masalah dg redraw lisview / repeating

MyListAdapter.java

package com.dwidasa.mpos;

import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

import com.dwidasa.mpos.model.MenuItem;

import java.util.ArrayList;

/**
 * Created by dodyrw on 1/18/15.
 */
public class SearchItemListAdapter extends BaseAdapter {

    private Context mContext;

    private ArrayList<MenuItem> list = new ArrayList<MenuItem>();

    public static final int TYPE_1 = 1;
    public static final int TYPE_2 = 0;

    private ArrayList<Integer> categList = new ArrayList<>();

    public SearchItemListAdapter(Context c, ArrayList<MenuItem> newList) {
        mContext = c;
        this.list = newList;
    }

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

    @Override
    public Object getItem(int position) {
        return list.get(position).getItemName();
    }

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

    public int getItemType(int position) {
        return TYPE_2;
//        return list.get(position).getCategory();
    }

    @Override
    public int getItemViewType(int position) {
        // get category id, compare with categList
        // if exist show layout 1 (no categ)
        // if not show layout 2 (with categ)

        int categ = list.get(position).getCategory();
        int type;

        if (categList.contains(categ)) type = TYPE_1; // no categ
        else type = TYPE_2; // with categ

        categList.add(categ);

        return type;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View view = convertView;

        int type = getItemViewType(position);

        if (type == TYPE_2) {
            //if (convertView == null) {
                LayoutInflater vi = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                view = vi.inflate(R.layout.search_item_item_with_categ, null);
//            }

            String categName = "";
            int categ = list.get(position).getCategory();

            if (categ == 1) categName = "Appetizer";
            else if (categ == 2) categName = "Main Course";
            else if (categ == 3) categName = "Dessert";
            else if (categ == 4) categName = "Drink";

            Log.e("MPOS","categ: "+categ+" : "+categName+" : "+list.get(position).getItemName());

            TextView txtCode = (TextView) view.findViewById(R.id.code_textview);
            TextView txtItemName = (TextView) view.findViewById(R.id.item_name_textview);
            TextView txtCateg = (TextView) view.findViewById(R.id.category_textview);

            txtCode.setText(list.get(position).getCode());
            txtItemName.setText(list.get(position).getItemName());
            txtCateg.setText(categName);
        } else {
//            if (convertView == null) {
                LayoutInflater vi = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                view = vi.inflate(R.layout.search_item_item_no_categ, null);
//            }

            TextView txtCode = (TextView) view.findViewById(R.id.code_textview);
            TextView txtItemName = (TextView) view.findViewById(R.id.item_name_textview);

            txtCode.setText(list.get(position).getCode());
            txtItemName.setText(list.get(position).getItemName());
        }

        return view;
    }

    static class ViewHolderNoCateg {
        TextView code;
        TextView itemName;
        TextView categoryName;
    }
}