Android仿微信菜单(Menu)（使用C#和Java分别实现）

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;
      
      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);
  }
}

Layout

<?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>

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