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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
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原文地址:http://www.cnblogs.com/gcczhongduan/p/5131444.html