安卓蓝牙通信

package com.example.bluetoothtest;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.io.OutputStreamWriter;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.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.view.View;import android.widget.Button;import android.widget.EditText;import android.widget.TextView;import android.widget.Toast;/***** @author 张章**/public class MainActivity extends Activity {TextView t1,t2,t3;EditText et;Button but,but2,but3,but4,but5,but6,but7,but8,but9;ArrayList<BluetoothDevice>deList=new ArrayList<BluetoothDevice>();//连接后获取输出流OutputStream outputStream;BluetoothAdapter bluetooth;String uuid="a60f35f0-b93a-11de-8a39-08002009c666";//服务端蓝牙设备的UUIDHandler handler=new Handler(){@Overridepublic void handleMessage(Message msg) {super.handleMessage(msg);if(msg.what==-1){Toast.makeText(getApplicationContext(), "等待用户连接。。。。", 1).show();}if(msg.what==-2){Toast.makeText(getApplicationContext(), "已与用户连接。。。。", 1).show();}if(msg.what==-3){Toast.makeText(getApplicationContext(), "等待服务端接受。。。。", 1).show();}if(msg.what==-4){Toast.makeText(getApplicationContext(), "服务端已接受。。。。", 1).show();}if(msg.what==1){Toast.makeText(getApplicationContext(), "接收"+(String)msg.obj, 1).show();}if(msg.what==2){Toast.makeText(getApplicationContext(), "发送 "+(String)msg.obj, 1).show();}}};@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);t1=(TextView) findViewById(R.id.t1);t2=(TextView) findViewById(R.id.t2);t3=(TextView) findViewById(R.id.t3);et=(EditText) findViewById(R.id.et);but=(Button) findViewById(R.id.but);but2=(Button) findViewById(R.id.but2);but3=(Button) findViewById(R.id.but3);but4=(Button) findViewById(R.id.but4);but5=(Button) findViewById(R.id.but5);but6=(Button) findViewById(R.id.but6);but7=(Button) findViewById(R.id.but7);but8=(Button) findViewById(R.id.but8);but9=(Button) findViewById(R.id.but9);//安卓手机可能有多个蓝牙适配器，眼下仅仅能使用默认蓝牙适配器，通过该方法能够获取到默认适配器bluetooth=BluetoothAdapter.getDefaultAdapter();//启用和禁用BluetoothAdapter是耗时的异步操作，需注冊Receiver监听状态变化registerReceiver(new MyReceiver(), new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED));//调用startDiscovery()方法能够开启设备扫描，注冊该Receiver能够收到扫描状态变化（開始扫描还是结束扫描）registerReceiver(new SearchReceiver(), new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_STARTED));registerReceiver(new SearchReceiver(), new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED));//调用startDiscovery()方法能够开启设备扫描。注冊该Receiver能够收到扫描到的设备//通过(BluetoothDevice) intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE)//能够获得扫描到的设备registerReceiver(new SearchDeviceReceiver(), new IntentFilter(BluetoothDevice.ACTION_FOUND));but.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View arg0) {if(bluetooth.setName(et.getText().toString())){Toast.makeText(getApplicationContext(), "设置成功", 1).show();}elseToast.makeText(getApplicationContext(), "设置失败", 1).show();}});//增加	<uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>权限//后能够直接使用enable()方法启动本机蓝牙适配器，而且能够改动蓝牙友好名称but2.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View arg0) {bluetooth.enable();}});//使用以下语句能够弹出对话框提示是否开启，onActivityResult()方法可获取用户选项but3.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View arg0) {startActivityForResult(new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE),1);}});but4.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View arg0) {if(bluetooth.isEnabled()){t1.setText("地址"+bluetooth.getAddress());t2.setText("名称"+bluetooth.getName());t3.setText("可见性"+bluetooth.getScanMode());}elseToast.makeText(getApplicationContext(), "蓝牙不可用", 1).show();}});//改动本机蓝牙可见时间but5.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View arg0) {Intent intent=new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);intent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 1200);startActivityForResult(intent, 2);}});but6.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View arg0) {if(bluetooth.isEnabled()){deList.clear();bluetooth.startDiscovery();}}});but7.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View arg0) {createServer();}});but8.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View arg0) {linktoServer();}});but9.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View arg0) {send();}});}private void linktoServer() {try {BluetoothDevice bluetoothDevice=deList.get(0);bluetoothDevice.getAddress();final BluetoothSocket bluetoothSocket=bluetoothDevice.createRfcommSocketToServiceRecord(UUID.fromString(uuid));new Thread(){@Overridepublic void run() {try {handler.sendEmptyMessage(-3);bluetoothSocket.connect();handler.sendEmptyMessage(-4);outputStream=bluetoothSocket.getOutputStream();getInfo(bluetoothSocket);} catch (Exception e) {e.printStackTrace();}};}.start();} catch (Exception e) {e.printStackTrace();}}//创建服务端。相似于Socket编程private void createServer()  {try {final BluetoothServerSocket btserver = bluetooth.listenUsingRfcommWithServiceRecord("server", UUID.fromString(uuid));new Thread(){@Overridepublic void run() {try {while(true){handler.sendEmptyMessage(-1);final BluetoothSocket serverSocket = btserver.accept();//堵塞式方法。需开线程handler.sendEmptyMessage(-2);outputStream=serverSocket.getOutputStream();new Thread(){//当有新连接时。交给新线程完毕public void run() {getInfo(serverSocket);};}.start();}} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}};}.start();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}private void send() {String ss=et.getText().toString().trim();try {BufferedWriter bw=new BufferedWriter(new OutputStreamWriter(outputStream));bw.write(ss);bw.newLine();//注意换行bw.flush();//刷新缓存Message msg=new Message();msg.obj=ss;msg.what=2;handler.sendMessage(msg);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}private void getInfo(BluetoothSocket serverSocket) {try {InputStream inputStream=serverSocket.getInputStream();BufferedReader br=new BufferedReader(new InputStreamReader(inputStream));while(true){String msg=br.readLine();Message msgs=new Message();msgs.obj=msg;msgs.what=1;handler.sendMessage(msgs);}} catch (IOException e) {}}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);if(requestCode==1&&resultCode==RESULT_OK){Toast.makeText(getApplicationContext(), "蓝牙已启用（onActivityResult）", 1).show();}if(requestCode==2&&resultCode!=RESULT_CANCELED){Toast.makeText(getApplicationContext(), "蓝牙可见时间已改动"+requestCode+"（onActivityResult）", 1).show();}}private class MyReceiver extends BroadcastReceiver{@Overridepublic void onReceive(Context arg0, Intent intent) {int state=intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, -1);if(state==BluetoothAdapter.STATE_TURNING_ON)Toast.makeText(getApplicationContext(), "蓝牙正在开启", 1).show();if(state==BluetoothAdapter.STATE_ON)Toast.makeText(getApplicationContext(), "蓝牙已经开启", 1).show();if(state==BluetoothAdapter.STATE_TURNING_OFF)Toast.makeText(getApplicationContext(), "蓝牙正在关闭", 1).show();if(state==BluetoothAdapter.STATE_OFF)Toast.makeText(getApplicationContext(), "蓝牙已关闭", 1).show();}}private class SearchReceiver extends BroadcastReceiver{@Overridepublic void onReceive(Context arg0, Intent intent) {if(BluetoothAdapter.ACTION_DISCOVERY_STARTED.equals(intent.getAction())){Toast.makeText(getApplicationContext(), "启动发现。。。", 1).show();}if(BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(intent.getAction())){Toast.makeText(getApplicationContext(), "发现结束。。。", 1).show();}}}private class SearchDeviceReceiver extends BroadcastReceiver{@Overridepublic void onReceive(Context arg0, Intent intent) {et.append(intent.getStringExtra(BluetoothDevice.EXTRA_NAME)+"\n");Toast.makeText(getApplicationContext(), intent.getStringExtra(BluetoothDevice.EXTRA_NAME), 1).show();try{deList.add((BluetoothDevice) intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE));Toast.makeText(getApplicationContext(), "发现设备", 1).show();}catch(Exception e){}}}}

