Android实现类似于PC中的右键弹出菜单效果

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package com.andyidea.menudemo; 
 
import java.util.ArrayList; 
import java.util.List; 
 
import android.app.Activity; 
import android.os.Bundle; 
import android.view.ContextMenu; 
import android.view.ContextMenu.ContextMenuInfo; 
import android.view.Menu; 
import android.view.MenuInflater; 
import android.view.MenuItem; 
import android.view.View; 
import android.widget.ArrayAdapter; 
import android.widget.ListView; 
import android.widget.Toast; 
 
public class MenuActivity extends Activity { 
  
 ListView lv; 
 private ArrayAdapter adapter; 
 private List alist = new ArrayList(); 
  
 /** Called when the activity is first created. */ 
 @Override 
 public void onCreate(Bundle savedInstanceState) { 
  super.onCreate(savedInstanceState); 
  setContentView(R.layout.main); 
   
  lv = (ListView)findViewById(R.id.lv); 
  alist.add("第一"); 
  alist.add("第二"); 
  alist.add("第三"); 
  adapter = new ArrayAdapter(this,android.R.layout.simple_expandable_list_item_1,alist); 
  lv.setAdapter(adapter); 
   
  //注册视图对象，即为ListView控件注册上下文菜单 
  registerForContextMenu(lv); 
 } 
 
 /** 
  * 创建上下文菜单选项 
  */ 
 @Override 
 public void onCreateContextMenu(ContextMenu menu, View v, 
   ContextMenuInfo menuInfo) { 
   
  //1.通过手动添加来配置上下文菜单选项 
  //menu.add(0, 1, 0, "修改"); 
  //menu.add(0, 2, 0, "删除"); 
   
  //2.通过xml文件来配置上下文菜单选项 
  MenuInflater mInflater = getMenuInflater(); 
  mInflater.inflate(R.menu.cmenu, menu); 
   
  super.onCreateContextMenu(menu, v, menuInfo); 
 } 
 
 /** 
  * 当菜单某个选项被点击时调用该方法 
  */ 
 @Override 
 public boolean onContextItemSelected(MenuItem item) { 
  switch(item.getItemId()){ 
  case 1: 
   Toast.makeText(this, "你选择了手动修改", Toast.LENGTH_SHORT).show(); 
   break; 
  case 2: 
   Toast.makeText(this, "你选择了手动删除", Toast.LENGTH_SHORT).show(); 
   break; 
  case R.id.add: 
   Toast.makeText(this, "你选择了XML增加", Toast.LENGTH_SHORT).show(); 
   break; 
  case R.id.update: 
   Toast.makeText(this, "你选择了XML更新", Toast.LENGTH_SHORT).show(); 
   break; 
  case R.id.delete: 
   Toast.makeText(this, "你选择了XML删除", Toast.LENGTH_SHORT).show(); 
   break; 
  } 
  return super.onContextItemSelected(item); 
 } 
 
 /** 
  * 当上下文菜单关闭时调用的方法 
  */ 
 @Override 
 public void onContextMenuClosed(Menu menu) { 
  // TODO Auto-generated method stub 
  super.onContextMenuClosed(menu); 
 } 
  
}