertview.findviewbyid(r.id.suspect_sex);         holder.txtid = (textview) convertview.findviewbyid(r.id.suspect_id);          convertview.settag(holder);     } else {         holder = (viewholder) convertview.gettag();     }      holder.txtname.settext(alist.get(position).getname());     holder.txtsex.settext(alist.get(position).getsex());     holder.txtid.settext(alist.get(position).getid());      return convertview; }  static class viewholder {     textview txtname;     textview txtsex;     textview txtid; } 

}

i used custom filter in multiselectionlist. here code.

please download demo, run , try understand , use code per needs modification per requirement.

thanks.