蓝牙

package com.UARTLoopback;

import java.util.ArrayList;
import java.util.Set;

import android.app.Activity;
import android.app.AlertDialog;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

public abstract class BluetoothChat extends Activity {

// Message types sent from the BluetoothChatService Handler
public static final int MESSAGE_STATE_CHANGE = 1;
public static final int MESSAGE_READ = 2;
public static final int MESSAGE_WRITE = 3;
public static final int MESSAGE_DEVICE_NAME = 4;
public static final int MESSAGE_TOAST = 5;

// Key names received from the BluetoothChatService Handler
public static final String DEVICE_NAME = "device_name";
public static final String TOAST = "toast";

// Intent request codes
private static final int REQUEST_CONNECT_DEVICE = 1;
private static final int REQUEST_ENABLE_BT = 2;

private TextView mTitle;
private EditText text_chat;
private EditText text_input;
private Button but_On_Off;
private Button but_search; //------> 在菜单中可以搜索
private Button but_create; //------> 在菜单中设置"可被发现"
private Button mSendButton;
//连接到的蓝牙设备的名称
private String mConnectedDeviceName;
// String buffer for outgoing messages
private StringBuffer mOutStringBuffer;
// Local Bluetooth adapter
private BluetoothAdapter mBluetoothAdapter = null;
// Member object for the chat services
private BluetoothChatService mChatService = null;

private ArrayList<String> mPairedDevicesList = new ArrayList<String>();
private ArrayList<String> mNewDevicesList = new ArrayList<String>();
private String[] strName;
private String address;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.blue_chat_main);

mTitle = (TextView) this.findViewById(R.id.text_title);
text_chat = (EditText) this.findViewById(R.id.text_chat);
text_input = (EditText) this.findViewById(R.id.text_input);
but_On_Off = (Button) this.findViewById(R.id.but_off_on);
but_search = (Button) this.findViewById(R.id.but_search_div);
but_create = (Button) this.findViewById(R.id.but_cjlj);
mSendButton = (Button) this.findViewById(R.id.but_fsxx);

//获得本地的蓝牙适配器
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
//如果为null,说明没有蓝牙设备
if (mBluetoothAdapter == null) {
Toast.makeText(this, "没有蓝牙设备", Toast.LENGTH_LONG).show();
finish();
return;
}

if(mBluetoothAdapter.isEnabled()){
but_On_Off.setText("关闭蓝牙");
}else{
but_On_Off.setText("开启蓝牙");
}

but_On_Off.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
if(!mBluetoothAdapter.isEnabled()){
mBluetoothAdapter.enable();
Toast.makeText(BluetoothChat.this, "蓝牙已开启", Toast.LENGTH_SHORT).show();
but_On_Off.setText("关闭蓝牙");
}else{
mBluetoothAdapter.disable();
Toast.makeText(BluetoothChat.this, "蓝牙已关闭", Toast.LENGTH_SHORT).show();
but_On_Off.setText("开启蓝牙");
}
}
});

but_search.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
//				searchDevice();
//				BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
//				// 判断蓝牙是否打开
//				if (!mBluetoothAdapter.isEnabled())
//					mBluetoothAdapter.enable();
//				Set<BluetoothDevice> devices=mBluetoothAdapter.getBondedDevices();
//				if(devices.size()<=0)
//				{
//					return;
//				}
//				ArrayList<BluetoothDevice> btDev=new ArrayList<BluetoothDevice>();
//				for(BluetoothDevice divice:devices){
//					System.out.println("devicenam==="+divice.getName()+divice.getAddress());
//					btDev.add(divice);
//					mPairedDevicesList.add(divice.getAddress());
//				}
linkDevice();
}
});

but_create.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {

final EditText et = new EditText(BluetoothChat.this);
et.setSingleLine();
et.setText(mBluetoothAdapter.getName());

new AlertDialog.Builder(BluetoothChat.this)
.setTitle("请输入房间名：")
.setView(et)
.setPositiveButton("确定", new DialogInterface.OnClickListener(){

