Android与蓝牙串口模块通信(android蓝牙连接过程)

推荐整理分享Android与蓝牙串口模块通信(android蓝牙连接过程)，希望有所帮助，仅作参考，欢迎阅读内容。

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1.蓝牙串口模块使用SPP-CA模块

蓝牙串口模块就是使用单片机的TX ,RX与蓝牙模块通信，单片机通过TX发送数据给蓝牙模块，然后蓝牙模块在通过蓝牙协议把数据发送出去，蓝牙模块与Android的通信方式使用spp协议。

2.蓝牙通信

蓝牙的通信需要服务端和客户端，客户端搜索蓝牙设备，链接服务端。主要是通过socket通信，相关的知识可以学习了解下socket通信。链接建立起来，通信时数据的读写是通过输入输出流的方式读写。

3.Android蓝牙架构和api说明

查看《Android系统原理及开发要点详解》和《深入理解Android网络编程》里的蓝牙相关章节，2本书里相关的章节有详细的介绍。

4.uuid

Hint: If you are connecting to a Bluetooth serial board then try using the well-known SPP UUID ----F9BFB. However if you are connecting to an Android peer then please generate your own unique UUID.

这是Android官方文档的说明，如果是连接蓝牙串口模块使用通用的uuid ----F9BFB，如果是Android手机间的通信链接，可以使用生成的uuid，客服端和服务端的uuid必须相同，下面通过蓝牙串口助手读取回来的uuid，下面是我的蓝牙串口模块的uuid。

下面是读取手机的蓝牙的uuid，可以看到比较多的uuid，有比较多的服务。

另外下面是其他蓝牙设备的uuid，应该是蓝牙4.0的。

代码部分还是比较简单的，下面是android蓝牙链接的主要部分代码，也是参考网上的。

package gjz.bluetooth;

import gjz.bluetooth.R;import gjz.bluetooth.Bluetooth.ServerOrCilent;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.util.ArrayList;import java.util.UUID;import android.app.Activity;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;import android.view.View;import android.view.View.OnClickListener;import android.view.inputmethod.InputMethodManager;import android.widget.AdapterView;import android.widget.Button;import android.widget.EditText;import android.widget.ListView;import android.widget.Toast;import android.widget.AdapterView.OnItemClickListener;

public class chatActivity extends Activity implements OnItemClickListener ,OnClickListener{ /** Called when the activity is first created. */ private ListView mListView; private ArrayList<deviceListItem>list; private Button sendButton; private Button disconnectButton; private EditText editMsgView; deviceListAdapter mAdapter; Context mContext; /* 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; private clientThread clientConnectThread = null; private BluetoothSocket socket = null; private BluetoothDevice device = null; private readThread mreadThread = null;; private BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.chat); mContext = this; init(); } private void init() { list = new ArrayList<deviceListItem>(); mAdapter = new deviceListAdapter(this, list); mListView = (ListView) findViewById(R.id.list); mListView.setAdapter(mAdapter); mListView.setOnItemClickListener(this); mListView.setFastScrollEnabled(true); editMsgView= (EditText)findViewById(R.id.MessageText); editMsgView.clearFocus(); sendButton= (Button)findViewById(R.id.btn_msg_send); sendButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { // TODO Auto-generated method stub String msgText =editMsgView.getText().toString(); if (msgText.length()>0) { sendMessageHandle(msgText); editMsgView.setText(""); editMsgView.clearFocus(); //close InputMethodManager InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE); imm.hideSoftInputFromWindow(editMsgView.getWindowToken(), 0); }else Toast.makeText(mContext, "发送内容不能为空！", Toast.LENGTH_SHORT).show(); } }); disconnectButton= (Button)findViewById(R.id.btn_disconnect); disconnectButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { // TODO Auto-generated method stub if (Bluetooth.serviceOrCilent == ServerOrCilent.CILENT) { shutdownClient(); } else if (Bluetooth.serviceOrCilent == ServerOrCilent.SERVICE) { shutdownServer(); } Bluetooth.isOpen = false; Bluetooth.serviceOrCilent=ServerOrCilent.NONE; Toast.makeText(mContext, "已断开连接！", Toast.LENGTH_SHORT).show(); } }); }

