Android UI学习 - Menu
来源:互联网 发布:淘宝怎么设置id限购 编辑:程序博客网 时间:2024/05/14 03:29
Android 菜单(SubMenu)
SubMenu(子菜单),是在选项菜单的基础上增加子菜单。
一个Menu对象可以拥有0或多个SubMenu,通过调用Menu.addSubMenu方法将SubMenu添加到当前Menu中。在SubMenu 添加MenuItem的方式和在Menu中添加MenuItem方式一样,因为SubMenu是Menu的子类,但是SubMenu里不能再添加 SubMenu。
Android提供了基于Group id管理多个MenuItem的方法。
removeGroup(int group):移除所有属于group的MenuItem。
setGroupEnable( int group ,boolean enable):批量开启或关闭整个组的MenuItem。
setGroupVisible( int group ,visible):批量显示或隐藏整个组的MenuItem。
setGroupCheckable( int group ,boolean checkable,boolean exclusive):设置菜单是否可选中。最后一个exclusive是指是单选还是多选,当exclusive是true时,系统将菜单前面添加单选 框,是false时则变成是checkbox多选框。
示例:(在选项菜单[帮助]上配置了三个子菜单[LiveHelp,Email,Phone])
效果图
Activity代码
- //定义选项菜单
- final private static int OPTION_MENU_HELP = 3;//菜单[帮助]的编号
- final private static int OPTION_MENUS_GROUP0 = 0;//菜单组0#
- final private static int OPTION_MENUS_GROUP1 = 1;//菜单组1#
- final private static int OPTION_MENUS_GROUP2 = 2;//菜单组2#
- private MenuEntity[] optionMenus = {
- new MenuEntity(OPTION_MENUS_GROUP0, 1, 1, "删除",android.R.drawable.ic_menu_delete),
- new MenuEntity(OPTION_MENUS_GROUP0, 2, 2, "保存",android.R.drawable.ic_menu_edit),
- new MenuEntity(OPTION_MENUS_GROUP0, 3, 3, "帮助",android.R.drawable.ic_menu_help),
- new MenuEntity(OPTION_MENUS_GROUP0, 4, 4, "添加",android.R.drawable.ic_menu_add),
- new MenuEntity(OPTION_MENUS_GROUP1, 5, 5, "详细",android.R.drawable.ic_menu_info_details),
- new MenuEntity(OPTION_MENUS_GROUP1, 6, 6, "发送",android.R.drawable.ic_menu_send),
- new MenuEntity(OPTION_MENUS_GROUP1, 7, 7, "电话",android.R.drawable.ic_menu_call),
- new MenuEntity(OPTION_MENUS_GROUP1, 8, 8, "照相",android.R.drawable.ic_menu_camera),
- };
- //定义选项菜单[帮助]的子菜单
- private MenuEntity[] helpSubMenus = {
- new MenuEntity(OPTION_MENUS_GROUP2, 9, 1, "LiveHelp",android.R.drawable.ic_menu_delete),
- new MenuEntity(OPTION_MENUS_GROUP2, 10, 2, "Email",android.R.drawable.ic_menu_edit),
- new MenuEntity(OPTION_MENUS_GROUP2, 11, 2, "Phone",android.R.drawable.ic_menu_edit),
- };
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.main_list_view);
- }
- /**
- * 读取选中点击的菜单
- * @param index
- * @return
- */
- public String readOptionsMenu(int index){
- for(int i=0;i<optionMenus.length;i++){
- if(optionMenus[i].getItemId()==index) return optionMenus[i].getTitle().toString();
- }
- for(int i=0;i<helpSubMenus.length;i++){
- if(helpSubMenus[i].getItemId()==index) return helpSubMenus[i].getTitle().toString();
- }
- return "";
- }
- @Override
- public boolean onCreateOptionsMenu(Menu menu) {//创建选项菜单
- for(MenuEntity menuEntity:optionMenus){
- if(OPTION_MENU_HELP==menuEntity.getItemId()){
- //菜单[帮助]增加子菜单
- SubMenu subMenu = menu.addSubMenu(menuEntity.getGroupId(), menuEntity.getItemId(), menuEntity.getOrder(), menuEntity.getTitle()).setIcon(menuEntity.getIconRes());
