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Android系統(tǒng)中的藍(lán)牙連接程序編寫(xiě)實(shí)例教程

 更新時(shí)間：2016年04月29日 15:43:27   作者：zhoulc  
這篇文章主要介紹了Android系統(tǒng)中的藍(lán)牙連接程序編寫(xiě)實(shí)例教程,包括藍(lán)牙的設(shè)備查找及自動(dòng)配對(duì)等各種基礎(chǔ)功能的實(shí)現(xiàn),十分給力,需要的朋友可以參考下

Bluetooth結(jié)構(gòu)
1、JAVA層
frameworks/base/core/java/android/bluetooth/
包含了bluetooth的JAVA類(lèi)。
2、JNI層
frameworks/base/core/jni/android_bluetooth_開(kāi)頭的文件
定義了bluez通過(guò)JNI到上層的接口。
frameworks/base/core/jni/android_server_bluetoothservice.cpp
調(diào)用硬件適配層的接口system/bluetooth/bluedroid/bluetooth.c
3、bluez庫(kù)
external/bluez/
這是bluez用戶(hù)空間的庫(kù)，開(kāi)源的bluetooth代碼，包括很多協(xié)議，生成libbluetooth.so。
4、硬件適配層
system/bluetooth/bluedroid/bluetooth.c
包含了對(duì)硬件操作的接口
system/bluetooth/data/*
一些配置文件，復(fù)制到/etc/bluetooth/。
還有其他一些測(cè)試代碼和工具。


簡(jiǎn)略介紹Bluetooth開(kāi)發(fā)使用到的類(lèi)

1、BluetoothAdapter，藍(lán)牙適配器，可判斷藍(lán)牙設(shè)備是否可用等功能。
常用方法列舉如下：
    cancelDiscovery() ，取消搜索過(guò)程，在進(jìn)行藍(lán)牙設(shè)備搜索時(shí)，如果調(diào)用該方法會(huì)停止搜索。（搜索過(guò)程會(huì)持續(xù)12秒）
    disable()關(guān)閉藍(lán)牙，也就是我們常說(shuō)的禁用藍(lán)牙。
    enable()打開(kāi)藍(lán)牙，這個(gè)方法打開(kāi)藍(lán)牙但不會(huì)彈出提示，正常流程操作下，我們會(huì)讓系統(tǒng)提示用戶(hù)是否打開(kāi)藍(lán)牙設(shè)備。如下兩行代碼可輕松搞定。

    Intent enabler=new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
    startActivityForResult(enabler,reCode);//同startActivity(enabler);（在主Activity啟動(dòng)一個(gè)二級(jí)Activity,reCode一般等于3，一定記得要在AndroidManifest.xml里面添加藍(lán)牙權(quán)限）
    getAddress()獲取本地藍(lán)牙地址
    getDefaultAdapter()獲取默認(rèn)BluetoothAdapter，實(shí)際上，也只有這一種方法獲取BluetoothAdapter
    getName()獲取本地藍(lán)牙名稱(chēng)
    getRemoteDevice(String address)根據(jù)藍(lán)牙地址獲取遠(yuǎn)程藍(lán)牙設(shè)備
    getState()獲取本地藍(lán)牙適配器當(dāng)前狀態(tài)（感覺(jué)可能調(diào)試的時(shí)候更需要）
    isDiscovering()判斷當(dāng)前是否正在查找設(shè)備，是返回true
    isEnabled()判斷藍(lán)牙是否打開(kāi)，已打開(kāi)返回true，否則，返回false
    listenUsingRfcommWithServiceRecord(String name,UUID uuid)根據(jù)名稱(chēng)，UUID創(chuàng)建并返回   
    BluetoothServerSocket，這是創(chuàng)建BluetoothSocket服務(wù)器端的第一步
    startDiscovery()開(kāi)始搜索，這是搜索的第一步

 2.BluetoothDevice看名字就知道，這個(gè)類(lèi)描述了一個(gè)藍(lán)牙設(shè)備
    createRfcommSocketToServiceRecord(UUIDuuid)根據(jù)UUID創(chuàng)建并返回一個(gè)BluetoothSocket
    這個(gè)方法也是我們獲取BluetoothDevice的目的——?jiǎng)?chuàng)建BluetoothSocket
    這個(gè)類(lèi)其他的方法，如getAddress(),getName(),同BluetoothAdapter
    這個(gè)類(lèi)有幾個(gè)隱藏方法，涉及到藍(lán)牙的自動(dòng)配對(duì)，setPin,createBond,cancelPairingUserInput,等方法（需要通過(guò)java的反射，調(diào)用這幾個(gè)隱藏方法）

