本文实例讲述了android选项菜单用法。分享给大家供大家参考。具体如下：
android平台下所提供的菜单大体上可分为三类：选项菜单、上下文菜单和子菜单。
当activity在前台运行时，如果用户按下手机上的menu键，此时就会在屏幕低端弹出相应的选项菜单。但这个功能需要开发人员编程来实现的，如果在开发应用程序时没有实现该功能，那么程序运行时按下手机的meun键是不会起作用的。
对于携带图标的选项菜单，每次最多只能显示6个，当菜单选项多于6个时，将只显示前5个和一个扩展菜单选项，点击扩展菜单选项将会弹出其余的菜单项。扩展菜单项中将不会显示图标，但是可以显示单选按钮和复选框。
以下模拟选项菜单
main.xml布局文件：
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<?xml version="1.0" encoding="utf-8"?>
<linearlayout android:id="@+id/linearlayout01"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
xmlns:android="http://schemas.android.com/apk/res/android">
<scrollview android:id="@+id/scrollview"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<edittext android:id="@+id/edittext"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:editable="false"
android:cursorvisible="false"
android:text="您的选择为\n">
</edittext>
</scrollview>
</linearlayout>
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meunactivity类：
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package com.ljq.activity;
import android.app.activity;
import android.os.bundle;
import android.view.menu;
import android.view.menuitem;
import android.view.submenu;
import android.view.menuitem.onmenuitemclicklistener;
import android.widget.edittext;
public class meunactivity extends activity {
private final int menu_gender_male = 0;
private final int menu_gender_female = 1;
private final int menu_hobby1 = 2;
private final int menu_hobby2 = 3;
private final int menu_hobby3 = 4;
private final int menu_ok = 5;
private final int menu_gender = 6;
private final int menu_hobby = 7;
private final int gender_group = 0;
private final int hobby_group = 1;
private final int main_group = 2;
menuitem[] hoddymenuitems = new menuitem[3];// 爱好菜单项组
menuitem malemenuitem = null;// 男性菜单项
@override
public void oncreate(bundle savedinstancestate) {
super.oncreate(savedinstancestate);
setcontentview(r.layout.main);
}
/**j
* 初始化选项菜单
*/
@override
public boolean oncreateoptionsmenu(menu menu) {
//单选菜单选项
submenu gendermenu = menu.addsubmenu(main_group, menu_gender, 0, "性别");
gendermenu.seticon(r.drawable.gender);
gendermenu.setheadericon(r.drawable.gender);
malemenuitem = gendermenu.add(gender_group, menu_gender_male, 0, "男");
malemenuitem.setchecked(true);
gendermenu.add(gender_group, menu_gender_female, 0, "女");
//设置菜单项为单选菜单项，互斥的
gendermenu.setgroupcheckable(gender_group, true, true);
//复选菜单选项
submenu hobbymenu = menu.addsubmenu(main_group,menu_hobby,0,"爱好");
hobbymenu.seticon(r.drawable.hobby);
hobbymenu.setheadericon(r.drawable.hobby);
hoddymenuitems[0]=hobbymenu.add(hobby_group, menu_hobby1, 0, "游泳");
hoddymenuitems[1]=hobbymenu.add(hobby_group, menu_hobby2, 0, "唱歌");
hoddymenuitems[2]=hobbymenu.add(hobby_group, menu_hobby3, 0, "编程");
//设置菜单项为复选菜单项
hoddymenuitems[0].setcheckable(true);
hoddymenuitems[1].setcheckable(true);
hoddymenuitems[2].setcheckable(true);
//确定菜单项
menuitem ok=menu.add(main_group,menu_ok,0,"确定");
ok.setonmenuitemclicklistener(new onmenuitemclicklistener(){
public boolean onmenuitemclick(menuitem item) {
appendstatestr();
return true;
}
});
//给确定菜单项添加快捷键
ok.setalphabeticshortcut('o');//设置字符快捷键
//ok.setnumericshortcut('1');//设置数字快捷键
//ok.setshortcut('a', '2');//同时设置两种快捷键。注意：同时设置多次时只有最后一个设置起作用
return true; // 记得返回true，否则无效
}
/**
* 在菜单选项中某个选项被选中时调用该事件
*/
@override
public boolean onoptionsitemselected(menuitem item) {
switch (item.getitemid()) {
case menu_gender_male:
case menu_gender_female:
item.setchecked(true);
appendstatestr();
break;
case menu_hobby1:
case menu_hobby2:
case menu_hobby3:
item.setchecked(!item.ischecked());
appendstatestr();
break;
}
return true;
}
public void appendstatestr() {
string result = "您选择的性别为：";
if (malemenuitem.ischecked()) {
result = result + "男";
} else {
result = result + "女";
}
string hobbystr = "";
for (menuitem hoddy : hoddymenuitems) {
if (hoddy.ischecked()) {
hobbystr = hobbystr + hoddy.gettitle() + "、";
}
}
if (hobbystr.length() > 0) {
result = result + ",您的爱好为："
+ hobbystr.substring(0, hobbystr.length() - 1) + "。\n";
} else {
result = result + "。\n";
}
edittext et = (edittext) meunactivity.this.findviewbyid(r.id.edittext);
et.append(result);
}
}
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运行结果：
希望本文所述对大家的android程序设计有所帮助。