蓝牙通讯APP源码，控制

package com.test.BTClient; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.util.UUID; import com.test.BTClient.DeviceListActivity; import android.app.Activity; import android.app.AlertDialog; import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothDevice; import android.bluetooth.BluetoothSocket; import android.content.DialogInterface; import android.content.Intent; import android.os.Bundle; import android.os.Environment; import android.os.Handler; import android.os.Message; import android.view.LayoutInflater; //import android.view.Menu; //如使用菜单加入此三包 //import android.view.MenuInflater; //import android.view.MenuItem; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.ScrollView; import android.widget.TextView; import android.widget.Toast; public class BTClient extends Activity { private final static int REQUEST_CONNECT_DEVICE = 1; //宏定义查询设备句柄 private final static String MY_UUID = "00001101-0000-1000-8000-00805F9B34FB"; //SPP服务UUID号 private InputStream is; //输入流，用来接收蓝牙数据 //private TextView text0; //提示栏解句柄 private EditText edit0; //发送数据输入句柄 private TextView dis; //接收数据显示句柄 private ScrollView sv; //翻页句柄 private String smsg = ""; //显示用数据缓存 private String fmsg = ""; //保存用数据缓存 public String filename=""; //用来保存存储的文件名 BluetoothDevice _device = null; //蓝牙设备 BluetoothSocket _socket = null; //蓝牙通信socket boolean _discoveryFinished = false; boolean bRun = true; boolean bThread = false; private BluetoothAdapter _bluetooth = BluetoothAdapter.getDefaultAdapter(); //获取本地蓝牙适配器，即蓝牙设备 /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); //设置画面为主画面 main.xml //text0 = (TextView)findViewById(R.id.Text0); //得到提示栏句柄 edit0 = (EditText)findViewById(R.id.Edit0); //得到输入框句柄 sv = (ScrollView)findViewById(R.id.ScrollView01); //得到翻页句柄 dis = (TextView) findViewById(R.id.in); //得到数据显示句柄 //如果打开本地蓝牙设备不成功，提示信息，结束程序 if (_bluetooth == null){ Toast.makeText(this, "无法打开手机蓝牙，请确认手机是否有蓝牙功能！", Toast.LENGTH_LONG).show(); finish(); return; } // 设置设备可以被搜索 new Thread(){ public void run(){ if(_bluetooth.isEnabled()==false){ _bluetooth.enable(); } } }.start(); } //发送按键响应 public void onSendButtonClicked(View v){ int i=0; int n=0; try{ OutputStream os = _socket.getOutputStream(); //蓝牙连接输出流 byte[] bos = edit0.getText().toString().getBytes(); for(i=0;i<bos.length;i++){ if(bos[i]==0x0a)n++; } byte[] bos_new = new byte[bos.length+n]; n=0; for(i=0;i<bos.length;i++){ //手机中换行为0a,将其改为0d 0a后再发送 if(bos[i]==0x0a){ bos_new[n]=0x0d; n++; bos_new[n]=0x0a; }else{ bos_new[n]=bos[i]; } n++; } os.write(bos_new); }catch(IOException e){ } } //接收活动结果，响应startActivityForResult() public void onActivityResult(int requestCode, int resultCode, Intent data) { switch(requestCode){ case REQUEST_CONNECT_DEVICE: //连接结果，由DeviceListActivity设置返回 // 响应返回结果 if (resultCode == Activity.RESULT_OK) { //连接成功，由DeviceListActivity设置返回 // MAC地址，由DeviceListActivity设置返回 String address = data.getExtras() .getString(DeviceListActivity.EXTRA_DEVICE_ADDRESS); // 得到蓝牙设备句柄 _device = _bluetooth.getRemoteDevice(address); // 用服务号得到socket try{ _socket = _device.createRfcommSocketToServiceRecord(UUID.fromString(MY_UUID)); }catch(IOException e){ Toast.makeText(this, "连接失败！", Toast.LENGTH_SHORT).show(); } //连接socket Button btn = (Button) findViewById(R.id.Button03); try{ _socket.connect(); Toast.makeText(this, "连接"+_device.getName()+"成功！", Toast.LENGTH_SHORT).show(); btn.setText("断开"); }catch(IOException e){ try{ Toast.makeText(this, "连接失败！", Toast.LENGTH_SHORT).show(); _socket.close(); _socket = null; }catch(IOException ee){ Toast.makeText(this, "连接失败！", Toast.LENGTH_SHORT).show(); } return; } //打开接收线程 try{ is = _socket.getInputStream(); //得到蓝牙数据输入流 }catch(IOException e){ Toast.makeText(this, "接收数据失败！", Toast.LENGTH_SHORT).show(); return; } if(bThread==false){ ReadThread.start(); bThread=true; }else{ bRun = true; } } break; default:break; } } //接收数据线程 Thread ReadThread=new Thread(){ public void run(){ int num = 0; byte[] buffer = new byte[1024]; byte[] buffer_new = new byte[1024]; int i = 0; int n = 0; bRun = true; //接收线程 while(true){ try{ while(is.available()==0){ while(bRun == false){} } while(true){ num = is.read(buffer); //读入数据 n=0; String s0 = new String(buffer,0,num); fmsg+=s0; //保存收到数据 for(i=0;i<num;i++){ if((buffer[i] == 0x0d)&&(buffer[i+1]==0x0a)){ buffer_new[n] = 0x0a; i++; }else{ buffer_new[n] = buffer[i]; } n++; } String s = new String(buffer_new,0,n); smsg+=s; //写入接收缓存 if(is.available()==0)break; //短时间没有数据才跳出进行显示 } //发送显示消息，进行显示刷新 handler.sendMessage(handler.obtainMessage()); }catch(IOException e){ } } } }; //消息处理队列 Handler handler= new Handler(){ public void handleMessage(Message msg){ super.handleMessage(msg); dis.setText(smsg); //显示数据 sv.scrollTo(0,dis.getMeasuredHeight()); //跳至数据最后一页 } }; //关闭程序掉用处理部分 public void onDestroy(){ super.onDestroy(); if(_socket!=null) //关闭连接socket try{ _socket.close(); }catch(IOException e){} // _bluetooth.disable(); //关闭蓝牙服务 } //菜单处理部分 /* @Override public boolean onCreateOptionsMenu(Menu menu) {//建立菜单 MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.option_menu, menu); return true; }*/ /* @Override public boolean onOptionsItemSelected(MenuItem item) { //菜单响应函数 switch (item.getItemId()) { case R.id.scan: if(_bluetooth.isEnabled()==false){ Toast.makeText(this, "Open BT......", Toast.LENGTH_LONG).show(); return true; } // Launch the DeviceListActivity to see devices and do scan Intent