3.BluetoothServerSocket如果去除了Bluetooth相信大家一定再熟悉不過(guò)了，既然是Socket，方法就應(yīng)該都差不多，
    這個(gè)類(lèi)一種只有三個(gè)方法
    兩個(gè)重載的accept(),accept(inttimeout)兩者的區(qū)別在于后面的方法指定了過(guò)時(shí)時(shí)間，需要注意的是，執(zhí)行這兩個(gè)方法的時(shí)候，直到接收到了客戶(hù)端的請(qǐng)求（或是過(guò)期之后），都會(huì)阻塞線(xiàn)程，應(yīng)該放在新線(xiàn)程里運(yùn)行！
    還有一點(diǎn)需要注意的是，這兩個(gè)方法都返回一個(gè)BluetoothSocket，最后的連接也是服務(wù)器端與客戶(hù)端的兩個(gè)BluetoothSocket的連接
    close()關(guān)閉！

4.BluetoothSocket,跟BluetoothServerSocket相對(duì)，是客戶(hù)端
    一共5個(gè)方法，不出意外，都會(huì)用到
    close(),關(guān)閉
    connect()連接
    getInptuStream()獲取輸入流
    getOutputStream()獲取輸出流
    getRemoteDevice()獲取遠(yuǎn)程設(shè)備，這里指的是獲取bluetoothSocket指定連接的那個(gè)遠(yuǎn)程藍(lán)牙設(shè)備

二、藍(lán)牙設(shè)備的發(fā)現(xiàn)、查找。

1.基于安全性考慮，設(shè)置開(kāi)啟可被搜索后，Android系統(tǒng)會(huì)默認(rèn)給出120秒的時(shí)間，其他設(shè)備能在這120秒內(nèi)搜索到它。
    Intent enable = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
    startActivityForResult(enalbe,REQUEST_DISCOVERABLE);
2.搜索藍(lán)牙設(shè)備
    BluetoothAdapter _bluetooth = BluetoothAdapter.getDefaultAdapter();
    _bluetooth.startDiscovery();
3.關(guān)閉藍(lán)牙設(shè)備
    BluetoothAdapter _bluetooth = BluetoothAdapter.getDefaultAdapter();
    _bluetooth.disable();
4.創(chuàng)建藍(lán)牙客戶(hù)端
    BluetoothSocket socket = device.createRfcommSocketToServiceRecord(UUID.fromString(UUID號(hào)));
    socket.connect();
4.創(chuàng)建藍(lán)牙服務(wù)端
    BluetoothServerSocket _serverSocket = _bluetooth.listenUsingRfcommWithServiceRecord(服務(wù)端名稱(chēng),UUID.fromeString(UUID號(hào)));
    BluetoothSocket socket = _serverSocket.accept();
    InputStream inputStream = socket.getInputStream();


TCP/IP通信相關(guān)代碼實(shí)現(xiàn)
注：tcp_ip模塊需要在系統(tǒng)setting模塊中，完成藍(lán)牙的配對(duì)，只有配對(duì)成功的，才能進(jìn)行socket通信（具體如何配對(duì)和如何自動(dòng)配對(duì)，將在bluetoot3或者4中進(jìn)行講解）
AndridManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
 package="com.example.thecaseforbluetooth"
 android:versionCode="1"
 android:versionName="1.0" >
 
 <uses-sdk
  android:minSdkVersion="8"
  android:targetSdkVersion="15" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-permission android:name="android.permission.BLUETOOTH" />
 <application
  android:icon="@drawable/ic_launcher"
  android:label="@string/app_name"
  android:theme="@style/AppTheme" >
  <activity
   android:name=".BluetoothActivity"
   android:label="@string/title_activity_bluetooth" >
   <intent-filter>
    <action android:name="android.intent.action.MAIN" />
 
    <category android:name="android.intent.category.LAUNCHER" />
   </intent-filter>
  </activity>
 </application>
 
</manifest>

main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools"
 android:id="@+id/LinearLayout1"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:orientation="vertical" >
 <Button
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:id="@+id/btnSearch"
 android:text="查找設(shè)備"
/>
<Button
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:id="@+id/btnExit"
 android:text="退出應(yīng)用"
/>
<Button
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:id="@+id/btnDis"
 android:text="設(shè)置可被發(fā)現(xiàn)"
/>
<Button
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:id="@+id/btnserver"
 android:text="啟動(dòng)服務(wù)端"
/>
<ToggleButton
android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:id="@+id/tbtnSwitch"
 android:text="開(kāi)/關(guān) 藍(lán)牙設(shè)備"
/>
<ListView
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 android:id="@+id/lvDevices"
 
