/* * Copyright ?2008 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. * */package com.sun.lwuit.uidemo;import com.sun.lwuit.Button;import com.sun.lwuit.Command;import com.sun.lwuit.Dialog;import com.sun.lwuit.Form;import com.sun.lwuit.List;import com.sun.lwuit.events.ActionEvent;import com.sun.lwuit.events.ActionListener;import com.sun.lwuit.layouts.BorderLayout;import com.sun.lwuit.list.DefaultListModel;/** *本例演示如何使用List控件 */public class ListDemo implements ActionListener  {    public Form form = new Form("ListDemo");    private  Command backCommand = new Command("Back", 1);    private String[] str_list = {    "aaaaaaaaaaaa",    "bbbbbbbbbbbb",    "ccccccccccccc",    "ddddddddddddd"    };    ListDemo(){        form.setLayout(new BorderLayout());        form.addCommand(backCommand);        form.setScrollable(true);        //列表控件，盡管列表控件占用不少面積，但實際上跟普通的Componet一樣        DefaultListModel myListModel = new DefaultListModel(str_list);        List list = new List(myListModel);        list.getStyle().setBgTransparency(100);        //按鈕控件        Button button = new Button("test");        form.addComponent(BorderLayout.CENTER,list);        form.addComponent(BorderLayout.NORTH,button);        list.addActionListener(this);        form.setCommandListener(this);    }    public void actionPerformed(ActionEvent arg0) {                   try{//處理列表事件            String str=((List)(arg0.getSource())).getSelectedItem().toString();            Dialog.show("ListDemo", str, "OK", null);        }catch(Exception e)//處理COMMAND事件        {            Command command=arg0.getCommand();            if(command==backCommand)                UIDemoMIDlet.backToMainMenu();        }    }}