movecanvasmidlet.java

一个简单的J2ME程序键盘控制功能

package examples.ch6;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class MoveCanvasMIDlet extends MIDlet implements CommandListener {
	private Display display;
	private MoveCanvas canvas;
	private Command cmdExit;
	public MoveCanvasMIDlet(){
		display=Display.getDisplay(this);
		canvas=new MoveCanvas(this);
		cmdExit=new Command("退出",Command.EXIT,1);
		canvas.addCommand(cmdExit);
		canvas.setCommandListener(this);
		
		
	}
	protected void startApp()
	{
		display.setCurrent(canvas);
	}
	protected void pauseApp()
	{
		
	}
	protected void destroyApp(boolean unconditional)
	{
		
	}
	public void commandAction(Command c,Displayable d){
		if(c==cmdExit){
			exit();
		}
	}
	public void exit()
	{
		destroyApp(true);
   		notifyDestroyed();
		
	}
	
}