/* * %W% %E% * * Copyright (c) 2000-2003 Sun Microsystems, Inc. All rights reserved. * PROPRIETARY/CONFIDENTIAL * Use is subject to license terms */package stringitem;import javax.microedition.lcdui.*;import javax.microedition.midlet.MIDlet;/** * This is the main class for the UI MIDP demo. This demo of the components * available in the UI is designed for simplicity. Each UI element is * demonstrated within a class of its own derived from either BaseDemo * or BaseListDemo. * * @version 2.0 */public class StringItemDemo    extends MIDlet    implements CommandListener, ItemCommandListener {    private Display display;    private Form mainForm;    private final static Command CMD_GO = new Command("Go", Command.ITEM, 1);    private final static Command CMD_PRESS = new Command("Press", Command.ITEM, 1);    private final static Command CMD_EXIT = new Command("Exit", Command.EXIT, 1);    /**     * Signals the MIDlet to start and enter the Active state.     */    protected void startApp() {        display = Display.getDisplay(this);        mainForm = new Form("String Item Demo");        mainForm.append("This is a simple label");        StringItem item = new StringItem("This is a StringItem label: ",                                         "This is the StringItems text");        mainForm.append(item);        item = new StringItem("Short label: ", "text");        mainForm.append(item);        item = new StringItem("Hyper-Link ", "hyperlink", Item.HYPERLINK);        item.setDefaultCommand(CMD_GO);        item.setItemCommandListener(this);        mainForm.append(item);        item = new StringItem("Button ", "Button", Item.BUTTON);        item.setDefaultCommand(CMD_PRESS);        item.setItemCommandListener(this);        mainForm.append(item);        mainForm.addCommand(CMD_EXIT);        mainForm.setCommandListener(this);        display.setCurrent(mainForm);    }    public void commandAction(Command c, Item item) {        if (c == CMD_GO) {     //Alter 用于提示信息            String text = "Go to the URL...";            Alert a = new Alert("URL", text, null, AlertType.INFO);            display.setCurrent(a);   //最后可把信息給他        } else if (c == CMD_PRESS) {            String text = "Do an action...";            Alert a = new Alert("Action", text, null, AlertType.INFO);            display.setCurrent(a);        }    }    public void commandAction(Command c, Displayable d) {            destroyApp(false);            notifyDestroyed();    }    /**     * Signals the MIDlet to terminate and enter the Destroyed state.     */    protected void destroyApp(boolean unconditional) {    }    /**     * Signals the MIDlet to stop and enter the Paused state.     */    protected void pauseApp() {    }}