ch2_contextmenu.xml:

<?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:orientation="vertical" >
    
    <TextView android:id="@+id/tv"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="这是一个上下文菜单ContextMenu的示例"/>
    
    <EditText android:id="@+id/myEd"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"/>

</LinearLayout>

ContextMenuActivity.java :

package com.example.ch7;



import com.example.baseexample.R;

import android.app.Activity;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.MenuItem;
import android.view.View;
import android.view.ContextMenu.ContextMenuInfo;
import android.widget.EditText;
import android.widget.TextView;

public class ContextMenuActivity extends Activity {

    private String tempStr;
    private TextView tv;
    private EditText myEd;
    
    public void onCreate(Bundle savedInstanceState){
        super.onCreate(savedInstanceState);
        setContentView(R.layout.ch7_contextmenu);
        this.registerForContextMenu(findViewById(R.id.tv));
        this.registerForContextMenu(findViewById(R.id.myEd));
    }
    
    public void onCreateContextMenu(ContextMenu menu,View v,ContextMenuInfo menuInfo){
        menu.setHeaderIcon(R.drawable.ic_launcher);
        if(v==findViewById(R.id.tv)){
            menu.add(0,1,0,"复制");
            menu.add(0,2,0,"剪切");
            menu.add(0,3,0,"删除");
        }
        if(v==findViewById(R.id.myEd)){
            menu.add(0,4,0,"粘贴");
            menu.add(0,5,0,"删除");
        }
    }
    
    public boolean onContextItemSelected(MenuItem item){
        tv = (TextView)findViewById(R.id.tv);
        myEd = (EditText)findViewById(R.id.myEd);
        switch(item.getItemId()){
        case 1:
            tempStr = tv.getText().toString();
            break;
        case 2:
            tempStr = tv.getText().toString();
            tv.setText("");
            break;
        case 3:
            tv.setText("");
            break;
        case 4:
            myEd.setText(tempStr);
            break;
        case 5:
            myEd.setText("");
            break;
        }
        return true;
    }
    
    
}