Android-Menu [使用C# And Java实现]

本篇是对安卓菜单使用编程方式实现，当然可以使用XML的方式完成同样的功能，基本Java和C#写法都是一致的，所以使用XML的方式在本篇中使用Java演示，需要注意的是，对于如果不是VS开发的话，那么资源文件名称必须以小写开头，否则会报错。

运行效果

C#实现

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(, menuItemId, menuItemOrder, munuItemText);
            menu.Add(, menuItemId + , menuItemOrder + , "菜单2");
            menu.Add(, menuItemId + , menuItemOrder + , "菜单3" );
            var subMenu = menu.AddSubMenu(, menuItemId + , menuItemOrder + , "子菜单" );
            subMenu.SetHeaderIcon(Resource.Drawable.more);
            var subMenuItem1 = subMenu.Add(, menuItemId + , menuItemOrder + ,"子菜单-1" );
            subMenuItem1.SetIcon(Resource.Drawable.more);
            var subMenuItem2 = subMenu.Add(, menuItemId + , menuItemOrder + ,"子菜单-2" ).SetCheckable(true);
            subMenuItem2.SetIcon(Resource.Drawable.blue);
            subMenu.Add(, menuItemId + , menuItemOrder + , "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(, Menu.First, Menu.None, "菜单1");
            menu.Add(, Menu.First+,Menu.None, "菜单2").SetShortcut('','B');
            menu.Add(, Menu.First + , Menu.None, "菜单3");
            var subMenu = menu.AddSubMenu("子菜单");
            subMenu.Add("子菜单选项");
        }
    }
}

Layout

<?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>

运行效果

Java实现

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>