/>
</LinearLayout>

BluetoothActivity.java

package com.example.thecaseforbluetooth;
 
import java.util.ArrayList;
import java.util.Set;
 
import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Toast;
import android.widget.ToggleButton;
 
public class BluetoothActivity extends Activity {
 public Button searchBtn;//搜索藍(lán)牙設(shè)備
 public Button exitBtn;//退出應(yīng)用
 public Button discoverBtn;//設(shè)置可被發(fā)現(xiàn)
 public ToggleButton openBtn;//開(kāi)關(guān)藍(lán)牙設(shè)備
 public Button serverbtn;
 public ListView listView;//藍(lán)牙設(shè)備清單
 public ArrayAdapter<String> adapter;
 public ArrayList<String> list =new ArrayList<String>();
 private BluetoothAdapter bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
 Set<BluetoothDevice> bondDevices ;
 public Context context ;
 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  searchBtn = (Button)findViewById(R.id.btnSearch);
  exitBtn = (Button)findViewById(R.id.btnExit);
  discoverBtn = (Button)findViewById(R.id.btnDis);
  openBtn = (ToggleButton)findViewById(R.id.tbtnSwitch);
  serverbtn = (Button)findViewById(R.id.btnserver);
  listView = (ListView)findViewById(R.id.lvDevices);
  context = getApplicationContext();
  adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,list);
  listView.setAdapter(adapter);
  openBtn.setChecked(false);
  //注冊(cè)廣播接收信號(hào)
  IntentFilter intent = new IntentFilter(); 
  intent.addAction(BluetoothDevice.ACTION_FOUND);// 用BroadcastReceiver來(lái)取得搜索結(jié)果 
  intent.addAction(BluetoothAdapter.ACTION_SCAN_MODE_CHANGED); //每當(dāng)掃描模式變化的時(shí)候，應(yīng)用程序可以為通過(guò)ACTION_SCAN_MODE_CHANGED值來(lái)監(jiān)聽(tīng)全局的消息通知。比如，當(dāng)設(shè)備停止被搜尋以后，該消息可以被系統(tǒng)通知給應(yīng)用程序。
  intent.addAction(BluetoothAdapter.ACTION_STATE_CHANGED); //每當(dāng)藍(lán)牙模塊被打開(kāi)或者關(guān)閉，應(yīng)用程序可以為通過(guò)ACTION_STATE_CHANGED值來(lái)監(jiān)聽(tīng)全局的消息通知。
  registerReceiver(searchReceiver, intent); 
  //顯示已配對(duì)設(shè)備以及搜索未配對(duì)設(shè)備
  searchBtn.setOnClickListener(new OnClickListener() {
   @Override
   public void onClick(View v) {
    // TODO Auto-generated method stub
    if(bluetoothAdapter.isDiscovering()){
     bluetoothAdapter.cancelDiscovery();
    }
    list.clear();
    bondDevices = bluetoothAdapter.getBondedDevices();
     
    for(BluetoothDevice device : bondDevices) {
     String str = " 已配對(duì)完成 " + device.getName() +" "
     + device.getAddress(); 
     list.add(str);
     adapter.notifyDataSetChanged();
    }
    bluetoothAdapter.startDiscovery();
   }
  });
  //退出應(yīng)用
  exitBtn.setOnClickListener(new OnClickListener() {
    
   @Override
   public void onClick(View v) {
    // TODO Auto-generated method stub
    BluetoothActivity.this.finish();
   }
  });
  //設(shè)置藍(lán)牙設(shè)備可發(fā)現(xiàn)
  discoverBtn.setOnClickListener(new OnClickListener() {
    
   @Override
   public void onClick(View v) {
    // TODO Auto-generated method stub
    Intent discoverIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
    discoverIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);
    startActivity(discoverIntent);
   }
  });
  //開(kāi)關(guān)藍(lán)牙設(shè)備
  openBtn.setOnClickListener(new OnClickListener() {
    
   @Override
   public void onClick(View v) {
    // TODO Auto-generated method stub
    if(openBtn.isChecked() == true){
     bluetoothAdapter.disable();
    }
    else if(openBtn.isChecked() == false){
     bluetoothAdapter.enable();
    }
   }
  });
  //作為服務(wù)端開(kāi)啟
  serverbtn.setOnClickListener(new OnClickListener() {
    
   @Override
   public void onClick(View v) {
    // TODO Auto-generated method stub
    ServerThread serverThread = new ServerThread(bluetoothAdapter, context);
    Toast.makeText(context, "server 端啟動(dòng)", 5000).show();
    serverThread.start();
   }
  });
  listView.setOnItemClickListener(new ItemClickListener());
 }
 @Override
 public void onStart() {
  super.onStart();
  // If BT is not on, request that it be enabled.
  if(bluetoothAdapter == null){
   Toast.makeText(context, "藍(lán)牙設(shè)備不可用", 5000).show();
  }
   if (!bluetoothAdapter.isEnabled()) {
   Intent enableIntent = new Intent(
     BluetoothAdapter.ACTION_REQUEST_ENABLE);
   startActivityForResult(enableIntent, 3);
  }
   
 }
 @Override
 public boolean onCreateOptionsMenu(Menu menu) {
  getMenuInflater().inflate(R.menu.main, menu);
  return true;
 }
  
 private final BroadcastReceiver searchReceiver = new BroadcastReceiver() {
   
  @Override
  public void onReceive(Context context, Intent intent) {
   // TODO Auto-generated method stub
    String action = intent.getAction(); 
    BluetoothDevice device = null;
    if(BluetoothDevice.ACTION_FOUND.equals(action)){
     device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); 
     if (device.getBondState() == BluetoothDevice.BOND_NONE) { 
     Toast.makeText(context, device.getName()+"", 5000).show();
     String str = " 未配對(duì)完成 " + device.getName() +" "
     + device.getAddress(); 
     if (list.indexOf(str) == -1)// 防止重復(fù)添加 
      list.add(str); 
     }
     adapter.notifyDataSetChanged();
    }
    
