猜数字游戏,我的第一个J2ME程序,很多问题,有待于…

2008-02-23 09:33:44来源：互联网阅读 ()

import Javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import java.util.*;

/**
*
* @author aoenzh
* @version
*/
public class Test extends MIDlet implements CommandListener{

private Command cmdOK;
private Command cmdEXIT;
private TextField txtInput;
private Form myForm;
private int rndNum;
//private int inputNum;
Display display;
public Test(){

}

public void startApp() {
Random tmpRand=new Random();
rndNum=tmpRand.nextInt(100);
txtInput=new TextField("请输入0-50之间的数字","",25,TextField.NUMERIC);
cmdOK=new Command("确认",Command.SCREEN,1);
cmdEXIT=new Command("退出",Command.EXIT,1);
myForm=new Form("猜数字");
myForm.append(txtInput);
myForm.addCommand(cmdOK);
myForm.addCommand(cmdEXIT);
myForm.setCommandListener(this);
display =Display.getDisplay(this);
display.setCurrent(myForm);
}

public void pauseApp() {
}

public void destroyApp(boolean unconditional) {
}

public void commandAction(Command command, Displayable displayable) {
if(command==cmdEXIT){
destroyApp(true);
notifyDestroyed();
}
if(command==cmdOK){
Alert alert = new Alert("猜数字","",null,AlertType.INFO);
String input = txtInput.getString();
int temp;
if(input.length()>0){
temp = Integer.parseInt(input);
} else{
temp=0;
}
alert.setTimeout(3000);
if(temp > rndNum){
alert.setString("大了，笨蛋！");
Display.getDisplay(this).setCurrent(alert);
}
if(temp == rndNum){
alert.setString("佩服佩服！");
Display.getDisplay(this).setCurrent(alert);
//this.startApp();
}
if(temp < rndNum){
alert.setString("小了，笨蛋！");
Display.getDisplay(this).setCurrent(alert);
}
txtInput.setString("");
}
}

}