android - addTextChangedListener is not working inside Base Adapter -

i have implemented customized listview name,price,quantity etc,

by default quantity 1 in list items.

if user changes 1 of list item's quantity 1 2 , changed quantity has updated in sqlite database.

problem

i tried using addtextchangedlistener updated data user input , update in sqlite database well. addtextchangedlistener not working .

i unable update required field in database.

below code use addtextchangedlistener.

@override public view getview(final int position, view convertview, final viewgroup parent) {      view rowview = convertview;      if (convertview == null) {          // todo auto-generated method stub         layoutinflater inflater = (layoutinflater) context.getsystemservice(context.layout_inflater_service);           rowview = inflater.inflate(r.layout.list_items_cart, null);           holder.tv_name = (textview) rowview.findviewbyid(r.id.name_cart);         holder.tv_price = (textview) rowview.findviewbyid(r.id.price_cart);         holder.image = (imageview) rowview.findviewbyid(r.id.image_cart);         holder.tv_model = (textview) rowview.findviewbyid(r.id.model_cart);         holder.tv_product = (textview) rowview.findviewbyid(r.id.product_cart);         holder.delete = (button) rowview.findviewbyid(r.id.delete);         holder.quantity = (edittext) rowview.findviewbyid(r.id.quantity);         rowview.settag(holder);        }     else      holder = (holder) rowview.gettag();      holder.tv_name.settext(list_name.get(position));     name = holder.tv_name.gettext().tostring();     holder.tv_price.settext(list_price.get(position));     price = holder.tv_price.gettext().tostring();     holder.tv_model.settext(list_model.get(position));     model = holder.tv_model.gettext().tostring();     holder.tv_product.settext(list_productid.get(position));     product = holder.tv_product.gettext().tostring();     holder.quantity.settext(quant_items.get(position));     quant = holder.quantity.gettext().tostring();          holder.image.setimagebitmap(loadimagefromstorage(list_images.get(position)));     image_new = holder.image.tostring();       holder.quantity.addtextchangedlistener(new textwatcher() {         @override         public void beforetextchanged(charsequence s, int start, int count, int after) {          }          @override         public void ontextchanged(charsequence s, int start, int before, int count) {          }          @override         public void aftertextchanged(editable s) {              value = s.tostring().trim();             quant.replace(holder.quantity.gettext().tostring(), value);             updatetable();          }      });       final holder finalholder = holder;     holder.delete.setonclicklistener(new view.onclicklistener() {         @override         public void onclick(view v) {             databasehandler db = new databasehandler(context);             //sqlitedatabase db1 = db.getwritabledatabase();              // db.onupgrade(db1,0,1);               deleteuser(finalholder.tv_model.gettext().tostring());             listview list = (listview)parent;             cart_refresh.notifydatasetchanged();           list.setadapter(cart_refresh);               //  db.deletecontact(new cart(holder.tv_name.gettext().tostring(),holder.tv_price.gettext().tostring()             //     ,holder.image.tostring(),holder.tv_model.gettext().tostring()));         }     });       final view finalrowview = rowview;     rowview.setonclicklistener(new view.onclicklistener() {         @override         public void onclick(view v) {             string name_item = ((textview) finalrowview.findviewbyid(r.id.name_cart)).gettext().tostring();             string price_item = ((textview) finalrowview.findviewbyid(r.id.price_cart)).gettext().tostring();             model_item = ((textview) finalrowview.findviewbyid(r.id.model_cart)).gettext().tostring();              intent in = new intent(context, addcart_fullimage.class);             in.putextra("model", model_item);             in.putextra("name", name_item);             in.putextra("price", price_item);             context.startactivity(in);         }     });     return rowview; }     private bitmap loadimagefromstorage(string path) {      try {         file f = new file(path, "");         f.canread();         b = bitmapfactory.decodestream(new fileinputstream(f));         return b;       } catch (filenotfoundexception e) {         e.printstacktrace();     }      return null; } public void deleteuser(string username) {     final databasehandler db = new databasehandler(context);      sqlitedatabase db1 = db.getwritabledatabase();     try     {         db1.delete("cart", "model = ?", new string[]{username});           //cart_refresh.notifydatasetchanged();       }     catch(exception e)     {         e.printstacktrace();     }         {         db.close();     }    } public void updatetable() {     final databasehandler db = new databasehandler(context);      sqlitedatabase db1 = db.getwritabledatabase();     try {         db.updatecontact(new cart(name, price,image_new,model, product,value));      } catch (exception e) {      }    } 

any appreciable.

thanks.

your biggest issue is, you're using fields instead of local variables.

quant = holder.quantity.gettext().tostring(); 

updates quant every call getview() so

@override public void aftertextchanged(editable s) {     value = s.tostring().trim();     quant.replace(holder.quantity.gettext().tostring(), value);     updatetable(); } 

will use text field last bound data , not the 1 added listener to.

you need take care of scope of variables you're using , introduce consistency model.

i recommend complete rewrite of adapter without using fields.