  }
 };
  public class ItemClickListener implements OnItemClickListener {
 
  @Override
  public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
    long arg3) {
   // TODO Auto-generated method stub
    if(bluetoothAdapter.isDiscovering())
     bluetoothAdapter.cancelDiscovery(); 
    String str = list.get(arg2); 
    String address = str.substring(str.length() - 17); 
    BluetoothDevice btDev = bluetoothAdapter.getRemoteDevice(address); 
    ClientThread clientThread = new ClientThread(btDev, context);
    clientThread.start();
  }}
}

Bluetoothprotocol.java

package com.example.thecaseforbluetooth;
 
public interface Bluetoothprotocol {
 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";
}

ServerThread.java

package com.example.thecaseforbluetooth;
 
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.UUID;
 
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothServerSocket;
import android.bluetooth.BluetoothSocket;
import android.content.Context;
import android.os.Message;
import android.util.Log;
import android.widget.Toast;
 
public class ServerThread extends Thread {
 public BluetoothServerSocket mserverSocket;
 public BluetoothAdapter bluetoothAdapter;
 public BluetoothSocket socket;
 public Context context;
 public ServerThread(BluetoothAdapter bluetoothAdapter,Context context) {
  this.bluetoothAdapter = bluetoothAdapter;
  this.context = context;
 }
 
 public void run() {
   
  try {
   /* 創(chuàng)建一個(gè)藍(lán)牙服務(wù)器 
    * 參數(shù)分別：服務(wù)器名稱(chēng)、UUID */
   mserverSocket = bluetoothAdapter.listenUsingRfcommWithServiceRecord(Bluetoothprotocol.PROTOCOL_SCHEME_RFCOMM,
     UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"));  
//   /* 接受客戶(hù)端的連接請(qǐng)求 */
   socket = mserverSocket.accept();
   //下面代碼作者偷懶，讀寫(xiě)另外起一個(gè)線(xiàn)程最好
   //接收數(shù)據(jù)
    byte[] buffer = new byte[1024];
    int bytes;
    InputStream mmInStream = null;
     
    try {
     mmInStream = socket.getInputStream();
    } catch (IOException e1) {
     // TODO Auto-generated catch block
     e1.printStackTrace();
    } 
    System.out.println("zhoulc server");
    while(true){
      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);
       System.out.println(s+"zhoulc server is in");
    } 
    }
  } catch (Exception e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
 
}
  
}

ClientThread.java

package com.example.thecaseforbluetooth;
 
import java.io.IOException;
import java.io.OutputStream;
import java.util.UUID;
 
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
import android.content.Context;
import android.widget.Toast;
 
public class ClientThread extends Thread {
 public BluetoothSocket socket;
 public BluetoothDevice device;
 public Context context;
 public ClientThread(BluetoothDevice device,Context context){
  this.device = device;
  this.context = context;
 }
 public void run() {
  try {
   //創(chuàng)建一個(gè)Socket連接：只需要服務(wù)器在注冊(cè)時(shí)的UUID號(hào)
   socket = device.createRfcommSocketToServiceRecord(UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"));
   //連接
   socket.connect();
   //下面代碼作者偷懶，讀寫(xiě)另外起一個(gè)線(xiàn)程最好
   //發(fā)送數(shù)據(jù)
   if (socket == null) 
   {
    Toast.makeText(context, "鏈接失敗", 5000).show();
    return;
   }
   System.out.println("zhoulc client");
   while(true){
    try {
     System.out.println("zhoulc client is in");
     String msg = "hello everybody I am client";
     OutputStream os = socket.getOutputStream(); 
     os.write(msg.getBytes());
    } catch (IOException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    }   
   }
  } 
  catch (IOException e) 
  {
   e.printStackTrace();
  } 
 }
}

