GAMELOFT新出的游戏MiamiNights中开始页面有个 波浪字体很漂亮, “PRESS 5” 7个字符依次向空中飞起再落下 晚上想了下写了出来.

import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
public class DrawCanvas extends MIDlet implements CommandListener {
 private Command exitCommand;
 private HCanvas sg;
 public DrawCanvas() {
  exitCommand = new Command("Exit", Command.EXIT, 1);
  sg = new HCanvas();
  sg.addCommand(exitCommand);
  sg.setCommandListener(this);
  Display.getDisplay(this).setCurrent(sg);
  
 }
 protected void startApp(){
 }
 protected void pauseApp() {
 }
 protected void destroyApp(boolean arg0){  
 }
 public void commandAction(Command c, Displayable d) {
  if (c == exitCommand) {   
   destroyApp(false);   
   notifyDestroyed();
  }
 } 
}
class HCanvas extends Canvas implements Runnable{
 
  private String str=new String("PRESS 5");
  private int[] ak={0,0,0,0,0,0,0,1,2,3,3,2,1,0,0,0,0,0,0,0};
  boolean kaishi=true;
  private int k=6;
 
 public HCanvas (){
  new Thread(this).start();
 }
               
  protected void paint(Graphics g){
   g.setColor(0x00ffffff);
   g.fillRect(0,0,getWidth(),getHeight());
   g.setColor(0x00000000);
   for(int i=0;i< str.length();i++){
     g.drawString(str.substring(i,i+1),20+i*7,10-ak[k-i],0);
     g.drawString(str.substring(i,i+1),21+i*7,11-ak[k-i],0);//加重字体7是字体宽度
   } 
}
   public void run(){
    while(kaishi){
     try {
      repaint();    //再描绘
     Thread.sleep(70);  //等待一定时间
       k++;
     if(k>(ak.length-1)) k=6;  
     }
    catch(InterruptedException e){}
    }  
   }