drummerdemo.java

击鼓程序的实现。注：其中的背景图片Logo.png文件请放在资源文件夹中。

package Drummer;

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.media.*;
import javax.microedition.media.control.*;

public class DrummerDemo extends MIDlet implements CommandListener {
	private Player mp;

	private Display display;

	private DrummerCanvas drummer;

	private Command exitCommand = new Command("Exit", Command.EXIT, 2);
	private Command playCommand = new Command("Play", Command.ITEM, 1);

	public DrummerDemo() {
		display = Display.getDisplay(this);
		drummer = new DrummerCanvas(display);
	}

	public void startApp() {				

		display.setCurrent(drummer);
	}

	public void destroyApp(boolean unconditional) {
	}

	public void pauseApp() {
	}

	public void commandAction(Command c, Displayable s) {
		if (c == exitCommand) {
			destroyApp(false);
			notifyDestroyed();
		}
		if (c == playCommand) {
			simpleTone();
		}
	}

	private void simpleTone() {
		try {
			Manager.playTone(ToneControl.C4, 100, 80);
		} catch (Exception ex) {
		}
	}
}