藍(lán)牙設(shè)備之間自動(dòng)配對(duì)
    1、藍(lán)牙設(shè)備之間自動(dòng)配對(duì)，需要兩個(gè)設(shè)備都安裝進(jìn)行配對(duì)的apk（網(wǎng)上好多自動(dòng)配對(duì)的帖子都沒(méi)有說(shuō)明情況）
    2、在自動(dòng)匹配的時(shí)候想通過(guò)反射調(diào)用BluetoothDevice的setPin、createBond、cancelPairingUserInput實(shí)現(xiàn)設(shè)置密鑰、配對(duì)請(qǐng)求創(chuàng)建、取消密鑰信息輸入等。
        1）createBond（）創(chuàng)建，最終會(huì)調(diào)到源碼的BluetoothService的createBond(String address)方法，通過(guò)對(duì)源碼淺顯的了解，createBond主要是寫(xiě)入匹配密鑰（BluetoothService的writeDockPin（））以及進(jìn)入jni注冊(cè)回調(diào)函數(shù)onCreatePairedDeviceResult觀察匹配結(jié)果
比如：    // Pins did not match, or remote device did not respond to pin
            // request in time
            // We rejected pairing, or the remote side rejected pairing. This
            // happens if either side presses 'cancel' at the pairing dialog.
            // Not sure if this happens
            // Other device is not responding at all
            // already bonded
等，在jni中創(chuàng)建了進(jìn)行匹配的device（"CreatePairedDevice"），這時(shí)bluetooth會(huì)發(fā)送一個(gè)ACTION_PAIRING_REQUEST的廣播，只有當(dāng)前會(huì)出現(xiàn)密鑰框的藍(lán)牙設(shè)備收到。寫(xiě)完密鑰之后，發(fā)送廣播給另外一個(gè)藍(lán)牙設(shè)備接收，然后打開(kāi)密鑰輸入框進(jìn)行匹配。
        2）setPin()設(shè)置密鑰，通過(guò)查看setting源碼，發(fā)現(xiàn)在確認(rèn)輸入密鑰之后會(huì)調(diào)用setPin()（如果點(diǎn)取消，就會(huì)調(diào)用cancelPairingUserInput，取消密鑰框），setPin具體通過(guò)D-BUS做了什么沒(méi)有去深究，但是在調(diào)用setPin的時(shí)候會(huì)remove掉一個(gè)map里面的鍵值對(duì)（address：int），也就是我們?cè)谡{(diào)用setPin之后如果再去調(diào)用onCreatePairedDeviceResult，則該方法一定返回false，并且出現(xiàn)下面的打印提示：cancelUserInputNative(B8:FF:FE:55:EF:D6) called but no native data available, ignoring. Maybe the PasskeyAgent Request was already cancelled by the remote or by bluez.（因?yàn)樵摲椒ㄒ矔?huì)remove掉一個(gè)鍵值對(duì)）
        3）cancelPairingUserInput（）取消用戶(hù)輸入密鑰框，個(gè)人覺(jué)得一般情況下不要和setPin（setPasskey、setPairingConfirmation、setRemoteOutOfBandData）一起用，這幾個(gè)方法都會(huì)remove掉map里面的key:value（也就是互斥的）。

    3、藍(lán)牙耳機(jī)、手柄等一些無(wú)法手動(dòng)配置的設(shè)備是如何完成自動(dòng)配對(duì)的。
    在源碼里面有一個(gè)自動(dòng)配對(duì)的方法，也就是把pin值自動(dòng)設(shè)為“0000”

/*package*/ synchronized boolean attemptAutoPair(String address) {
        if (!mBondState.hasAutoPairingFailed(address) &&
                !mBondState.isAutoPairingBlacklisted(address)) {
            mBondState.attempt(address);
            setPin(address, BluetoothDevice.convertPinToBytes("0000"));
            return true;
        }
        return false;
    }
該方法是在底層回調(diào)到j(luò)ava層的onRequestPinCode方法時(shí)被調(diào)用，首先 Check if its a dock（正常輸入的密鑰,走正常配對(duì)方式，雙方輸入匹配值），然后再 try 0000 once if the device looks dumb（涉及到Device.AUDIO_VIDEO相關(guān)部分如：耳機(jī)，免提等進(jìn)入自動(dòng)匹配模式）進(jìn)行自動(dòng)配對(duì)。


言歸正傳，雖然個(gè)人覺(jué)得自動(dòng)配對(duì)需要雙方乃至多方藍(lán)牙設(shè)備都需要裝上實(shí)現(xiàn)自動(dòng)配對(duì)的apk，已經(jīng)失去了自動(dòng)配對(duì)的意義，但有可能還是會(huì)派上用場(chǎng)。下面我們看看現(xiàn)實(shí)情況的自動(dòng)配對(duì)是什么樣的吧。

由于BluetoothDevice配對(duì)的方法都是hide的，所以我們需要通過(guò)反射調(diào)用被隱藏的方法，現(xiàn)在基本都是通用的工具類(lèi)型了，網(wǎng)上模式基本一樣。
ClsUtils.java

package cn.bluetooth;
 
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.util.Log;
public class ClsUtils 
{ 
 public static BluetoothDevice remoteDevice=null;
  /** 
  * 與設(shè)備配對(duì) 參考源碼：platform/packages/apps/Settings.git 
  * /Settings/src/com/android/settings/bluetooth/CachedBluetoothDevice.java 
  */
  @SuppressWarnings("unchecked")
 static public boolean createBond(@SuppressWarnings("rawtypes") Class btClass, BluetoothDevice btDevice) 
    throws Exception 
  { 
   Method createBondMethod = btClass.getMethod("createBond"); 
   Boolean returnValue = (Boolean) createBondMethod.invoke(btDevice); 
   return returnValue.booleanValue(); 
  } 
 
