public class LvAdapter extends BaseAdapter{

    LayoutInflater mInflater;
    private Context context;
    public LvAdapter(Context c){
         mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
         context = c;
    }

    @Override
    public int getCount() {
        return cGlobal.listOfWork.size();
    }

    @Override
    public Object getItem(int arg0) {
        return arg0;
    }

    @Override
    public long getItemId(int arg0) {
        return arg0;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup arg2) {
        final ViewHolder holder;
        convertView=null;
    if (convertView == null) {
        holder = new ViewHolder();

        convertView = mInflater.inflate(R.layout.activity_produced_quantities_rows, null); // this is your cell

        holder.quantity = (EditText) convertView.findViewById(R.id.txtQuantity);
        holder.quantity.setTag(position);

        convertView.setTag(holder);
        }
        else {
            holder = (ViewHolder) convertView.getTag();
        }
    return convertView;
    }
   }

public class ViewHolder {
        EditText quantity;
}

public void isEmpty(){
   boolean isAnyEmpty=true;
   for (int i=0;i<quantityCheckList.size();i++){
        View view =  lvQuestion.getAdapter().getView(i, null, null);
        EditText quantity = (EditText) view.findViewById(R.id.txtQuantity);
        quantity.requestFocus();
        quantity.setError("asdasda");
        isAnyEmpty=false;
        break;
   }
}