Android，如何创建选项菜单

Question

在这里我尝试制​​作选项菜单，但屏幕上没有显示菜单，所以请指导我我在哪里做错了......

MenuTest.java

public class MenuTest extends Activity {
   @Override
public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater=getMenuInflater();
    inflater.inflate(R.menu.more_tab_menu, menu);
    return super.onCreateOptionsMenu(menu);

}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch(item.getItemId())
    {
    case R.id.feeds:
        break;
    case R.id.friends:
        break;
    case R.id.about:
        break;
    }
    return true;
}
}

而我的 XML 文件是 more_tab_menu.xml

<?xml version="1.0" encoding="utf-8"?>
<menu
xmlns:android="http://schemas.android.com/apk/res/android">
<item
    android:id="@+id/feeds"
    android:title="Feeds"/>
<item
    android:id="@+id/friends"
    android:title="Friends"/>
<item
    android:id="@+id/about"
    android:title="About"/>
</menu>

请指导我，

Answer 1

public class MenuTest extends Activity {

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.more_tab_menu, menu);

        // return true so that the menu pop up is opened
        return true; 
    }
}

别忘了按下模拟器或设备上的菜单按钮或图标