  /** 
  * 與設(shè)備解除配對(duì) 參考源碼：platform/packages/apps/Settings.git 
  * /Settings/src/com/android/settings/bluetooth/CachedBluetoothDevice.java 
  */
  @SuppressWarnings("unchecked")
 static public boolean removeBond(Class btClass, BluetoothDevice btDevice) 
    throws Exception 
  { 
   Method removeBondMethod = btClass.getMethod("removeBond"); 
   Boolean returnValue = (Boolean) removeBondMethod.invoke(btDevice); 
   return returnValue.booleanValue(); 
  } 
 
  @SuppressWarnings("unchecked")
 static public boolean setPin(Class btClass, BluetoothDevice btDevice, 
    String str) throws Exception 
  { 
   try
   { 
    Method removeBondMethod = btClass.getDeclaredMethod("setPin", 
      new Class[] 
      {byte[].class}); 
    Boolean returnValue = (Boolean) removeBondMethod.invoke(btDevice, 
      new Object[] 
      {str.getBytes()}); 
    Log.d("returnValue", "setPin is success " +btDevice.getAddress()+ returnValue.booleanValue());
   } 
   catch (SecurityException e) 
   { 
    // throw new RuntimeException(e.getMessage()); 
    e.printStackTrace(); 
   } 
   catch (IllegalArgumentException e) 
   { 
    // throw new RuntimeException(e.getMessage()); 
    e.printStackTrace(); 
   } 
   catch (Exception e) 
   { 
    // TODO Auto-generated catch block 
    e.printStackTrace(); 
   } 
   return true; 
 
  } 
 
  // 取消用戶(hù)輸入 
  @SuppressWarnings("unchecked")
 static public boolean cancelPairingUserInput(Class btClass, 
    BluetoothDevice device) 
 
  throws Exception 
  { 
   Method createBondMethod = btClass.getMethod("cancelPairingUserInput"); 
   // cancelBondProcess() 
   Boolean returnValue = (Boolean) createBondMethod.invoke(device); 
   Log.d("returnValue", "cancelPairingUserInput is success " + returnValue.booleanValue());
   return returnValue.booleanValue(); 
  } 
 
  // 取消配對(duì) 
  @SuppressWarnings("unchecked")
 static public boolean cancelBondProcess(Class btClass, 
    BluetoothDevice device) 
 
  throws Exception 
  { 
   Method createBondMethod = btClass.getMethod("cancelBondProcess"); 
   Boolean returnValue = (Boolean) createBondMethod.invoke(device); 
   return returnValue.booleanValue(); 
  } 
 
  /** 
  * 
  * @param clsShow 
  */
  @SuppressWarnings("unchecked")
 static public void printAllInform(Class clsShow) 
  { 
   try
   { 
    // 取得所有方法 
    Method[] hideMethod = clsShow.getMethods(); 
    int i = 0; 
    for (; i < hideMethod.length; i++) 
    { 
     //Log.e("method name", hideMethod.getName() + ";and the i is:"
     //  + i); 
    } 
    // 取得所有常量 
    Field[] allFields = clsShow.getFields(); 
    for (i = 0; i < allFields.length; i++) 
    { 
     //Log.e("Field name", allFields.getName()); 
    } 
   } 
   catch (SecurityException e) 
   { 
    // throw new RuntimeException(e.getMessage()); 
    e.printStackTrace(); 
   } 
   catch (IllegalArgumentException e) 
   { 
    // throw new RuntimeException(e.getMessage()); 
    e.printStackTrace(); 
   } 
   catch (Exception e) 
   { 
    // TODO Auto-generated catch block 
    e.printStackTrace(); 
   } 
  } 
}

Bluetooth1.java 主activity，所有界面操作實(shí)現(xiàn)地方

package cn.bluetooth;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
 
import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Toast;
import android.widget.ToggleButton;
public class Bluetooth1 extends Activity {
 /** Called when the activity is first created. */
  Button btnSearch, btnDis, btnExit; 
  ToggleButton tbtnSwitch; 
  ListView lvBTDevices; 
  ArrayAdapter<String> adtDevices; 
  List<String> lstDevices = new ArrayList<String>(); 
  BluetoothAdapter btAdapt; 
  public static BluetoothSocket btSocket; 
  @Override
  public void onCreate(Bundle savedInstanceState) { 
   super.onCreate(savedInstanceState); 
   setContentView(R.layout.main); 
   // Button 設(shè)置 
   btnSearch = (Button) this.findViewById(R.id.btnSearch); 
   btnSearch.setOnClickListener(new ClickEvent()); 
   btnExit = (Button) this.findViewById(R.id.btnExit); 
   btnExit.setOnClickListener(new ClickEvent()); 
   btnDis = (Button) this.findViewById(R.id.btnDis); 
   btnDis.setOnClickListener(new ClickEvent()); 
 
   // ToogleButton設(shè)置 
   tbtnSwitch = (ToggleButton) this.findViewById(R.id.tbtnSwitch); 
   tbtnSwitch.setOnClickListener(new ClickEvent()); 
 