- for(MenuEntity subMenuEntity:helpSubMenus){
- subMenu.add(subMenuEntity.getGroupId(), subMenuEntity.getItemId(), subMenuEntity.getOrder(), subMenuEntity.getTitle()).setIcon(subMenuEntity.getIconRes());
- }
- }else{
- menu.add(menuEntity.getGroupId(), menuEntity.getItemId(), menuEntity.getOrder(), menuEntity.getTitle()).setIcon(menuEntity.getIconRes());
- }
- }
- return super.onCreateOptionsMenu(menu);
- }
- @Override
- public boolean onOptionsItemSelected(MenuItem item) {
- int itemId = item.getItemId();
- Toast.makeText(context, "menu["+itemId+":"+item.getTitle()+"]被点击了", Toast.LENGTH_SHORT).show();
- return super.onOptionsItemSelected(item);
- }
- @Override
- public void onOptionsMenuClosed(Menu menu) {
- Toast.makeText(context, "OptionsMenu被关闭了", Toast.LENGTH_SHORT).show();
- super.onOptionsMenuClosed(menu);
- }
备注
- private MenuEntity[] optionMenus = {
- new MenuEntity(OPTION_MENUS_GROUP0, 1, 1, "删除",android.R.drawable.ic_menu_delete),
- new MenuEntity(OPTION_MENUS_GROUP0, 2, 2, "保存",android.R.drawable.ic_menu_edit),
- new MenuEntity(OPTION_MENUS_GROUP0, 3, 3, "帮助",android.R.drawable.ic_menu_help),
- new MenuEntity(OPTION_MENUS_GROUP0, 4, 4, "添加",android.R.drawable.ic_menu_add),
- new MenuEntity(OPTION_MENUS_GROUP1, 5, 5, "详细",android.R.drawable.ic_menu_info_details),
- new MenuEntity(OPTION_MENUS_GROUP1, 6, 6, "发送",android.R.drawable.ic_menu_send),
- new MenuEntity(OPTION_MENUS_GROUP1, 7, 7, "电话",android.R.drawable.ic_menu_call),
- new MenuEntity(OPTION_MENUS_GROUP1, 8, 8, "照相",android.R.drawable.ic_menu_camera),
- };
- //定义选项菜单[帮助]的子菜单
- private MenuEntity[] helpSubMenus = {
- new MenuEntity(OPTION_MENUS_GROUP2, 9, 1, "LiveHelp",android.R.drawable.ic_menu_delete),
- new MenuEntity(OPTION_MENUS_GROUP2, 10, 2, "Email",android.R.drawable.ic_menu_edit),
- new MenuEntity(OPTION_MENUS_GROUP2, 11, 2, "Phone",android.R.drawable.ic_menu_edit),
- };
其中的
- MenuEntity
参考 关于菜单基础属性的实体类
附录一 : 调用方法 removeGroup(int group)
- @Override
- public boolean onCreateOptionsMenu(Menu menu) {//创建选项菜单
- for(MenuEntity menuEntity:optionMenus){
- if(OPTION_MENU_HELP==menuEntity.getItemId()){
- //菜单[帮助]增加子菜单
- SubMenu subMenu = menu.addSubMenu(menuEntity.getGroupId(), menuEntity.getItemId(), menuEntity.getOrder(), menuEntity.getTitle()).setIcon(menuEntity.getIconRes());
- for(MenuEntity subMenuEntity:helpSubMenus){
- subMenu.add(subMenuEntity.getGroupId(), subMenuEntity.getItemId(), subMenuEntity.getOrder(), subMenuEntity.getTitle()).setIcon(subMenuEntity.getIconRes());
- }
- }else{
- menu.add(menuEntity.getGroupId(), menuEntity.getItemId(), menuEntity.getOrder(), menuEntity.getTitle()).setIcon(menuEntity.getIconRes());
- }
- }
- menu.removeGroup(OPTION_MENUS_GROUP1);//移除全部group为1的菜单
- return super.onCreateOptionsMenu(menu);
- }
如图所示:原group为1的菜单不显示了!
