Android蓝牙通信

这里使用的是RFCOMM协议，RFCOMM是一个简单的串行线性仿真协议，此协议提供RS232控制和状态信号。

也就是一个串口（COM）传输协议，波特率为9600，8位数据。所以手机蓝牙可以与另外的蓝牙设备进行通信。

两个设备进行通信，需要建立一个服务端和一个服务端，客户端连接上服务端之后，就可以收发数据。

源代码下载地址：http://download.csdn.net/detail/menghnhhuan/3901081

 

/* 一些常量，代表服务器的名称 */public static final String PROTOCOL_SCHEME_L2CAP = "btl2cap";public static final String PROTOCOL_SCHEME_RFCOMM = "btspp";public static final String PROTOCOL_SCHEME_BT_OBEX = "btgoep";public static final String PROTOCOL_SCHEME_TCP_OBEX = "tcpobex";private BluetoothServerSocket mserverSocket = null;private ServerThread startServerThread = null;//开启服务线程private clientThread clientConnectThread = null;//客户端连接线程private BluetoothSocket socket = null;private BluetoothDevice device = null;private readThread mreadThread = null;//读取数据线程private BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();//蓝牙适配器

 

开启服务端代码

startServerThread = new ServerThread();startServerThread.start();

开启客户端

device = mBluetoothAdapter.getRemoteDevice(address);clientConnectThread = new clientThread();clientConnectThread.start();

服务端代码

//开启服务器private class ServerThread extends Thread { public void run() {try {/* 创建一个蓝牙服务器  * 参数分别：服务器名称、UUID */mserverSocket = mBluetoothAdapter.listenUsingRfcommWithServiceRecord(PROTOCOL_SCHEME_RFCOMM,UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"));Log.d("server", "wait cilent connect...");/* 接受客户端的连接请求 */socket = mserverSocket.accept();Log.d("server", "accept success !");//启动接受数据mreadThread = new readThread();mreadThread.start();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}};

客户端代码：

//开启客户端private class clientThread extends Thread { public void run() {try {//创建一个Socket连接：只需要服务器在注册时的UUID号// socket = device.createRfcommSocketToServiceRecord(BluetoothProtocols.OBEX_OBJECT_PUSH_PROTOCOL_UUID);socket = device.createRfcommSocketToServiceRecord(UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"));//连接socket.connect();//启动接受数据mreadThread = new readThread();mreadThread.start();} catch (IOException e) {Log.e("connect", "", e);Message msg = new Message();msg.obj = "连接服务端异常！断开连接重新试一试。";msg.what = 0;LinkDetectedHandler.sendMessage(msg);} }};

发送和接收数据代码

//发送数据private void sendMessageHandle(String msg) {if (socket == null) {Toast.makeText(mContext, "没有连接", Toast.LENGTH_SHORT).show();return;}try {OutputStream os = socket.getOutputStream(); os.write(msg.getBytes());} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}//读取数据    private class readThread extends Thread {         public void run() {                    byte[] buffer = new byte[1024];            int bytes;            InputStream mmInStream = null;            try {mmInStream = socket.getInputStream();} catch (IOException e1) {// TODO Auto-generated catch blocke1.printStackTrace();}            while (true) {                try {                    // Read from the InputStream                    if( (bytes = mmInStream.read(buffer)) > 0 )                    {                    byte[] buf_data = new byte[bytes];    for(int i=0; i<bytes; i++)    {    buf_data[i] = buffer[i];    }String s = new String(buf_data);Message msg = new Message();msg.obj = s;msg.what = 1;LinkDetectedHandler.sendMessage(msg);                    }                } catch (IOException e) {                try {mmInStream.close();} catch (IOException e1) {// TODO Auto-generated catch blocke1.printStackTrace();}                    break;                }            }        }    }