   // ListView及其數(shù)據(jù)源 適配器 
   lvBTDevices = (ListView) this.findViewById(R.id.lvDevices); 
   adtDevices = new ArrayAdapter<String>(this, 
     android.R.layout.simple_list_item_1, lstDevices); 
   lvBTDevices.setAdapter(adtDevices); 
   lvBTDevices.setOnItemClickListener(new ItemClickEvent()); 
 
   btAdapt = BluetoothAdapter.getDefaultAdapter();// 初始化本機(jī)藍(lán)牙功能 
 
   // ======================================================== 
   // modified by wiley 
   /*
   * if (btAdapt.getState() == BluetoothAdapter.STATE_OFF)// 讀取藍(lán)牙狀態(tài)并顯示
   * tbtnSwitch.setChecked(false); else if (btAdapt.getState() ==
   * BluetoothAdapter.STATE_ON) tbtnSwitch.setChecked(true);
   */
   if (btAdapt.isEnabled()) { 
    tbtnSwitch.setChecked(false); 
   } else { 
    tbtnSwitch.setChecked(true); 
   } 
   // ============================================================ 
   // 注冊(cè)Receiver來(lái)獲取藍(lán)牙設(shè)備相關(guān)的結(jié)果 
   IntentFilter intent = new IntentFilter(); 
   intent.addAction(BluetoothDevice.ACTION_FOUND);// 用BroadcastReceiver來(lái)取得搜索結(jié)果 
   intent.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED); 
   intent.addAction(BluetoothAdapter.ACTION_SCAN_MODE_CHANGED); 
   intent.addAction(BluetoothAdapter.ACTION_STATE_CHANGED); 
   registerReceiver(searchDevices, intent); 
  } 
 
  private final BroadcastReceiver searchDevices = new BroadcastReceiver() { 
   @Override
 public void onReceive(Context context, Intent intent) {  
   
    String action = intent.getAction(); 
    Bundle b = intent.getExtras(); 
    Object[] lstName = b.keySet().toArray(); 
 
    // 顯示所有收到的消息及其細(xì)節(jié) 
    for (int i = 0; i < lstName.length; i++) { 
     String keyName = lstName.toString(); 
     Log.e(keyName, String.valueOf(b.get(keyName))); 
    } 
    BluetoothDevice device = null; 
    // 搜索設(shè)備時(shí)，取得設(shè)備的MAC地址 
    if (BluetoothDevice.ACTION_FOUND.equals(action)) { 
     device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); 
     if (device.getBondState() == BluetoothDevice.BOND_NONE) { 
      String str = "   未配對(duì)|" + device.getName() + "|"
        + device.getAddress(); 
      if (lstDevices.indexOf(str) == -1)// 防止重復(fù)添加 
       lstDevices.add(str); // 獲取設(shè)備名稱(chēng)和mac地址 
      adtDevices.notifyDataSetChanged(); 
     } 
    }else if(BluetoothDevice.ACTION_BOND_STATE_CHANGED.equals(action)){ 
     device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); 
     
     switch (device.getBondState()) { 
     case BluetoothDevice.BOND_BONDING: 
      Log.d("BlueToothTestActivity", "正在配對(duì)......"); 
      break; 
     case BluetoothDevice.BOND_BONDED: 
      Log.d("BlueToothTestActivity", "完成配對(duì)"); 
      //connect(device);//連接設(shè)備 
      break; 
     case BluetoothDevice.BOND_NONE: 
      Log.d("BlueToothTestActivity", "取消配對(duì)"); 
     default: 
      break; 
     } 
    } 
    
   } 
  }; 
 
  @Override
  protected void onDestroy() { 
   this.unregisterReceiver(searchDevices); 
   super.onDestroy(); 
   android.os.Process.killProcess(android.os.Process.myPid()); 
  } 
 
