ocanvasmidlet.java

Java ME手机应用开发大全一书的配套光盘上的源码

import javax.microedition.lcdui.game.*;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class OCanvasMIDlet extends MIDlet implements CommandListener
{
	private Display display;
	
	private OCanvas myCanvas;
	
	Command exitCmd;
	Command startCmd;
	
	public OCanvasMIDlet(){
		
		display = Display.getDisplay(this);	
		exitCmd  = new Command("Exit",Command.SCREEN, 1);
		startCmd = new Command("StartGame",Command.SCREEN,2);
		
	}

	public void startApp()
	{
		myCanvas = new OCanvas(display);
		myCanvas.addCommand(exitCmd);
		myCanvas.addCommand(startCmd);
		myCanvas.setCommandListener(this);
		myCanvas.start();		
		display.setCurrent(myCanvas);
	}
	
	public void pauseApp(){}
	
	public void destroyApp(boolean unconditional)
	{
	}
	
	public void commandAction(Command c,Displayable s)
	{
		
		if(c == exitCmd ){
		            destroyApp(false);
		            notifyDestroyed();
		}

		if(c == startCmd ){
		            myCanvas.start();
		            display.setCurrent(myCanvas);
		}
		
	}
}