BlackBerry 蓝牙编程 - 搜索蓝牙设备

[blackberry]代码库

/**
 * BlackBerry 蓝牙编程 - 搜索蓝牙设备
 * 
 */
public class BlueEngine implements Runnable, DiscoveryListener {

	private DiscoveryAgent agent = null;
	private StreamConnection streamConnection = null;
	private DataInputStream dis = null;
	private DataOutputStream dos = null;
	private Thread thread = null;
	private int maxServiceSearches = 0;
	private int serviceSearchCount;
	private ServiceRecord record = null;
	private Vector deviceList;

	public String command = null;
	public String url = null;
	public String macId = null;

	private Object bluelock = new Object();

	public BlueEngine() {
	}

	/**
	 * 初始化蓝牙设备
	 * 
	 * @throws Exception
	 */
	public void initBluetooth() throws Exception {
		LocalDevice local = LocalDevice.getLocalDevice();// 获取本地设备
		macId = local.getBluetoothAddress();// 获取本地蓝牙设备MACID
		agent = local.getDiscoveryAgent();// 获取蓝牙设备搜索代理

		try { // 获取最大服务搜索数
			maxServiceSearches = Integer.parseInt(LocalDevice
					.getProperty("bluetooth.sd.trans.max"));
		} catch (NumberFormatException e) {
		}

		deviceList = new Vector(); // 蓝牙设备队列
	}

	/**
	 * 获取蓝牙地址
	 * 
	 * @throws Exception
	 */
	public void getBluetoothUrl() throws Exception {
		record = findService();
		url = record.getConnectionURL(ServiceRecord.NOAUTHENTICATE_NOENCRYPT,
				false);
	}

	/**
	 * 搜索蓝牙设备
	 * 
	 * @return
	 */
	public ServiceRecord findService() {

		try {

			agent.startInquiry(DiscoveryAgent.GIAC, this);// 启动搜索代理发现设备 并与
															// DiscoveryListener
															// 注册回调

			// 设备搜索过程是异步的 ，这里需要同步搜索过 程
			// 设备搜索完毕会通知主线程继续运行
			synchronized (bluelock) {
				try {
					bluelock.wait();
				} catch (Exception e) {
				}
			}
		} catch (BluetoothStateException e) {
			System.out.println("Unable to find devices to search");
		}

		// 蓝牙设备 队列不为 空，启动 服务搜 索
		if (deviceList.size() > 0) {
			if (searchServices(deviceList)) {
				return record;
			}
		}

		return null;
	}

	/**
	 * 发现蓝牙设备
	 * 
	 * @param btDevice
	 * @param cod
	 */
	public void deviceDiscovered(RemoteDevice btDevice, DeviceClass cod) {
		// 当发现蓝牙设备时，如 果该设备蓝牙模块的 id 以 00027 开头
		// 则收入该设备
		if (btDevice.getBluetoothAddress().startsWith("00027")) {
			deviceList.addElement(btDevice);
		}
	}

	/**
	 * 搜索完毕
	 * 
	 * @param discType
	 */
	public void inquiryCompleted(int discType) {
		// 蓝牙搜索执行完 毕，通知主线程继续
		synchronized (bluelock) {
			try {
				bluelock.notify();
			} catch (Exception e) {
			}
		}
	}
}