  class ItemClickEvent implements AdapterView.OnItemClickListener { 
 
   @Override
   public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, 
     long arg3) { 
    if(btAdapt.isDiscovering())btAdapt.cancelDiscovery(); 
    String str = lstDevices.get(arg2); 
    String[] values = str.split("\\|"); 
    String address = values[2]; 
    Log.e("address", values[2]);    
    BluetoothDevice btDev = btAdapt.getRemoteDevice(address); 
    try { 
     Boolean returnValue = false; 
     if (btDev.getBondState() == BluetoothDevice.BOND_NONE) { 
      Toast.makeText(Bluetooth1.this, "遠(yuǎn)程設(shè)備發(fā)送藍(lán)牙配對(duì)請(qǐng)求", 5000).show(); 
      //這里只需要createBond就行了
     ClsUtils.createBond(btDev.getClass(), btDev); 
     }else if(btDev.getBondState() == BluetoothDevice.BOND_BONDED){ 
      Toast.makeText(Bluetooth1.this, btDev.getBondState()+" ....正在連接..", 1000).show(); 
     } 
    } catch (Exception e) { 
     e.printStackTrace(); 
    } 
   } 
  } 
  class ClickEvent implements View.OnClickListener { 
   @Override
   public void onClick(View v) { 
    if (v == btnSearch)// 搜索藍(lán)牙設(shè)備，在BroadcastReceiver顯示結(jié)果 
    { 
     if (btAdapt.getState() == BluetoothAdapter.STATE_OFF) {// 如果藍(lán)牙還沒(méi)開(kāi)啟 
      Toast.makeText(Bluetooth1.this, "請(qǐng)先打開(kāi)藍(lán)牙", 1000) 
        .show(); 
      return; 
     } 
     if (btAdapt.isDiscovering()) 
      btAdapt.cancelDiscovery(); 
     lstDevices.clear(); 
     Object[] lstDevice = btAdapt.getBondedDevices().toArray(); 
     for (int i = 0; i < lstDevice.length; i++) { 
      BluetoothDevice device = (BluetoothDevice) lstDevice[i]; 
      String str = " 已配對(duì)|" + device.getName() + "|"
        + device.getAddress(); 
      lstDevices.add(str); // 獲取設(shè)備名稱(chēng)和mac地址 
      adtDevices.notifyDataSetChanged(); 
     } 
     setTitle("本機(jī)：" + btAdapt.getAddress()); 
     btAdapt.startDiscovery(); 
    } else if (v == tbtnSwitch) {// 本機(jī)藍(lán)牙啟動(dòng)/關(guān)閉 
     if (tbtnSwitch.isChecked() == false) 
      btAdapt.enable(); 
 
     else if (tbtnSwitch.isChecked() == true) 
      btAdapt.disable(); 
     
    } else if (v == btnDis)// 本機(jī)可以被搜索 
    { 
     Intent discoverableIntent = new Intent( 
       BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE); 
     discoverableIntent.putExtra( 
       BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300); 
     startActivity(discoverableIntent); 
    } else if (v == btnExit) { 
     try { 
      if (btSocket != null) 
       btSocket.close(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 
     Bluetooth1.this.finish(); 
    } 
   } 
  } 
 @Override
 public boolean onCreateOptionsMenu(Menu menu) {
  getMenuInflater().inflate(R.menu.main, menu);
  return true;
 }
 
  
}

PairingRequest.java （重要部分，自動(dòng)配對(duì)主要是這個(gè)部分完成，activity只是創(chuàng)建了一個(gè)配對(duì)請(qǐng)求）

package cn.bluetooth;
 
import android.bluetooth.BluetoothDevice;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;
 
public class PairingRequest extends BroadcastReceiver {
 String strPsw = "0000";
 final String ACTION_PAIRING_REQUEST = "android.bluetooth.device.action.PAIRING_REQUEST";
 static BluetoothDevice remoteDevice = null;
 
 @Override
 public void onReceive(Context context, Intent intent) {
  if (intent.getAction().equals(ACTION_PAIRING_REQUEST)) {
 
   BluetoothDevice device = intent
     .getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
   if (device.getBondState() != BluetoothDevice.BOND_BONDED) {
    try {
     ClsUtils.setPin(device.getClass(), device, strPsw); // 手機(jī)和藍(lán)牙采集器配對(duì)
     // ClsUtils.cancelPairingUserInput(device.getClass(),
     // device); //一般調(diào)用不成功，前言里面講解過(guò)了
     Toast.makeText(context, "配對(duì)信息" + device.getName(), 5000)
       .show();
    } catch (Exception e) {
     // TODO Auto-generated catch block
     Toast.makeText(context, "請(qǐng)求連接錯(cuò)誤...", 1000).show();
    }
   }
   // */
   // pair(device.getAddress(),strPsw);
  }
 }
}

AndroidManifest.xml 啟動(dòng)activity，接收廣播

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
 package="cn.bluetooth"
 android:versionCode="1"
 android:versionName="1.0" >
 <uses-sdk
  android:minSdkVersion="8"
  android:targetSdkVersion="15" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-permission android:name="android.permission.BLUETOOTH" />
 <application
  android:icon="@drawable/ic_launcher"
  android:label="@string/app_name"
  android:theme="@style/AppTheme" >
  <activity
   android:name=".Bluetooth1"
   android:label="@string/title_activity_bluetooth1" >
   <intent-filter>
    <action android:name="android.intent.action.MAIN" />
    <category android:name="android.intent.category.LAUNCHER" />
   </intent-filter>
  </activity>
  <receiver android:name=".PairingRequest">
     <intent-filter>
     <action android:name="android.bluetooth.device.action.PAIRING_REQUEST" /> 
     </intent-filter>
    </receiver>
   
 </application>
</manifest>

main.xml 布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools"
 android:id="@+id/LinearLayout1"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:orientation="vertical" >
 <Button
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:id="@+id/btnSearch"
 android:text="btnSearch"
/>
<Button
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:id="@+id/btnExit"
 android:text="btnExit"
/>
<Button
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:id="@+id/btnDis"
 android:text="btnDis"
/>
<ToggleButton
android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:id="@+id/tbtnSwitch"
 android:text="tbtnSwitch"
/>
<ListView
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 android:id="@+id/lvDevices"
 
/>
</LinearLayout>

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