菜单（四）给ListView的item添加上下文菜单

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.contextmenu.MainActivity" >

    <ListView
        android:id="@+id/listView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true" >
    </ListView>

</RelativeLayout>

package com.example.contextmenu;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ContextMenu.ContextMenuInfo;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

public class MainActivity extends Activity {

	private ListView listView;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		listView = (ListView) findViewById(R.id.listView1);
		ArrayAdapter<String> arrayAdapter =
				new ArrayAdapter<String>(MainActivity.this,
						android.R.layout.simple_list_item_1,getData());
		listView.setAdapter(arrayAdapter);
		registerForContextMenu(listView);//给listview注册上下文菜单
	}

	public List<String> getData(){
		List<String> list = new ArrayList<String>();
		for(int i = 1; i < 10; i++){
			list.add("list " + i);
		}
		return list;
 	}
	@Override
	public void onCreateContextMenu(ContextMenu menu, View v,
			ContextMenuInfo menuInfo) {
		// 加载xml中的上下文菜单
		super.onCreateContextMenu(menu, v, menuInfo);
		MenuInflater menuInflater = getMenuInflater();
		menuInflater.inflate(R.menu.main, menu);
	}
	@Override
	public boolean onContextItemSelected(MenuItem item) {
		switch (item.getItemId()) {
		case R.id.edit:
			Toast.makeText(MainActivity.this, "编辑操作", Toast.LENGTH_SHORT).show();
			break;
		case R.id.share:
			Toast.makeText(MainActivity.this, "分享操作", Toast.LENGTH_SHORT).show();
			break;
		case R.id.delete:
			Toast.makeText(MainActivity.this, "删除操作", Toast.LENGTH_SHORT).show();
			break;
		default:
			break;
		}
		return super.onContextItemSelected(item);
	}
}

res/menu/main.xml

<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    tools:context="com.example.contextmenu.MainActivity" >

    <item
        android:id="@+id/edit"
        android:orderInCategory="100"
        android:showAsAction="never"
        android:title="编辑"/>
    <item
        android:id="@+id/share"
        android:orderInCategory="100"
        android:showAsAction="never"
        android:title="分享"/>
    <item
        android:id="@+id/delete"
        android:orderInCategory="100"
        android:showAsAction="never"
        android:title="删除"/>

</menu>