附录二 : 调用方法 setGroupEnabled( int group, boolean enabled )
关闭或者开启组为group的全部菜单。(关闭:enabled =false,菜单项变灰,不能点;开启:enabled =false,菜单项正常,可以点)
- @Override
- public boolean onCreateOptionsMenu(Menu menu) {//创建选项菜单
- for(MenuEntity menuEntity:optionMenus){
- if(OPTION_MENU_HELP==menuEntity.getItemId()){
- //菜单[帮助]增加子菜单
- SubMenu subMenu = menu.addSubMenu(menuEntity.getGroupId(), menuEntity.getItemId(), menuEntity.getOrder(), menuEntity.getTitle()).setIcon(menuEntity.getIconRes());
- for(MenuEntity subMenuEntity:helpSubMenus){
- subMenu.add(subMenuEntity.getGroupId(), subMenuEntity.getItemId(), subMenuEntity.getOrder(), subMenuEntity.getTitle()).setIcon(subMenuEntity.getIconRes());
- }
- }else{
- menu.add(menuEntity.getGroupId(), menuEntity.getItemId(), menuEntity.getOrder(), menuEntity.getTitle()).setIcon(menuEntity.getIconRes());
- }
- }
- menu.setGroupEnabled(OPTION_MENUS_GROUP1, false);//关闭group为1的菜单
- return super.onCreateOptionsMenu(menu);
- }
group为1的菜单项变灰了
package com.test.menu;import android.app.Activity;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.widget.*;public class testmenuActivity extends Activity { public static final int ITEM0 = Menu.FIRST; public static final int ITEM1 = Menu.FIRST+1; Button button1; Button button2; MenuItem item; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); button1 = (Button) findViewById(R.id.button1); button2 = (Button) findViewById(R.id.button2); button1.setVisibility(View.INVISIBLE); button2.setVisibility(View.INVISIBLE); } public boolean onCreateOptionsMenu(Menu menu){ super.onCreateOptionsMenu(menu); menu.add(0, ITEM0, 0, "显示button1"); menu.add(0, ITEM1, 1, "显示button2"); menu.findItem(ITEM1); item = (MenuItem) menu.findItem(ITEM0); return true; } public boolean onOptionsItemSelected(MenuItem item){ switch (item.getItemId()){ case ITEM0: actionClickMenuItem1(); bool = false; break; case ITEM1: actionClickMenuItem2(); bool = true; break; } return super.onOptionsItemSelected(item); } /* *点击第一个menu的第一个按钮执行的动作; */ private void actionClickMenuItem1(){ setTitle("button1 可见"); button1.setVisibility(View.INVISIBLE); button2.setVisibility(View.VISIBLE); item.setIcon(R.drawable.menu_start); } /* *点击第一个menu的第一个按钮执行的动作; */ private void actionClickMenuItem2(){ setTitle("button2 可见"); button2.setVisibility(View.INVISIBLE); button1.setVisibility(View.VISIBLE); item.setIcon(R.drawable.menu_end); }}
- Android UI学习 - Menu
- Android UI学习 - Menu
- Android UI学习 - Menu
- Android UI学习 - Menu
- Android UI学习 - Menu
- Android UI学习 - Menu
- Android UI学习 - Menu
- Android UI学习 - Menu
- Android UI学习 - Menu
- Android UI学习 - Menu
- Android UI学习 - Menu菜单
- android UI Menu
- Android学习:用户界面UI之菜单(Menu)
- Android笔记 - UI Menu (1)
- Android UI高级之Menu
- Android学习之menu
- Android学习之menu
- Android学习之menu
- 如何设计注册表单
- Qt移植(Qtopia4.2.2)
- 第八周作业 3.0
- 如何学些GLSL
- 关于版本系统的判断
- Android UI学习 - Menu
- USB概述
- 【GLSL教程】(一)图形流水线
- servlet程序开发===servlet生命周期
- 【GLSL教程】(二)在OpenGL中使用GLSL
- Instagram揭秘:牛逼的图片服务都在用哪些装备和技术
- 把c语言中的声明用程序翻译成通俗的语言
- 指针使用注意事项
- 第八周实验报告任务1