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UUID
	Handler handler=new Handler(){
		@Override
		public 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();
			}
		}
	};
	@Override
	protected 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() {
			@Override
			public void onClick(View arg0) {
				if(bluetooth.setName(et.getText().toString())){
					Toast.makeText(getApplicationContext(), "设置成功", 1).show();
				}else
					Toast.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() {
			@Override
			public 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() {
			@Override
			public void onClick(View arg0) {
				startActivityForResult(new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE),1);
			}
		});
		but4.setOnClickListener(new View.OnClickListener() {
			@Override
			public 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());
				}else
					Toast.makeText(getApplicationContext(), "蓝牙不可用", 1).show();	
			}
		});
		//改动本机蓝牙可见时间
		but5.setOnClickListener(new View.OnClickListener() {
			@Override
			public 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() {
			@Override
			public void onClick(View arg0) {
				if(bluetooth.isEnabled()){
					deList.clear();
					bluetooth.startDiscovery();
				}
			}
		});
		but7.setOnClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View arg0) {
				createServer();
			}

		});
		
		but8.setOnClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View arg0) {
				linktoServer();
			}

		});
		
		but9.setOnClickListener(new View.OnClickListener() {
			@Override
			public 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(){
				@Override
				public 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(){
				@Override
				public 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 block
						e.printStackTrace();
					}
					
				};
			}.start();
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.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 block
			e.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) {
		}
	}
	@Override
	protected 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{

		@Override
		public 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{
		
		@Override
		public 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{
		
		@Override
		public 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"
	
	 >
<LinearLayout 
     android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:orientation="vertical"
    >
    <TextView
        android:id="@+id/t1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="t1" />

    <TextView
        android:id="@+id/t2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="t2" />

    <TextView
        android:id="@+id/t3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="t3" />

    <EditText 
         android:id="@+id/et"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        />
    <Button
        android:id="@+id/but"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="设置名称" />

    <Button
        android:id="@+id/but2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="自己主动开启" />

    <Button
        android:id="@+id/but3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="提示开启" />

    <Button
        android:id="@+id/but4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="获取信息" />

    <Button
        android:id="@+id/but5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="改动可见性" />

    <Button
        android:id="@+id/but6"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="查找设备" />

    <Button
        android:id="@+id/but7"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="创建服务端" />

    <Button
        android:id="@+id/but8"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="连接到服务端" />
    <Button
        android: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-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="18" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android: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>

请安装到手机上使用！

project下载地址   http://pan.baidu.com/s/1eQ3nc3o