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
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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
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<?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
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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
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<?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> |