@Override
public void onClick(DialogInterface dialog, int which) {
String name = et.getText().toString().trim();
if(name.equals("")){
Toast.makeText(BluetoothChat.this, "请输入房间名", Toast.LENGTH_SHORT).show();
return;
}
//设置房间名
mBluetoothAdapter.setName(name);
}

})
.setNegativeButton("取消", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {

}
})
.create().show();

//创建连接，也就是设备本地蓝牙设备可被其他用户的蓝牙搜到
ensureDiscoverable();
}
});

// 获得一个已经配对的蓝牙设备的set集合
Set<BluetoothDevice> pairedDevices = mBluetoothAdapter.getBondedDevices();
if (pairedDevices.size() > 0) {
for (BluetoothDevice device : pairedDevices) {
mPairedDevicesList.add("已配对："+device.getName() + "\n" + device.getAddress());
}
} else {
Toast.makeText(this, "没有已配对的设备", Toast.LENGTH_SHORT).show();
}

//当发现一个新的蓝牙设备时注册广播
IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
this.registerReceiver(mReceiver, filter);

//当搜索完毕后注册广播
filter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
this.registerReceiver(mReceiver, filter);

}

@Override
public void onStart() {
super.onStart();
// If BT is not on, request that it be enabled.
// setupChat() will then be called during onActivityResult
if (!mBluetoothAdapter.isEnabled()) {
Intent enableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableIntent, REQUEST_ENABLE_BT);
// Otherwise, setup the chat session
} else {
if (mChatService == null) setupChat();
}
}

@Override
public synchronized void onResume() {
super.onResume();
// Performing this check in onResume() covers the case in which BT was
// not enabled during onStart(), so we were paused to enable it...
// onResume() will be called when ACTION_REQUEST_ENABLE activity returns.
if (mChatService != null) {
// Only if the state is STATE_NONE, do we know that we haven't started already
if (mChatService.getState() == BluetoothChatService.STATE_NONE) {
// Start the Bluetooth chat services
mChatService.start();
}
}
}

private void setupChat() {

mSendButton.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// Send a message using content of the edit text widget
String message = text_input.getText().toString();
sendMessage(message);
}
});

// Initialize the BluetoothChatService to perform bluetooth connections
mChatService = new BluetoothChatService(this, mHandler);

// Initialize the buffer for outgoing messages
mOutStringBuffer =
4000
new StringBuffer("");
}

@Override
public void onDestroy() {
super.onDestroy();
// Stop the Bluetooth chat services
if (mChatService != null) mChatService.stop();

// Make sure we're not doing discovery anymore
if (mBluetoothAdapter != null) {
mBluetoothAdapter.cancelDiscovery();
}
// Unregister broadcast listeners
this.unregisterReceiver(mReceiver);
}

/** 使本地的蓝牙设备可被发现 */
private void ensureDiscoverable() {
if (mBluetoothAdapter.getScanMode() !=
BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE) {
Intent discoverableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
discoverableIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);
startActivity(discoverableIntent);
}
}

/**
* Sends a message.
* @param message  A string of text to send.
*/
public void sendMessage(String message) {
// Check that we're actually connected before trying anything
if (mChatService.getState() != BluetoothChatService.STATE_CONNECTED) {
Toast.makeText(this,"蓝牙没有连接上", Toast.LENGTH_SHORT).show();
return;
}

// Check that there's actually something to send
if (message.length() > 0) {
// Get the message bytes and tell the BluetoothChatService to write
byte[] send = message.getBytes();
mChatService.write(send);

// Reset out string buffer to zero and clear the edit text field
mOutStringBuffer.setLength(0);
text_input.setText(mOutStringBuffer);
}
}

// The Handler that gets information back from the BluetoothChatService
private final Handler mHandler = new Handler() {

