Android 选项菜单和子菜单的使用

add(int,
int, int, CharSequence)

addSubMenu(int,
int, int, CharSequence)

Drawable

View

<resources>
<string name="app_name">TestActivity</string>
<string name="menu_settings">Settings</string>
<string name="title_activity_main">MainActivity</string>
<string name="lable">您的选择为\n</string>
<string name="gender">性别</string>
<string name="male">男</string>
<string name="female">女</string>
<string name="hooby">爱好</string>
<string name="hooby1">游泳</string>
<string name="hooby2">唱歌</string>
<string name="hooby3">写java程序</string>
<string name="ok">确定</string>

</resources>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/LinearLayout01"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@color/black"
>
<ScrollView
android:id="@+id/ScrollView01"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<EditText
android:id="@+id/EditText01"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:editable="false"
android:cursorVisible="false"
android:text="@string/lable"/>
</ScrollView>
</LinearLayout>

package wyf.jc;			//声明包语句
import android.app.Activity;		//引入相关类
import android.os.Bundle;		//引入相关类
import android.view.Menu;		//引入相关类
import android.view.MenuItem;		//引入相关类
import android.view.SubMenu;		//引入相关类
import android.view.MenuItem.OnMenuItemClickListener;	//引入相关类
import android.widget.EditText;	//引入相关类
public class Sample_6_1 extends Activity {
final int MENU_GENDER_MALE=0;    //性别为男选项编号
final int MENU_GENDER_FEMALE=1;	//性别为女选项编号
final int MENU_HOBBY1=2;		//爱好1选项编号
final int MENU_HOBBY2=3;		//爱好2选项编号
final int MENU_HOBBY3=4;		//爱好3选项编号
final int MENU_OK=5;    		//确定菜单选项编号
final int MENU_GENDER=6;  		//性别子菜单编号
final int MENU_HOBBY=7;         //爱好子菜单编号每个菜单项目的编号=======end============
final int GENDER_GROUP=0;      //性别子菜单项组的编号
final int HOBBY_GROUP=1;  	   //爱好子菜单项组的编号
final int MAIN_GROUP=2;        //外层总菜单项组的编号

MenuItem[] miaHobby=new MenuItem[3];//爱好菜单项组
MenuItem male=null;//男性性别菜单项
@Override
public void onCreate(Bundle savedInstanceState) {	//重写onCreate方法
super.onCreate(savedInstanceState);
setContentView(R.layout.main);        		//设置当前屏幕
}
@Override
public boolean onCreateOptionsMenu(Menu menu){
//性别单选菜单项组   菜单若编组就是单选菜单项组
SubMenu subMenuGender = menu.addSubMenu(MAIN_GROUP,MENU_GENDER,0,R.string.gender);
subMenuGender.setIcon(R.drawable.gender);
subMenuGender.setHeaderIcon(R.drawable.gender);
male=subMenuGender.add(GENDER_GROUP, MENU_GENDER_MALE, 0, R.string.male);
male.setChecked(true);
subMenuGender.add(GENDER_GROUP, MENU_GENDER_FEMALE, 0, R.string.female);
//设置GENDER_GROUP组是可选择的，互斥的
subMenuGender.setGroupCheckable(GENDER_GROUP, true,true);

//爱好复选菜单项组
SubMenu subMenuHobby = menu.addSubMenu(MAIN_GROUP,MENU_HOBBY,0,R.string.hobby);
subMenuHobby.setIcon(R.drawable.hobby);
miaHobby[0]=subMenuHobby.add(HOBBY_GROUP, MENU_HOBBY1, 0, R.string.hobby1);
miaHobby[1]=subMenuHobby.add(HOBBY_GROUP, MENU_HOBBY2, 0, R.string.hobby2);
miaHobby[2]=subMenuHobby.add(HOBBY_GROUP, MENU_HOBBY3, 0, R.string.hobby3);
miaHobby[0].setCheckable(true);//设置菜单项为复选菜单项
miaHobby[1].setCheckable(true);
miaHobby[2].setCheckable(true);
//确定菜单项
MenuItem ok=menu.add(GENDER_GROUP+2,MENU_OK,0,R.string.ok);
OnMenuItemClickListener lsn=new OnMenuItemClickListener(){//实现菜单项点击事件监听接口
@Override
public boolean onMenuItemClick(MenuItem item) {
appendStateStr();
return true;
}
};
ok.setOnMenuItemClickListener(lsn);//给确定菜单项添加监听器
//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
//要注意，同时设置多次时只有最后一个设置起作用

return true;
}
@Override  //单选或复选菜单项选中状态变化后的回调方法
public boolean onOptionsItemSelected(MenuItem mi){
switch(mi.getItemId()){
case MENU_GENDER_MALE://单选菜单项状态的切换要自行写代码完成
case MENU_GENDER_FEMALE:
mi.setChecked(true);
appendStateStr();//当有效项目变化时记录在文本区中
break;
case MENU_HOBBY1://复选菜单项状态的切换要自行写代码完成
case MENU_HOBBY2:
case MENU_HOBBY3:
mi.setChecked(!mi.isChecked());
appendStateStr();//当有效项目变化时记录在文本区中
break;
}
return true;
}
//获取当前选择状态的方法
public void appendStateStr(){
String result="您选择的性别为：";
if(male.isChecked()){
result=result+"男";
}
else{
result=result+"女";
}
String hobbyStr="";
for(MenuItem mi:miaHobby){
if(mi.isChecked()){
hobbyStr=hobbyStr+mi.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)Sample_6_1.this.findViewById(R.id.EditText01);
et.append(result);
}
}