soundtest.java

一个简单的小例子说明了j2me中

import java.io.IOException;
import java.io.InputStream;

import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.media.Manager;
import javax.microedition.media.MediaException;
import javax.microedition.media.Player;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;

/*
 * Created on 2005-1-4
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */

/**
 * @author a
 * 
 * TODO To change the template for this generated type comment go to Window -
 * Preferences - Java - Code Style - Code Templates
 */
public class SoundTest extends MIDlet implements CommandListener {

	Command sound;

	public SoundTest() {
		sound = new Command("播放声音", Command.SCREEN, 1);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see javax.microedition.midlet.MIDlet#startApp()
	 */
	protected void startApp() throws MIDletStateChangeException {
		Form f = new Form("sound test");
		f.append("测试声音");
		f.addCommand(sound);
		f.setCommandListener(this);
		Display.getDisplay(this).setCurrent(f);

	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see javax.microedition.midlet.MIDlet#pauseApp()
	 */
	protected void pauseApp() {
		// TODO Auto-generated method stub

	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see javax.microedition.midlet.MIDlet#destroyApp(boolean)
	 */
	protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
		// TODO Auto-generated method stub

	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see javax.microedition.lcdui.CommandListener#commandAction(javax.microedition.lcdui.Command,
	 *      javax.microedition.lcdui.Displayable)
	 */
	public void commandAction(Command arg0, Displayable arg1) {

		if (arg0 == sound)
			try {
				InputStream in = getClass()
						.getResourceAsStream("/vip.mid");
				Player p = Manager.createPlayer(in, "audio/midi");
				p.start();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (MediaException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		/*try {
			//				音调55 (0到127之间)
			//				400毫秒
			//				音量50
			Manager.playTone(55, 400, 50);
		} catch (MediaException e) {
		}*/

	}
}