testbox.java

一个用j2me高级类写的界面类,它可以像excel那样记录一些数据保存到手机里,自己写的类欢迎大家一起来看看,多提宝贵意见,一起学习

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

public class testBox extends MIDlet implements CommandListener {
    private Display display;
    //
    private Box box;
    //
    public testBox() {

    }
    //
    //private int dateTime = 15456;
    //     日期
    //private DateField date;
    //     日期
    private TextField date;
    //     油量
    private TextField gas;
    //     每公里油耗
    private TextField pergas;
    //     油耗的具体取值
    private String gasPoint = "";
    //
    private String datetime = "";//2007-9-3
    //
    private String gasPer = "";
    private final static Command EXIT = new Command("Exit",Command.EXIT,1);
    private final static Command BACK = new Command("Back",Command.BACK,1);
    public void startApp() {
        long datee = System.currentTimeMillis();
        if(box == null){
            box = new Box(this);
        }
        if (display == null) {
            display = Display.getDisplay(this);
        }
        display.setCurrent(box);

        Form ff = new Form("油耗测试");
        date = new TextField("日期:", datetime, 20, TextField.ANY);
        gas = new TextField("油耗:", gasPoint, 15, TextField.NUMERIC);
        pergas = new TextField("百公里油耗:", gasPer, 15, TextField.NUMERIC);
        TextField   dd = new TextField ("ddd:","rrrr",18,TextField.ANY);

        //System.out.println("gasPoint = " + gasPoint);

        ff.append(date);
        ff.append(gas);
        ff.append(pergas);
        ff.append(dd);
        ff.addCommand(EXIT);
        ff.addCommand(BACK);
        ff.setTicker(new Ticker("欢迎光临!!!"));
        display.setCurrent(ff);

        //ff.append()

    }

    public void pauseApp() {
    }

    public void destroyApp(boolean unconditional) {
        System.out.println("gasPoint = " + gasPoint);
        notifyDestroyed();
    }
    public void commandAction(Command c,Displayable  d){
        if(c == EXIT){
            destroyApp(true);
        }
    }
    //
}