@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MESSAGE_STATE_CHANGE:
switch (msg.arg1) {
case BluetoothChatService.STATE_CONNECTED:
mTitle.setText("已经连接");
mTitle.append(mConnectedDeviceName);
//mConversationArrayAdapter.clear();
break;
case BluetoothChatService.STATE_CONNECTING:
mTitle.setText("正在连接中...");
break;
case BluetoothChatService.STATE_LISTEN:
case BluetoothChatService.STATE_NONE:
mTitle.setText("未连接上");
break;
}
break;
case MESSAGE_WRITE:
byte[] writeBuf = (byte[]) msg.obj;
// construct a string from the buffer
String writeMessage = new String(writeBuf);
//mConversationArrayAdapter.add("Me:  " + writeMessage);
text_chat.append("我："+ writeMessage + "\n");
break;
case MESSAGE_READ:
byte[] readBuf = (byte[]) msg.obj;
// construct a string from the valid bytes in the buffer
String readMessage = new String(readBuf, 0, msg.arg1);
//mConversationArrayAdapter.add(mConnectedDeviceName+":  " + readMessage);
text_chat.append(mConnectedDeviceName +"：" + readMessage + "\n");
showBlueToothMoney(readMessage);
break;
case MESSAGE_DEVICE_NAME:
// save the connected device's name
mConnectedDeviceName = msg.getData().getString(DEVICE_NAME);
Toast.makeText(getApplicationContext(), "连接到 "
+ mConnectedDeviceName, Toast.LENGTH_SHORT).show();
break;
case MESSAGE_TOAST:
Toast.makeText(getApplicationContext(), msg.getData().getString(TOAST),
Toast.LENGTH_SHORT).show();
break;
}
}
};

//连接蓝牙设备
public void linkDevice(){
if(mBluetoothAdapter.isDiscovering()){
mBluetoothAdapter.cancelDiscovery();
}
int cou = mPairedDevicesList.size() + mNewDevicesList.size();
if(cou == 0){
Toast.makeText(BluetoothChat.this, "没有搜索到可用的蓝牙设备", Toast.LENGTH_SHORT).show();
return;
}

//把已经配对的蓝牙设备和新发现的蓝牙设备的名称都放入数组中，以便在对话框列表中显示
strName = new String[cou];
for(int i = 0; i < mPairedDevicesList.size(); i++){
strName[i] = mPairedDevicesList.get(i);
}
for(int i = mPairedDevicesList.size(); i < strName.length; i++){
strName[i] = mNewDevicesList.get(i - mPairedDevicesList.size());
}
address = strName[0].substring(strName[0].length() - 17);
new AlertDialog.Builder(BluetoothChat.this)
.setTitle("搜索到的蓝牙设备：")
.setSingleChoiceItems(strName, 0, new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
//当用户点击选中的蓝牙设备时，取出选中的蓝牙设备的MAC地址
address = strName[which].split("\\n")[1].trim();
}
})
.setPositiveButton("连接", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
if(address == null){
Toast.makeText(BluetoothChat.this, "请先连接外部蓝牙设备", Toast.LENGTH_SHORT).show();
return;
}

Log.i("sxd","address:"+address);
// Get the BLuetoothDevice object
BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address);
// Attempt to connect to the device
mChatService.connect(device);
}
})
.setNegativeButton("取消", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {

}
}).create().show();
}

abstract void showBlueToothMoney(String readMessage);

//搜索蓝牙设备蓝牙设备
private void searchDevice(){
mTitle.setText("正在努力搜索中...");
setProgressBarIndeterminateVisibility(true);
if (mBluetoothAdapter.isDiscovering()) {
mBluetoothAdapter.cancelDiscovery();
}
mNewDevicesList.clear();
mBluetoothAdapter.startDiscovery();
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
menu.add(0, 1, 0, "搜索设备");
menu.add(0, 2, 0, "可被发现");
return true;
}

private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
// 当发现一个新的蓝牙设备时
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
// If it's already paired, skip it, because it's been listed already
if (device.getBondState() != BluetoothDevice.BOND_BONDED) {
String s = "未配对： "+ device.getName() + "\n" + device.getAddress();
if(!mNewDevicesList.contains(s))
mNewDevicesList.add(s);
}
// When discovery is finished, change the Activity title
} else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) {
setProgressBarIndeterminateVisibility(false);
if (mNewDevicesList.size() == 0) {
Toast.makeText(BluetoothChat.this, "没有发现新设备", Toast.LENGTH_SHORT).show();
}
mTitle.setText("未连接");
linkDevice();
}
}
};

