Android ListView两种长按弹出菜单方式

转自：http://www.cnblogs.com/yejiurui/p/3247527.html

package com.wyl.download_demo;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.graphics.Color;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnCreateContextMenuListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;

/**

* 知识点1：ListView item:两种长按弹出菜单方式
* 知识点2：ListView SimpleAdapter的使用
*  知识点 3：在java代码中创建一个ListView
*/ 

-----------------------------------------------------
Activity

代码： 

public class ListOnLongClickActivity extends Activity {
        private LinearLayout myListViewlayout;
        private ListView mListView;
        SimpleAdapter adapter;
        public int MID; 

        // 创建一个List对象，用来存放列表项的每一行map信息
        List<Map<String, Object>> list = new ArrayList<Map<String, Object>>(); 

        @Override
        public void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.main); 

                myListViewlayout = (LinearLayout) findViewById(R.id.myListViewlayout);
                mListView = new ListView(this);
                // 创建布局参数
                LinearLayout.LayoutParams listviewParams = new LinearLayout.LayoutParams(
                                LinearLayout.LayoutParams.FILL_PARENT,
                                LinearLayout.LayoutParams.FILL_PARENT);
                // 当滑动列表上，默认显示的黑色
                mListView.setCacheColorHint(Color.WHITE);
                // 将列表添加到流式布局myListViewlayout中
                myListViewlayout.addView(mListView, listviewParams); 

                FillListData(); 

                // 列表现的单机事件
                mListView.setOnItemClickListener(new OnItemClickListener() { 

                        @Override
                        public void onItemClick(AdapterView<?> arg0, View arg1,
                                        int position, long id) {
                                /*
                                 * 点击列表项时触发onItemClick方法，四个参数含义分别为
                                 * arg0：发生单击事件的AdapterView
                                 * arg1：AdapterView中被点击的View
                                 * position：当前点击的行在adapter的下标
                                 * id：当前点击的行的id
                                 */
                                Toast.makeText(ListOnLongClickActivity.this,
                                                "您选择的是" + list.get(position).get("name").toString(),
                                                Toast.LENGTH_SHORT).show();
                        }
                }); 

                /**
                 * Item 长按方式弹出菜单多选方式1
                 * Item 长按方式弹出菜单多选方式2
                 * ItemOnLongClick1()与ItemOnLongClick2()不共存，按实际需要选择
                 */
        //        ItemOnLongClick1();
                ItemOnLongClick2();
        } 

        // 填充ListView资源
        private void FillListData() { 

                adapter = new SimpleAdapter(ListOnLongClickActivity.this,
                                getListData(), R.layout.listviewrow, new String[] { "name",
                                                "price" }, new int[] { R.id.tv_name, R.id.tv_price });
                mListView.setAdapter(adapter);
        } 

        private List<Map<String, Object>> getListData() { 

                Map<String, Object> _map = new HashMap<String, Object>();
                _map.put("name", "小米");
                _map.put("price", "2350元");
                list.add(_map); 

                _map = new HashMap<String, Object>();
                _map.put("name", "HTC G18");
                _map.put("price", "3340元");
                list.add(_map); 

                _map = new HashMap<String, Object>();
                _map.put("name", "iphone 5");
                _map.put("price", "5450元");
                list.add(_map); 

                _map = new HashMap<String, Object>();
                _map.put("name", "iPhone 4S");
                _map.put("price", "4650元");
                list.add(_map); 

                _map = new HashMap<String, Object>();
                _map.put("name", "MOTO ME525");
                _map.put("price", "1345元");
                list.add(_map);
                return list; 

        } 

        private void ItemOnLongClick1() {
//注：setOnCreateContextMenuListener是与下面onContextItemSelected配套使用的
                mListView
                                .setOnCreateContextMenuListener(new OnCreateContextMenuListener() { 

                                        public void onCreateContextMenu(ContextMenu menu, View v,
                                                        ContextMenuInfo menuInfo) {
                                                menu.add(0, 0, 0, "购买");
                                                menu.add(0, 1, 0, "收藏");
                                                menu.add(0, 2, 0, "对比"); 

                                        }
                                });
        } 

        // 长按菜单响应函数
        public boolean onContextItemSelected(MenuItem item) { 

                AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item
                                .getMenuInfo();
                MID = (int) info.id;// 这里的info.id对应的就是数据库中_id的值 

                switch (item.getItemId()) {
                case 0:
                        // 添加操作
                        Toast.makeText(ListOnLongClickActivity.this,
                                        "添加",
                                        Toast.LENGTH_SHORT).show();
                        break; 

                case 1:
                        // 删除操作
                        break; 

                case 2:
                        // 删除ALL操作
                        break; 

                default:
                        break;
                } 

                return super.onContextItemSelected(item); 

        } 

        private void ItemOnLongClick2() {
                mListView.setOnItemLongClickListener(new OnItemLongClickListener() { 

                        @Override
                        public boolean onItemLongClick(AdapterView<?> arg0, View arg1,
                                        final int arg2, long arg3) {
                                list.remove(arg2);
                                new AlertDialog.Builder(ListOnLongClickActivity.this)
                                                .setTitle("对Item进行操作")
                                                .setItems(R.array.arrcontent,
                                                                new DialogInterface.OnClickListener() {
                                                                        public void onClick(DialogInterface dialog,
                                                                                        int which) {
                                                                                String[] PK = getResources()
                                                                                                .getStringArray(
                                                                                                                R.array.arrcontent);
                                                                                Toast.makeText(
                                                                                                ListOnLongClickActivity.this,
                                                                                                PK[which], Toast.LENGTH_LONG)
                                                                                                .show();
                                                                                if (PK[which].equals("删除")) {
                                                                                        // 按照这种方式做删除操作，这个if内的代码有bug，实际代码中按需操作
                                                                                        list.remove(arg2);
                                                                                        adapter = (SimpleAdapter) mListView
                                                                                                        .getAdapter();
                                                                                        if (!adapter.isEmpty()) {
                                                                                                adapter.notifyDataSetChanged(); // 实现数据的实时刷新
                                                                                        }
                                                                                }
                                                                        }
                                                                })
                                                .setNegativeButton("取消",
                                                                new DialogInterface.OnClickListener() {
                                                                        public void onClick(DialogInterface dialog,
                                                                                        int which) {
                                                                                // TODO Auto-generated method stub 

                                                                        }
                                                                }).show();
                                return true;
                        }
                }); 

        }
}

listviewrow.xml:

 代码片段， <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:background="@drawable/listviewbg"
     android:orientation="vertical" > 

     <TextView
         android:id="@+id/tv_name"
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:textColor="@android:color/black" /> 

     <TextView
         android:id="@+id/tv_price"
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:textColor="@android:color/black" /> 

 </LinearLayout>