immutableimagedemo.java

一个采用J2ME的游戏程序,对游戏开发者很具有参考价值,适合用于二次开发

package immutableimagedemo;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
public class immutableImageDemo extends MIDlet implements CommandListener
{
        private Display display;
        private ImageCanvas myCanvas;
        private Command  arrayCmd = new Command("从数组读取", Command.SCREEN, 1);
        private Command   fileCmd = new Command("从文件读取", Command.SCREEN, 1);
        private Command streamCmd = new Command("从输入流读取",Command.SCREEN, 1);
        private Command  transCmd = new Command(" 翻转图像", Command.SCREEN, 1);
        private Command clarityCmd= new Command(" 透明图像", Command.SCREEN, 1);
        private Command   exitCmd = new Command(" 退出", Command.SCREEN, 1);

        public immutableImageDemo()
        {
        	myCanvas = new ImageCanvas();
                display = Display.getDisplay(this);
                myCanvas.addCommand(arrayCmd);
                myCanvas.addCommand(fileCmd);
                myCanvas.addCommand(streamCmd);
                myCanvas.addCommand(transCmd); 
                myCanvas.addCommand(clarityCmd);
                myCanvas.addCommand(exitCmd);                                
                myCanvas.setCommandListener(this);
        }
        public void startApp()
        {
                
                 display.setCurrent(myCanvas);
        }
        public void pauseApp()
        {
        }
        public void destroyApp(boolean unconditional)
        {
        }
        public void commandAction(Command cmd, Displayable disp) {
        if(cmd == exitCmd){
        destroyApp(false);
        notifyDestroyed();
        return;
        }
        if (cmd == arrayCmd){
        myCanvas.type = myCanvas.ARRAY;
        }
        else if(cmd == fileCmd){
        myCanvas.type = myCanvas.FILE;        	
        }
        else if(cmd == streamCmd){
        myCanvas.type = myCanvas.STREA;
        }
        else if(cmd == transCmd){
        myCanvas.type = myCanvas.TRANS;	
        }
        else if(cmd == clarityCmd){
        myCanvas.type = myCanvas.CLARITY;	
        }
        myCanvas.repaint();
        
        }
}