@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case 1:
//        	searchDevice();
linkDevice();
return true;
case 2:
// Ensure this device is discoverable by others
ensureDiscoverable();
return true;
}
return false;
}

}

package com.UARTLoopback;

/*
* Copyright (C) 2009 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*      http://www.apache.org/licenses/LICENSE-2.0 *
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.UUID;

import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothServerSocket;
import android.bluetooth.BluetoothSocket;
import android.content.Context;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;

/**
* This class does all the work for setting up and managing Bluetooth
* connections with other devices. It has a thread that listens for
* incoming connections, a thread for connecting with a device, and a
* thread for performing data transmissions when connected.
*/
public class BluetoothChatService {
// Debugging
private static final String TAG = "BluetoothChatService";
private static final boolean D = true;

// Name for the SDP record when creating server socket
private static final String NAME = "BluetoothChat";

// Unique UUID for this application
private static final UUID MY_UUID = UUID.fromString("fa87c0d0-afac-11de-8a39-0800200c9a66");

// Member fields
private final BluetoothAdapter mAdapter;
private final Handler mHandler;
private AcceptThread mAcceptThread;
private ConnectThread mConnectThread;
private ConnectedThread mConnectedThread;
private int mState;

// Constants that indicate the current connection state
public static final int STATE_NONE = 0;       // we're doing nothing
public static final int STATE_LISTEN = 1;     // now listening for incoming connections
public static final int STATE_CONNECTING = 2; // now initiating an outgoing connection
public static final int STATE_CONNECTED = 3;  // now connected to a remote device

/**
* Constructor. Prepares a new BluetoothChat session.
* @param context  The UI Activity Context
* @param handler  A Handler to send messages back to the UI Activity
*/
public BluetoothChatService(Context context, Handler handler) {
mAdapter = BluetoothAdapter.getDefaultAdapter();
mState = STATE_NONE;
mHandler = handler;
}

/**
* Set the current state of the chat connection
* @param state  An integer defining the current connection state
*/
private synchronized void setState(int state) {
if (D) Log.d(TAG, "setState() " + mState + " -> " + state);
mState = state;

// Give the new state to the Handler so the UI Activity can update
mHandler.obtainMessage(BluetoothChat.MESSAGE_STATE_CHANGE, state, -1).sendToTarget();
}

/**
* Return the current connection state. */
public synchronized int getState() {
return mState;
}

/**
* Start the chat service. Specifically start AcceptThread to begin a
* session in listening (server) mode. Called by the Activity onResume() */
public synchronized void start() {
if (D) Log.d(TAG, "start");

// Cancel any thread attempting to make a connection
if (mConnectThread != null) {mConnectThread.cancel(); mConnectThread = null;}

// Cancel any thread currently running a connection
if (mConnectedThread != null) {mConnectedThread.cancel(); mConnectedThread = null;}

// Start the thread to listen on a BluetoothServerSocket
if (mAcceptThread == null) {
mAcceptThread = new AcceptThread();
mAcceptThread.start();
}
setState(STATE_LISTEN);
}

/**
* Start the ConnectThread to initiate a connection to a remote device.
* @param device  The BluetoothDevice to connect
*/
public synchronized void connect(BluetoothDevice device) {
if (D) Log.d(TAG, "connect to: " + device);

// Cancel any thread attempting to make a connection
if (mState == STATE_CONNECTING) {
if (mConnectThread != null) {mConnectThread.cancel(); mConnectThread = null;}
}

// Cancel any thread currently running a connection
if (mConnectedThread != null) {mConnectedThread.cancel(); mConnectedThread = null;}

// Start the thread to connect with the given device
mConnectThread = new ConnectThread(device);
mConnectThread.start();
setState(STATE_CONNECTING);
}

/**
* Start the ConnectedThread to begin managing a Bluetooth connection
* @param socket  The BluetoothSocket on which the connection was made
* @param device  The BluetoothDevice that has been connected
*/
public synchronized void connected(BluetoothSocket socket, BluetoothDevice device) {
if (D) Log.d(TAG, "connected");

// Cancel the thread that completed the connection
if (mConnectThread != null) {mConnectThread.cancel(); mConnectThread = null;}

