microtankmidlet.java

通过一个坦克的小例子介绍了j2me精灵类的用法

import java.io.IOException;

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

public class MicroTankMIDlet extends MIDlet implements CommandListener {
	private MicroTankCanvas mMicroTankCanvas;

	public void startApp() {
		if (mMicroTankCanvas == null) {
			try {
				mMicroTankCanvas = new MicroTankCanvas();
				mMicroTankCanvas.start();
				Command exitCommand = new Command("Exit", Command.EXIT, 0);
				mMicroTankCanvas.addCommand(exitCommand);
				mMicroTankCanvas.setCommandListener(this);
			} catch (IOException ioe) {
				System.out.println(ioe);
			}
		}

		Display.getDisplay(this).setCurrent(mMicroTankCanvas);
	}

	public void pauseApp() {
	}

	public void destroyApp(boolean unconditional) {
		if (mMicroTankCanvas != null)
			mMicroTankCanvas.stop();
	}

	public void commandAction(Command c, Displayable s) {
		if (c.getCommandType() == Command.EXIT) {
			destroyApp(true);
			notifyDestroyed();
		}
	}
}