bluetoothprobemidlet.java

用于手机或其他支持蓝牙的设备上

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

/**
 *
 * <p>Title: BluetoothProbeMidlet.java</p>
 *
 * <p>Description: A simple JSR-82 compliant Bluetooth enabled Midlet that
 * searches the area for Bluetooth devices, and displays the Bluetooth
 * Profiles that they support.</p>
 *
 * <p>Copyright: Copyright(c) 2005</p>
 *
 * <p>By: Bruce Hopkinsn</p>
 *
 * @version 1.0
 */

public class BluetoothProbeMidlet extends MIDlet implements CommandListener {
	Form form;

	DeviceDiscoverer deviceDiscoverer;
	ServiceDiscoverer serviceDiscoverer;

	Command exitCommand;
	Command findDevicesCommand;
	Command serviceSearchCommand;

        /**
         * A simple constructor
         */
        public BluetoothProbeMidlet() {
		form = new Form("Bluetooth Probe");

		exitCommand = new Command("Exit", Command.EXIT, 0);
		findDevicesCommand = new Command("Find", Command.OK, 0);
		serviceSearchCommand = new Command("Search", Command.OK, 0);

		updateStatus("Welcome to the Bluetooth Probe Application!");
		updateStatus("\nClick on the Find button to find Bluetooth devices in the vicinity");

		form.addCommand(exitCommand);
		form.addCommand(findDevicesCommand);
		form.setCommandListener(this);

	}

	public void startApp() {
		Display.getDisplay(this).setCurrent(form);

	}

	public void pauseApp() {}

	public void destroyApp(boolean unconditional) {}

        /**
         * This method takes the input from the phone, and exits the app,
         * finds new Bluetooth devices, or searches for services on devices that
         * have been already found.
         * @param c Command
         * @param s Displayable
         */

	public void commandAction(Command c, Displayable s) {

		if(c.getLabel().equals("Exit")){
			notifyDestroyed();
		}

		if(c.getLabel().equals("Find")){
			form.deleteAll();
			deviceDiscoverer = new DeviceDiscoverer(this);
			form.removeCommand(findDevicesCommand);
		}

		if(c.getLabel().equals("Search")){

			form.deleteAll();
			updateStatus("Searching for services...");

			for(int i=0; i<deviceDiscoverer.remoteDevices.size(); i++){

				serviceDiscoverer = new ServiceDiscoverer(this, (RemoteDevice)deviceDiscoverer.remoteDevices.elementAt(i));
				serviceDiscoverer.start();

				try{
					Thread.sleep(3000);
				} catch(Exception e){}

			}
		}

	}

        /**
         * This method updates the Midlet's form
         * @param status String
         */

	public void updateStatus(String status){

		form.append(new StringItem(null, "\n" + status));

	}

}