// Cancel any thread currently running a connection
if (mConnectedThread != null) {mConnectedThread.cancel(); mConnectedThread = null;}

// Cancel the accept thread because we only want to connect to one device
if (mAcceptThread != null) {mAcceptThread.cancel(); mAcceptThread = null;}

// Start the thread to manage the connection and perform transmissions
mConnectedThread = new ConnectedThread(socket);
mConnectedThread.start();

// Send the name of the connected device back to the UI Activity
Message msg = mHandler.obtainMessage(BluetoothChat.MESSAGE_DEVICE_NAME);
Bundle bundle = new Bundle();
bundle.putString(BluetoothChat.DEVICE_NAME, device.getName());
msg.setData(bundle);
mHandler.sendMessage(msg);

setState(STATE_CONNECTED);
}

/**
* Stop all threads
*/
public synchronized void stop() {
if (D) Log.d(TAG, "stop");
if (mConnectThread != null) {mConnectThread.cancel(); mConnectThread = null;}
if (mConnectedThread != null) {mConnectedThread.cancel(); mConnectedThread = null;}
if (mAcceptThread != null) {mAcceptThread.cancel(); mAcceptThread = null;}
setState(STATE_NONE);
}

/**
* Write to the ConnectedThread in an unsynchronized manner
* @param out The bytes to write
* @see ConnectedThread#write(byte[])
*/
public void write(byte[] out) {
// Create temporary object
ConnectedThread r;
// Synchronize a copy of the ConnectedThread
synchronized (this) {
if (mState != STATE_CONNECTED) return;
r = mConnectedThread;
}
// Perform the write unsynchronized
r.write(out);
}

/**
* Indicate that the connection attempt failed and notify the UI Activity.
*/
private void connectionFailed() {
setState(STATE_LISTEN);

// Send a failure message back to the Activity
Message msg = mHandler.obtainMessage(BluetoothChat.MESSAGE_TOAST);
Bundle bundle = new Bundle();
bundle.putString(BluetoothChat.TOAST, "connectionFailed");
msg.setData(bundle);
mHandler.sendMessage(msg);
}

/**
* Indicate that the connection was lost and notify the UI Activity.
*/
private void connectionLost() {
setState(STATE_LISTEN);

// Send a failure message back to the Activ
da9c
ity
Message msg = mHandler.obtainMessage(BluetoothChat.MESSAGE_TOAST);
Bundle bundle = new Bundle();
bundle.putString(BluetoothChat.TOAST, "connectionLost");
msg.setData(bundle);
mHandler.sendMessage(msg);
}

/**
* This thread runs while listening for incoming connections. It behaves
* like a server-side client. It runs until a connection is accepted
* (or until cancelled).
*/
private class AcceptThread extends Thread {
// The local server socket
private final BluetoothServerSocket mmServerSocket;

public AcceptThread() {
BluetoothServerSocket tmp = null;
// Create a new listening server socket
try {
//                tmp = mAdapter.listenUsingRfcommWithServiceRecord(NAME, MY_UUID);
Method listenMethod = mAdapter.getClass().getMethod("listenUsingRfcommOn", new Class[]{int.class});
tmp = ( BluetoothServerSocket) listenMethod.invoke(mAdapter, 29);
} catch (NoSuchMethodException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InvocationTargetException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mmServerSocket = tmp;
}

public void run() {
if (D) Log.d(TAG, "BEGIN mAcceptThread" + this);
setName("AcceptThread");
BluetoothSocket socket = null;

// Listen to the server socket if we're not connected
while (mState != STATE_CONNECTED) {
try {
// This is a blocking call and will only return on a
// successful connection or an exception
socket = mmServerSocket.accept();
} catch (IOException e) {
Log.e("sxd", "---> accept socket failed <---" , e);
break;
}

