这个跟其他J2ME的开发一样，稍微提一下做个备份。
/** *//**
* MidletSample.java
*
* (c) Research In Motion Limited, 2003-2004. Confidential and proprietary.
*/
import java.util.*;
import java.io.*;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import java.lang.*;
/** *//**
* An Example MIDlet.
* The application must extend the MIDlet class to allow the application management software to control the MIDlet.
*/
public class MidletSample extends MIDlet implements CommandListener
{
private Display display;
/** *//**
* <p>The default constructor. Say hello world
*/
public MidletSample()
{
//create a simple screen
// Form form = new Form("Hello Form");
// form.append( new StringItem( "Hello World", null ) );
// Command back = new Command("Back", Command.BACK, 0);
// form.addCommand(back);
// form.setCommandListener(this);
// Display.getDisplay(this).setCurrent(form);
this.display = Display.getDisplay(this);
MainCanvas main = new MainCanvas(this);
Show(main);
}
public void Show(Displayable d)
{
display.setCurrent(d);
}
/** *//**
* <p>Signals the MIDlet that it has entered the Active state.
*/
public void startApp()
{
}
/** *//**
* <p>Signals the MIDlet to stop and enter the Pause state.
*/
public void pauseApp()
{
}
/** *//**
* <p>Signals the MIDlet to terminate and enter the Destroyed state.
* @param unconditional When set to true, the MIDlet must cleanup and release all resources. Otherwise, the MIDlet may
* throw a MIDletStateChangeException to indicate it does not want to be destroyed at this time.
*/
public void destroyApp(boolean unconditional)
{
}
public void commandAction(Command c, Displayable d) {
// TODO Auto-generated method stub
if(c.getCommandType() == Command.BACK)
this.notifyDestroyed();
}
}import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Graphics;
public class MainCanvas extends Canvas {
private MidletSample midletSample = null;
public MainCanvas(MidletSample midletSample)
{
this.midletSample = midletSample;
}
protected void paint(Graphics g) {
// TODO Auto-generated method stub
}
public void keyPressed(int key){
Alert al = new Alert(String.valueOf(key));
al.setTimeout(5000);
midletSample.Show(al);
}
}
这个程序同时也是用来测试键值的。
---------------------------------------------------------
专注移动开发
Android, Windows Mobile, iPhone, J2ME, BlackBerry, Symbian
posted on 2009-12-13 12:20
TiGERTiAN 阅读(1312)
评论(2) 编辑 收藏 所属分类:
J2ME 、
BlackBerry