介绍通过方法

 @Override
 public boolean areAllItemsEnabled() {
     return false;
 }

@Override
public boolean isEnabled(int position) {
    return !mStrings[position].startsWith("-");
}

/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.android.apis.view;

// Need the following import to get access to the app resources, since this
// class is in a sub-package.
import android.app.ListActivity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.view.LayoutInflater;
import android.widget.BaseAdapter;
import android.widget.TextView;


/**
 * A list view example with separators.
 */
public class List5 extends ListActivity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setListAdapter(new MyListAdapter(this));
    }

    private class MyListAdapter extends BaseAdapter {
        public MyListAdapter(Context context) {
            mContext = context;
        }

        public int getCount() {
            return mStrings.length;
        }

        @Override
        public boolean areAllItemsEnabled() {
            return false;
        }

        @Override
        public boolean isEnabled(int position) {
            return !mStrings[position].startsWith("-");
        }

        public Object getItem(int position) {
            return position;
        }

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

        public View getView(int position, View convertView, ViewGroup parent) {
            TextView tv;
            if (convertView == null) {
                tv = (TextView) LayoutInflater.from(mContext).inflate(
                        android.R.layout.simple_expandable_list_item_1, parent, false);
            } else {
                tv = (TextView) convertView;
            }
            tv.setText(mStrings[position]);
            return tv;
        }

        private Context mContext;
    }
    
    private String[] mStrings = {
            "----------",
            "----------",
            "Abbaye de Belloc",
            "Abbaye du Mont des Cats",
            "Abertam",
            "----------",
            "Abondance",
            "----------",
            "Ackawi",
            "Acorn",
            "Adelost",
            "Affidelice au Chablis",
            "Afuega'l Pitu",
            "Airag",
            "----------",
            "Airedale",
            "Aisy Cendre",
            "----------",
            "Allgauer Emmentaler",
            "Alverca",
            "Ambert",
            "American Cheese",
            "Ami du Chambertin",
            "----------",
            "----------",
            "Anejo Enchilado",
            "Anneau du Vic-Bilh",
            "Anthoriro",
            "----------",
            "----------"
    };

}