private Handler LinkDetectedHandler = new Handler() { @Override public void handleMessage(Message msg) { //Toast.makeText(mContext, (String)msg.obj, Toast.LENGTH_SHORT).show(); if(msg.what==1) { list.add(new deviceListItem((String)msg.obj, true)); } else { list.add(new deviceListItem((String)msg.obj, false)); } mAdapter.notifyDataSetChanged(); mListView.setSelection(list.size() - 1); } }; @Override public synchronized void onPause() { super.onPause(); } @Override public synchronized void onResume() { super.onResume(); if(Bluetooth.isOpen) { Toast.makeText(mContext, "连接已经打开，可以通信。如果要再建立连接，请先断开！", Toast.LENGTH_SHORT).show(); return; } if(Bluetooth.serviceOrCilent==ServerOrCilent.CILENT) { String address = Bluetooth.BlueToothAddress; if(!address.equals("null")) { device = mBluetoothAdapter.getRemoteDevice(address); clientConnectThread = new clientThread(); clientConnectThread.start(); Bluetooth.isOpen = true; } else { Toast.makeText(mContext, "address is null !", Toast.LENGTH_SHORT).show(); } } else if(Bluetooth.serviceOrCilent==ServerOrCilent.SERVICE) { startServerThread = new ServerThread(); startServerThread.start(); Bluetooth.isOpen = true; } } //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("----F9BFB")); //连接 Message msg2 = new Message(); msg2.obj = "请稍候，正在连接服务器:"&#;Bluetooth.BlueToothAddress; msg2.what = 0; LinkDetectedHandler.sendMessage(msg2); socket.connect(); Message msg = new Message(); msg.obj = "已经连接上服务端！可以发送信息。"; msg.what = 0; LinkDetectedHandler.sendMessage(msg); //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); } } };

//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("----F9BFB")); Log.d("server", "wait cilent connect..."); Message msg = new Message(); msg.obj = "请稍候，正在等待客户端的连接..."; msg.what = 0; LinkDetectedHandler.sendMessage(msg); /* 接受客户端的连接请求 */ socket = mserverSocket.accept(); Log.d("server", "accept success !"); Message msg2 = new Message(); String info = "客户端已经连接上！可以发送信息。"; msg2.obj = info; msg.what = 0; LinkDetectedHandler.sendMessage(msg2); //启动接受数据 mreadThread = new readThread(); mreadThread.start(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }; /* 停止服务器 */ private void shutdownServer() { new Thread() { public void run() { if(startServerThread != null) { startServerThread.interrupt(); startServerThread = null; } if(mreadThread != null) { mreadThread.interrupt(); mreadThread = null; } try { if(socket != null) { socket.close(); socket = null; } if (mserverSocket != null) { mserverSocket.close();/* 关闭服务器 */ mserverSocket = null; } } catch (IOException e) { Log.e("server", "mserverSocket.close()", e); } }; }.start(); } /* 停止客户端连接 */ private void shutdownClient() { new Thread() { public void run() { if(clientConnectThread!=null) { clientConnectThread.interrupt(); clientConnectThread= null; } if(mreadThread != null) { mreadThread.interrupt(); mreadThread = null; } if (socket != null) { try { socket.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } socket = null; } }; }.start(); } //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 block e.printStackTrace(); } list.add(new deviceListItem(msg, false)); mAdapter.notifyDataSetChanged(); mListView.setSelection(list.size() - 1); } //读取数据 private class readThread extends Thread { public void run() { byte[] buffer = new byte[]; int bytes; InputStream mmInStream = null; try { mmInStream = socket.getInputStream(); } catch (IOException e1) { // TODO Auto-generated catch block e1.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 block e1.printStackTrace(); } break; } } } } @Override protected void onDestroy() { super.onDestroy();

if (Bluetooth.serviceOrCilent == ServerOrCilent.CILENT) { shutdownClient(); } else if (Bluetooth.serviceOrCilent == ServerOrCilent.SERVICE) { shutdownServer(); } Bluetooth.isOpen = false; Bluetooth.serviceOrCilent = ServerOrCilent.NONE; } public class SiriListItem { String message; boolean isSiri;

public SiriListItem(String msg, boolean siri) { message = msg; isSiri = siri; } } @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { // TODO Auto-generated method stub } @Override public void onClick(View arg0) { // TODO Auto-generated method stub } public class deviceListItem { String message; boolean isSiri;

public deviceListItem(String msg, boolean siri) { message = msg; isSiri = siri; } }}

下面是实现的效果。

1.Android手机通信

一台手机作为服务端，等待客服端链接。

另一台手机作为客户端，链接服务端，链接成功，发送数据

2.Android和蓝牙模块的通信

蓝牙模块作为服务器端，Android手机作为客户端，链接蓝牙模块。

蓝牙模块通过串口线链接PC，通过串口工具接收Android手机端发送数据，Android手机端链接成功信息CONNECTING<<A0：E4：：：BB: CONNETED，链接成功发送信息hellokitty mina,Android链接断开信息DISC:SUCCESS &#;READY&#;PAIRABLE

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