stringitemapperencedemo.java

来自「J2ME手机游戏开发技术详解随书光盘」· Java 代码 · 共 50 行

import javax.microedition.lcdui.*;
import javax.microedition.midlet.MIDlet;
public class StringItemApperenceDemo
    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);
    protected void startApp() {
        display = Display.getDisplay(this);
        mainForm = new Form("StringItem外观模式演示");
        StringItem item = new StringItem("Hyper-Link演示 ", "http://www.163.com", Item.HYPERLINK);
        item.setDefaultCommand(CMD_GO);
        item.setItemCommandListener(this);
        mainForm.append(item);
        item = new StringItem("Button演示", "按钮", 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) {
            String text = "正在连接...";
            Alert a = new Alert("URL", text, null, AlertType.INFO);
            display.setCurrent(a);
        } else if (c == CMD_PRESS) {
            String text = "您已经按下了按钮...";
            Alert a = new Alert("Action", text, null, AlertType.INFO);
            display.setCurrent(a);
        }
    }
    public void commandAction(Command c, Displayable d) {
            destroyApp(false);
            notifyDestroyed();        
    }
    protected void destroyApp(boolean unconditional) {
    }
    protected void pauseApp() {
    }            
}