布局文件例如以下

<pre name="code" class="html"><ScrollView xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="match_parent"android:orientation="vertical"><TextViewandroid:id="@+id/t1"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="t1" /><TextViewandroid:id="@+id/t2"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="t2" /><TextViewandroid:id="@+id/t3"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="t3" /><EditTextandroid:id="@+id/et"android:layout_width="fill_parent"android:layout_height="wrap_content"/><Buttonandroid:id="@+id/but"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="设置名称" /><Buttonandroid:id="@+id/but2"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="自己主动开启" /><Buttonandroid:id="@+id/but3"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="提示开启" /><Buttonandroid:id="@+id/but4"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="获取信息" /><Buttonandroid:id="@+id/but5"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="改动可见性" /><Buttonandroid:id="@+id/but6"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="查找设备" /><Buttonandroid:id="@+id/but7"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="创建服务端" /><Buttonandroid:id="@+id/but8"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="连接到服务端" /><Buttonandroid:id="@+id/but9"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="发送" /></LinearLayout></ScrollView>

manifest文件

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"package="com.example.bluetoothtest"android:versionCode="1"android:versionName="1.0" ><uses-sdkandroid:minSdkVersion="8"android:targetSdkVersion="18" /><applicationandroid:allowBackup="true"android:icon="@drawable/ic_launcher"android:label="@string/app_name"android:theme="@style/AppTheme" ><activityandroid:name="com.example.bluetoothtest.MainActivity"android:label="@string/app_name" ><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter></activity></application><uses-permission android:name="android.permission.BLUETOOTH"/><uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/></manifest>

注意：安卓手机A，安卓手机B都要安装这款软件，并都点击 提示开启（或自己主动开启），接着安卓手机A点击 改动可见性 并点击 创建服务端 ，安卓手机B点击查找设备。若找到的第一个设备为安卓手机A，B手机点击 链接到服务端 。等提示 已经连接 后就能够在文本框中输入文字，然后点击 发送 了请安装到手机上使用！project下载地址 http://pan.baidu.com/s/1eQ3nc3o