stupidbtmidlet.java

J2ME 蓝牙实例

import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.AlertType;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.List;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;

/**
 * *
 * 
 * @author Jagie * * MIDlet
 */
public class StupidBTMIDlet extends MIDlet implements CommandListener {
	List list;

	ServerBox sb;

	ClientBox cb;

	/*
	 * * (non-Javadoc) * *
	 * 
	 * @see javax.microedition.midlet.MIDlet#startApp()
	 */
	protected void startApp() throws MIDletStateChangeException {

		list = new List("傻瓜蓝牙入门", List.IMPLICIT);
		list.append("Client", null);
		list.append("Server", null);
		list.setCommandListener(this);
		Display.getDisplay(this).setCurrent(list);
	}

	/**
	 * * debug方法 *
	 * 
	 * @param s
	 *            要显示的字串
	 */
	public void showString(String s) {
		Displayable dp = Display.getDisplay(this).getCurrent();
		Alert al = new Alert(null, s, null, AlertType.INFO);
		al.setTimeout(2000);
		Display.getDisplay(this).setCurrent(al, dp);
	}

	/** * 显示主菜单 * */
	public void showMainMenu() {
		Display.getDisplay(this).setCurrent(list);
	}

	protected void pauseApp() {
		// TODO Auto-generated method stub
	}

	public void commandAction(Command com, Displayable disp) {
		if (com == List.SELECT_COMMAND) {
			List list = (List) disp;
			int index = list.getSelectedIndex();
			if (index == 1) {
				if (sb == null) {
					sb = new ServerBox(this);
				}
				sb.setString(null);
				Display.getDisplay(this).setCurrent(sb);
			} else { // 每次都生成新的客户端实例
				cb = null;
				System.gc();
				cb = new ClientBox(this);
				Display.getDisplay(this).setCurrent(cb);
			}
		}
	}

	protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
		// TODO Auto-generated method stub
	}
}