using Android.App;using Android.OS;using Android.Views;using Android.Widget;namespace MenuDemo{  [Activity(Label = "@string/ApplicationName", MainLauncher = true, Icon = "@drawable/Icon")]  public class MainActivity : Activity  {    protected override void OnCreate(Bundle bundle)    {      base.OnCreate(bundle);      SetContentView(Resource.Layout.Main);      var iv = FindViewById<ImageView>(Resource.Id.iv);      iv.SetImageResource(Resource.Drawable.test);      RegisterForContextMenu(iv);    }    //与一个活动关联    public override bool OnCreateOptionsMenu(IMenu menu)    {      base.OnCreateOptionsMenu(menu);      const int menuItemId = Menu.First;      const int menuItemOrder = Menu.None;      const int munuItemText = Resource.String.menuItem1;      /*       * 第一个参数：组值       * 第二个参数：菜单唯一标示       * 第三个参数：顺序参数       * 第四个参数：文本       */      menu.Add(1, menuItemId, menuItemOrder, munuItemText);      menu.Add(2, menuItemId + 10, menuItemOrder + 1, "菜单2");      menu.Add(2, menuItemId + 20, menuItemOrder + 2, "菜单3" );      var subMenu = menu.AddSubMenu(0, menuItemId + 30, menuItemOrder + 3, "子菜单" );      subMenu.SetHeaderIcon(Resource.Drawable.more);      var subMenuItem1 = subMenu.Add(0, menuItemId + 40, menuItemOrder + 4,"子菜单-1" );      subMenuItem1.SetIcon(Resource.Drawable.more);      var subMenuItem2 = subMenu.Add(0, menuItemId + 50, menuItemOrder + 5,"子菜单-2" ).SetCheckable(true);      subMenuItem2.SetIcon(Resource.Drawable.blue);      subMenu.Add(0, menuItemId + 60, menuItemOrder + 6, "子菜单-3" ).SetCheckable(true);      return true;    }    public override bool OnOptionsItemSelected(IMenuItem item)    {      Toast.MakeText(this, "当前菜单编号" + item.ItemId, ToastLength.Long).Show();      return base.OnOptionsItemSelected(item);    }    public override void OnCreateContextMenu(IContextMenu menu, View v, IContextMenuContextMenuInfo menuInfo)    {      base.OnCreateContextMenu(menu, v, menuInfo);      menu.SetHeaderTitle("上下文菜单");      menu.SetHeaderIcon(Resource.Drawable.blue);      menu.Add(0, Menu.First, Menu.None, "菜单1");      menu.Add(0, Menu.First+1,Menu.None, "菜单2").SetShortcut('2','B');      menu.Add(0, Menu.First + 2, Menu.None, "菜单3");      var subMenu = menu.AddSubMenu("子菜单");      subMenu.Add("子菜单选项");    }  }}

<?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"  android:minWidth="25px"  android:minHeight="25px">  <ImageView    android:layout_width="fill_parent"    android:layout_height="wrap_content"    android:id="@+id/iv" /></LinearLayout>

package com.example.halower.menudemo;import android.app.Activity;import android.os.Bundle;import android.view.ContextMenu;import android.view.MenuInflater;import android.view.View;import android.widget.ImageView;public class MainActivity extends Activity {  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    ImageView iv=(ImageView)findViewById(R.id.iamgeView);    iv.setImageResource(R.drawable.test);    registerForContextMenu(iv);  }  @Override  public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {    super.onCreateContextMenu(menu, v, menuInfo);    MenuInflater inflater=new MenuInflater(this);    inflater.inflate(R.menu.menu_main,menu);    menu.setHeaderIcon(R.drawable.blue);    menu.setHeaderTitle(R.string.menuTitle);  }}

<?xml version="1.0" encoding="utf-8"?><resources>  <string name="app_name">MenuDemo</string>  <string name="action_settings">Settings</string>  <string name="item1Name" >菜单1</string>  <string name="item2Name" >菜单2</string>  <string name="item3Name" >菜单3--More</string>  <string name="item4Name" >菜单4</string>  <string name="menuTitle">XML中解析菜单</string>  <string name="subitem1Name">子菜单1</string>  <string name="subitem2Name">子菜单2</string></resources>