dialogtest.java

j2me开发精解的源代码

package com.j2medev.chapter3.dialog;

import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;

public class DialogTest extends MIDlet implements CommandListener,DialogListener {
    
    private Display display;
    private Form mainForm;
    private ConfirmationDialog confirm;
    private Command exitCommand = new Command("退出", Command.EXIT,1);

    protected void startApp() throws MIDletStateChangeException {
        if (display == null) {
            display = Display.getDisplay(this);
        }
        confirm = new ConfirmationDialog(display, "你喜欢J2ME技术吗？");
        confirm.setDialogListener(this);//设置监听器
        confirm.display();//显示对话框
    }
    
    protected void pauseApp() {
    }
    
    protected void destroyApp(boolean unconditional) {
        exitMIDlet();
    }
    
    public void dialogDismissed(Dialog d, int code) {
        if (d == confirm) {
            Form result = new Form("结果");
            if (code == ConfirmationDialog.YES) {
                result.append("您选择了喜欢，那就好好努力吧");
            } else {
                result.append("您选择了不喜欢，那就学点其他的吧");
            }
            display.setCurrent(result);
        }
    }
    public void commandAction(Command c, Displayable d) {
        if (c == exitCommand) {
            exitMIDlet();
        }
    }
    public void exitMIDlet() {
        notifyDestroyed();
    }
    
}