// If a connection was accepted
if (socket != null) {
synchronized (BluetoothChatService.this) {
switch (mState) {
case STATE_LISTEN:
case STATE_CONNECTING:
// Situation normal. Start the connected thread.
connected(socket, socket.getRemoteDevice());
break;
case STATE_NONE:
case STATE_CONNECTED:
// Either not ready or already connected. Terminate new socket.
try {
socket.close();
} catch (IOException e) {
Log.e(TAG, "Could not close unwanted socket", e);
}
break;
}
}
}
}
if (D) Log.i(TAG, "END mAcceptThread");
}

public void cancel() {
if (D) Log.d(TAG, "cancel " + this);
try {
mmServerSocket.close();
} catch (IOException e) {
Log.e(TAG, "close() of server failed", e);
}
}
}

/**
* This thread runs while attempting to make an outgoing connection
* with a device. It runs straight through; the connection either
* succeeds or fails.
*/
private class ConnectThread extends Thread {
private final BluetoothSocket mmSocket;
private final BluetoothDevice mmDevice;

public ConnectThread(BluetoothDevice device) {
mmDevice = device;
BluetoothSocket tmp = null;

// Get a BluetoothSocket for a connection with the
// given BluetoothDevice
try {
Method m = mmDevice.getClass().getMethod("createRfcommSocket", new Class[] {int.class});
tmp = (BluetoothSocket) m.invoke(mmDevice, 29);
//                tmp = device.createRfcommSocketToServiceRecord(MY_UUID);
}catch (NoSuchMethodException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InvocationTargetException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mmSocket = tmp;
}

public void run() {
Log.i(TAG, "BEGIN mConnectThread");
setName("ConnectThread");

// Always cancel discovery because it will slow down a connection
mAdapter.cancelDiscovery();

// Make a connection to the BluetoothSocket
try {
// This is a blocking call and will only return on a
// successful connection or an exception
mmSocket.connect();
} catch (IOException e) {
Log.e("sxd", "connect IOException",e);
connectionFailed();
// Close the socket
try {
mmSocket.close();
} catch (IOException e2) {
Log.e(TAG, "unable to close() socket during connection failure", e2);
}
// Start the service over to restart listening mode
BluetoothChatService.this.start();
return;
}

// Reset the ConnectThread because we're done
synchronized (BluetoothChatService.this) {
mConnectThread = null;
}

// Start the connected thread
connected(mmSocket, mmDevice);
}

public void cancel() {
try {
mmSocket.close();
} catch (IOException e) {
Log.e(TAG, "close() of connect socket failed", e);
}
}
}

/**
* This thread runs during a connection with a remote device.
* It handles all incoming and outgoing transmissions.
*
* ���Ѿ��������ӵ����ý�����ݵĴ���
*/
private class ConnectedThread extends Thread {
private final BluetoothSocket mmSocket;
private final InputStream mmInStream;
private final OutputStream mmOutStream;

public ConnectedThread(BluetoothSocket socket) {
Log.d(TAG, "create ConnectedThread");
mmSocket = socket;
InputStream tmpIn = null;
OutputStream tmpOut = null;

// Get the BluetoothSocket input and output streams
try {
tmpIn = socket.getInputStream();
tmpOut = socket.getOutputStream();
} catch (IOException e) {
Log.e(TAG, "temp sockets not created", e);
}

mmInStream = tmpIn;
mmOutStream = tmpOut;
}

public void run() {
Log.i(TAG, "BEGIN mConnectedThread");
byte[] buffer = new byte[1024];
int bytes;

// Keep listening to the InputStream while connected
while (true) {
try {
// Read from the InputStream
bytes = mmInStream.read(buffer);

// Send the obtained bytes to the UI Activity
mHandler.obtainMessage(BluetoothChat.MESSAGE_READ, bytes, -1, buffer)
.sendToTarget();
} catch (IOException e) {
Log.e(TAG, "disconnected", e);
connectionLost();
break;
}
}
}

/**
* Write to the connected OutStream.
* @param buffer  The bytes to write
*/
public void write(byte[] buffer) {
try {
mmOutStream.write(buffer);

// Share the sent message back to the UI Activity
mHandler.obtainMessage(BluetoothChat.MESSAGE_WRITE, -1, -1, buffer)
.sendToTarget();
} catch (IOException e) {
Log.e(TAG, "Exception during write", e);
}
}

public void cancel() {
try {
mmSocket.close();
} catch (IOException e) {
Log.e(TAG, "close() of connect socket failed", e);
}
}
}
}

<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>