XML构建Menu Android

/* (non-Javadoc)
* @see android.app.Activity#onCreateOptionsMenu(android.view.Menu)
*/
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// TODO Auto-generated method stub
MenuInflater menuInflater = getMenuInflater();
menuInflater.inflate(R.menu.options_menu, menu);
return super.onCreateOptionsMenu(menu);
}

<?xml version="1.0" encoding="utf-8"?>
<menu
xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="@+id/OPTMENU_PLAYSTYLE" android:title="Playstyle">
<menu>
<item android:id="@+id/OPTMENU_SINGLECYCLE" android:title="Singlecycle"></item>
<item android:id="@+id/OPTMENU_ALLCYCLE" android:title="Allcycle"></item>
<item android:id="@+id/OPTMENU_RANDOM" android:title="Random"></item>
<item android:id="@+id/OPTMENU_SINGLEPLAY" android:title="Singleplay"></item>
</menu>
</item>
<item android:id="@+id/OPTMENU_EXITPLAYER" android:title="ExitPlayer"></item>
</menu>