我们如何动态添加菜单项 [英] how we can add menu item dynamically

问题描述

您好，我正在创建一个应用程序，它是一个标签应用程序.

hi frnds am creating an application which is a tab application.

在我的扩展sherlockFragmentActivity的主页中，我正在膨胀menu.xml并包括optionMenuitem单击侦听器上的代码. Fragmentactivity包含tabhost，并在每个选项卡上加载片段. 这是我的menu.xml

in my Home which extends sherlockFragmentActivity, i am inflating menu.xml and includes code for on optionMenuitem click listener. The Fragmentactivity contains tabhost and on each tab it load fragments. this is my menu.xml

<item
        android:id="@+id/action_settings"
        android:orderInCategory="100"
        android:showAsAction="always"
       android:icon="@drawable/setting_selector"
        android:title=""
        >
        <menu >
            <item
                android:id="@+id/Profile"
                android:showAsAction="ifRoom"
                android:title="Profile"/>
            <item
                android:id="@+id/chngDoctor"
                android:showAsAction="ifRoom"
                android:title="Change doctor"
                android:visible="false"/>
            <item
                android:id="@+id/changePword"
                android:showAsAction="ifRoom"
                android:title="Change password"/>
            <item
                android:id="@+id/logout"
                android:showAsAction="ifRoom"
                android:title="Logout"/>
        </menu>
    </item>

这是类Home中的onCreateOptionMenu和onOptionItemSelected方法

and this is my onCreateOptionMenu and onOptionItemSelected methods in class Home

    @Override
public boolean onCreateOptionsMenu(Menu menu) {
    // TODO Auto-generated method stub
    getSupportMenuInflater().inflate(R.menu.main, menu);
    SubMenu subMenu = (SubMenu) menu.getItem(0).getSubMenu();
    if(userType.equals("admin"))
        subMenu.getItem(1).setVisible(true);
    else
        subMenu.getItem(1).setVisible(false);
    return true;
}

这是我的onOptionItemSelected方法

and this is my onOptionItemSelected method

  @Override
    public boolean onOptionsItemSelected(MenuItem item) 
    {
        switch (item.getItemId()) {
        case R.id.Profile:
              break;
        case R.id.changePword :
            break;
        case R.id.chngDoctor :
                 break;
        case R.id.logout:
            Home.this.finish();
            break;
        }
        return true;
    }

我需要根据选项卡的更改添加一些菜单.在选项卡更改上，我加载了不同的片段，当片段更改时，我需要向菜单中添加新项目.我的ListFrag扩展了SherlockFragment，当我单击第3个选项卡时它将加载.当此片段加载时，我需要在菜单中添加1个菜单项

i need to add some menus depending on tab change. that is on tab change i load different fragments and when fragment changes i need to add new items to the menu. my ListFrag which extends SherlockFragment and it will load when i click on the 3 rd tab. when this fragment load i need to add 1 menu item to the menu

推荐答案

尝试以下方法.

@Override
    public boolean onCreateOptionsMenu(Menu menu) {
        super.onCreateOptionsMenu(menu);

        menu.add(0, 0, 0, "Option1").setShortcut('3', 'c');
        menu.add(0, 1, 0, "Option2").setShortcut('3', 'c');
        menu.add(0, 2, 0, "Option3").setShortcut('4', 's');

        SubMenu sMenu = menu.addSubMenu(0, 3, 0, "SubMenu"); //If you want to add submenu               
        sMenu.add(0, 4, 0, "SubOption1").setShortcut('5', 'z');
        sMenu.add(0, 5, 0, "SubOption2").setShortcut('5', 'z');             

        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {           

        switch (item.getItemId()) {
        case 0:
            // code for option1
            return true;
        case 1:
            // code for option2
            return true;
        case 2:
            // code for option3
            return true;            
        case 4:
            // code for subOption1
            return true;
        case 5:
            // code for subOption2
            return true;            
        }
        return super.onOptionsItemSelected(item);
    }

这可能会对您有所帮助.

This may help you.

这篇关于我们如何动态添加菜单项的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！