midpcanvas.java

手机上传图片到服务器 访问web地址 不错的小程序

package com;
/*
 * MIDPCanvas.java
 *
 * Created on 2007年4月12日, 下午3:27
 */

import javax.microedition.lcdui.*;

/**
 *
 * @author  chenzs
 * @version
 */
public class MIDPCanvas extends Canvas implements CommandListener {
    int keypress;
    /**
     * constructor
     */
    public MIDPCanvas() {
        try {
            // Set up this canvas to listen to command events
            setCommandListener(this);
            // Add the Exit command
            addCommand(new Command("Exit", Command.EXIT, 1));
        } catch(Exception e) {
            e.printStackTrace();
        }
    }
    
    /**
     * paint
     */
    public void paint(Graphics g) {
        g.setColor(0xFFffff);
        g.fillRect(0, 0, getWidth(), getHeight());
        g.setColor(0x0);
        g.drawString("Sample Text",0,0,Graphics.TOP|Graphics.LEFT);
        g.drawString("Key press:"+ keypress, 0, 20, g.TOP | g.LEFT);
    }
    
    /**
     * Called when a key is pressed.
     */
    protected  void keyPressed(int keyCode) {
        keypress = keyCode;
        repaint();
    }
    
    /**
     * Called when a key is released.
     */
    protected  void keyReleased(int keyCode) {
    }
    
    /**
     * Called when a key is repeated (held down).
     */
    protected  void keyRepeated(int keyCode) {
    }
    
    /**
     * Called when the pointer is dragged.
     */
    protected  void pointerDragged(int x, int y) {
    }
    
    /**
     * Called when the pointer is pressed.
     */
    protected  void pointerPressed(int x, int y) {
    }
    
    /**
     * Called when the pointer is released.
     */
    protected  void pointerReleased(int x, int y) {
    }
    
    /**
     * Called when action should be handled
     */
    public void commandAction(Command command, Displayable displayable) {
       if(command.getCommandType()==Command.EXIT){
           HttpMidlet.quitApp();
           repaint();
       }
    }
    
}