长按出菜单！！！！！！！！ContextMenu

------------------------------miain.java-------------------------

package org.crazyit.contextmenu;


import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.MenuItem;
import android.view.View;
import android.widget.TextView;


/**
 * Description:
 * <br/>site: <a href="http://www.crazyit.org">crazyit.org</a> 
 * <br/>Copyright (C), 2001-2012, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee [e-mail]
 * @version  1.0
 */
public class ContextMenuTest extends Activity
{
// 为每个菜单定义一个标识
final int MENU1 = 0x111;
final int MENU2 = 0x112;
final int MENU3 = 0x113;
private TextView txt;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
txt = (TextView) findViewById(R.id.txt);
// 为文本框注册上下文菜单
registerForContextMenu(txt);
}


// 每次创建上下文菜单时都会触发该方法
@Override
public void onCreateContextMenu(ContextMenu menu, View source,
ContextMenu.ContextMenuInfo menuInfo)
{
menu.add(0, MENU1, 0, "红色");
menu.add(0, MENU2, 0, "绿色");
menu.add(0, MENU3, 0, "蓝色");
// 将三个菜单项设为单选菜单项
menu.setGroupCheckable(0, true, true);
//设置上下文菜单的标题、图标
menu.setHeaderIcon(R.drawable.tools);
menu.setHeaderTitle("选择背景色");
}


// 菜单项被单击时触发该方法。
@Override
public boolean onContextItemSelected(MenuItem mi)
{
switch (mi.getItemId())
{
case MENU1:
mi.setChecked(true);
txt.setBackgroundColor(Color.RED);
break;
case MENU2:
mi.setChecked(true);
txt.setBackgroundColor(Color.GREEN);
break;
case MENU3:
mi.setChecked(true);
txt.setBackgroundColor(Color.BLUE);
break;
}
return true;
}
}

。。。。。。。。。。。。。。main.xml。。。。。。。。。。。。。。

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView  
android:id="@+id/txt"
android:layout_width="fill_parent" 
android:layout_height="wrap_content" 
android:textSize="15pt"
android:text="可通过上下文菜单修改背景色"
/>
</LinearLayout>