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(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");

        }

    }

}

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>